{"id":2412,"date":"2021-08-11T06:37:48","date_gmt":"2021-08-11T06:37:48","guid":{"rendered":"https:\/\/www.domainnamesanity.com\/blog\/?p=2412"},"modified":"2021-08-11T06:38:32","modified_gmt":"2021-08-11T06:38:32","slug":"what-two-protocols-are-used-to-deliver-mail-messages","status":"publish","type":"post","link":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/","title":{"rendered":"What two protocols are used to deliver mail messages?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2412\" class=\"elementor elementor-2412\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-230899b0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"230899b0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7ff48571\" data-id=\"7ff48571\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-48deb20 elementor-widget elementor-widget-text-editor\" data-id=\"48deb20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"breadcrumbs-bar\"><nav class=\"blog-breadcrumbs\">\n<ul>\n \t<li><a href=\"https:\/\/www.domainnamesanity.com\/\">HOME<\/a><\/li>\n \t<li class=\"bc-2nd\"><a href=\"https:\/\/www.domainnamesanity.com\/blog\/\">BLOG<\/a><\/li>\n<\/ul>\n<\/nav><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c29e94 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"1c29e94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What two protocols are used to deliver mail messages?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6ac49d elementor-widget elementor-widget-post-info\" data-id=\"d6ac49d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-d9c2fd9 elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-custom\">\n\t\t\t\t\t\t\t\t\t\tBy Douglas Moore\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-6a0ea6c elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t<span class=\"elementor-post-info__item-prefix\">Last Updated On<\/span>\n\t\t\t\t\t\t\t\t\t\tAugust 11, 2021\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f51764 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"8f51764\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"1920\" src=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg\" class=\"attachment-full size-full wp-image-1827\" alt=\"\" srcset=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg 2560w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-300x225.jpg 300w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-1024x768.jpg 1024w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-768x576.jpg 768w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-1536x1152.jpg 1536w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-2048x1536.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-43ea192 toc-top elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"43ea192\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-85705ab\" data-id=\"85705ab\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9f76f1c elementor-widget elementor-widget-text-editor\" data-id=\"9f76f1c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-197d5d2 elementor-widget elementor-widget-text-editor\" data-id=\"197d5d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Emailing today is such an easy task. Compose, hit send, and your message travels across oceans and borders to reach its recipient. It is such an easy task that people\u2019s attention starts to drown in their full inboxes, which are also littered by spammers, phishers and other members of the not-so-nice population of netizens.<\/p><p>This is on the surface. But how exactly is email delivered\u2014technically-speaking\u2014in the background? As with anything on the Internet, transferring (sending) &amp; delivering (receiving) is performed using protocols.<\/p><p>If you came here to find the answer to the CompTIA A+ Certification test regarding email protocols for delivering email, you are in the right place. The answer is: POP3 and IMAP.<\/p><h2>Email Protocols for Delivering Email: POP3 and IMAP<\/h2><p>As mentioned above, there are two protocols for delivering (i.e. receiving) emails. These are POP3 and IMAP. <a href=\"https:\/\/www.domainnamesanity.com\/blog\/imap-vs-pop3-email\/\">How do they compare<\/a>?<\/p><h3>POP3: What Is It, and What Are Its Default Ports<\/h3><p>POP3 is an abbreviation from <b>Post Office Protocol <\/b>version <b>3<\/b>. It is an older email delivering protocol that is supported virtually on any email server or client (i.e. on your desktop or mobile email app).<\/p><p>POP3 is a protocol implemented from the Internet&#8217;s earlier days (1988), so by its nature is simpler and decentralized. However, it has some shortcomings that are addressed by IMAP (see below).<\/p><p>For example, it defaults to downloading messages to the user&#8217;s local client and deleting them from the server, in order to save space on the server itself. Of course, today one can select whether they prefer to keep messages on the server anyway. Before its extension (for example, with APOP), it didn\u2019t support encrypted and secure authentication, but only plaintext password that could easily be intercepted and abused.\u00a0<\/p><p>POP3 also doesn\u2019t support folders, hence keeps all messages within the root inbox folder. In contrast to IMAP, it cannot download parts of a message while ignoring other parts, such as the header, the body, or attachments. It has to download the whole message instead.\u00a0<\/p><p>Finally, POP3 doesn\u2019t support multiple clients connected to a server simultaneously. So, for example, you cannot simultaneously connect with your desktop and mobile clients, but have to use one to download messages (after which they are typically removed from the server and the other clients cannot reach them anymore).<\/p><p>The default ports for POP3 are:<\/p><ul><li aria-level=\"1\">Port 110 \u2014\u00a0 default POP3 unencrypted port<\/li><li aria-level=\"1\">Port 995 \u2014\u00a0 an extended port for secure and encrypted communication<\/li><\/ul><h3>IMAP4: What Is It, and What Are Its Default Ports<\/h3><p>Although <a href=\"https:\/\/whatismyipaddress.com\/imap\">IMAP4<\/a> was originally published almost simultaneously with POP3, it continued to develop and has resulted in a more robust email protocol solution.\u00a0<\/p><p>IMAP4 is an abbreviation of <b>Internet Message Access Protocol <\/b>version <b>4<\/b>, draft of which was published in 1993.\u00a0<\/p><p>It addresses many shortcomings that come from POP3, which is what it was designed to achieve.\u00a0<\/p><p>For example, IMAP defaults to only downloading a copy of a message, while keeping the original on the server. IMAP also enables downloading just parts of a message separately: the header, the body, the attachments. This facilitates searching and bandwidth optimization, since one can choose to skip downloading large attachments when over a metered or otherwise limited connection. Another traffic optimization feature is enabling server-side searches. What this does is it enables clients to ask for the server itself to perform a search and provide the results, which avoids the need to download all messages on the client\u2019s side in order to perform a successful search.<\/p><p>IMAP also enables encrypted and secure communication by default, with secure key &amp; password exchange. It supports multiple mailboxes, which are seen as folders from the user\u2019s side. Multiple clients can connect to the client simultaneously and download messages, since they are not deleted from the server upon download. And finally, IMAP supports flags, such as <b>read<\/b>, <b>replied<\/b>, <b>important<\/b>, and others, which help in sorting and searching.<\/p><p>IMAP\u2019s default ports are:<\/p><ul><li aria-level=\"1\"><b>Port 143<\/b> \u2014 default IMAP unencrypted port<\/li><\/ul><ul><li aria-level=\"1\"><b>Port 993 <\/b>\u2014 port for secure and encrypted communication<\/li><\/ul><h2>Email Protocol for Sending Email: SMTP<\/h2><p>As there are email protocols for delivering email, there\u2019s one which is predominantly used for sending. That one is SMTP.<\/p><h3>SMTP: What Is It, and What Are Its Default Ports<\/h3><p>SMTP comes from <b>Simple Mail Transfer Protocol<\/b>. It is one of the oldest Internet protocols, introduced as early as 1981. However, SMTP is going strong even today since it does the job of sending and transmitting emails fairly simply and efficiently. Of course, SMTP was upgraded and extended many times over the years (for example, with the <b>Extended SMTP<\/b>), allowing for the modern way of sending emails.<\/p><p>As should be clear enough, SMTP is used only for sending email. There are some \u2018pulling\u2019 capabilities inbuilt in SMTP, but these apply only for email or email-hop servers, not for end-points (e.g. email clients).<\/p><p>SMTP directs email to the final delivering server, not to the user\u2019s mailbox. Once the email finds its way to the server, the user downloads the message with its client(s). This protocol is focused on message transport, not message content. Thus, it defines the mail envelope, but not the email header nor the message body. For the latter, email transmission technology uses the <b>Multipurpose Internet Mail Extensions <\/b>(MIME) standard.<\/p><p>SMTP\u2019s default ports are:<\/p><ul><li aria-level=\"1\"><b>Port 25 <\/b>\u2014 the default, unencrypted port<\/li><\/ul><ul><li aria-level=\"1\"><b>Port 2525<\/b> \u2014 an alternative port opened on SiteGround servers, when port 25 is blocked<\/li><\/ul><ul><li aria-level=\"1\"><b>Port 465<\/b> \u2014 the port for secure and encrypted communication<\/li><\/ul><h2>In Conclusion: Delivering Email Through POP3 and IMAP<\/h2><p>We use email everyday to communicate over the Internet in a granular fashion that doesn\u2019t require real-time connection between end-points (sender and recipient). We can send our email, and it will reach its recipient when they are able to connect and download it.<\/p><p>To be able to achieve this, there are several standardized protocols for transferring and delivering emails. POP3 and IMAP are those used for delivering i.e. for receiving emails by the recipient. IMAP is more advanced and more facilitative of how modern email work is performed.<\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-02d9db7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"02d9db7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e3db840\" data-id=\"e3db840\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-60a6169 article-end elementor-widget elementor-widget-spacer\" data-id=\"60a6169\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-565995e elementor-widget elementor-widget-heading\" data-id=\"565995e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">View Related Articles<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21bb133 elementor-widget elementor-widget-spacer\" data-id=\"21bb133\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-404e6d4 elementor-posts__hover-none elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-card-shadow-yes elementor-widget elementor-widget-posts\" data-id=\"404e6d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cards_masonry&quot;:&quot;yes&quot;,&quot;cards_columns&quot;:&quot;3&quot;,&quot;cards_columns_tablet&quot;:&quot;2&quot;,&quot;cards_columns_mobile&quot;:&quot;1&quot;,&quot;cards_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.cards\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-cards elementor-grid\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-2545 post type-post status-publish format-standard has-post-thumbnail hentry category-fixing-errors\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.domainnamesanity.com\/blog\/why-are-my-emails-going-to-spam\/\" >\n\t\t\t<div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"640\" height=\"640\" src=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-1024x1024.jpg\" class=\"attachment-large size-large wp-image-2546\" alt=\"\" srcset=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-1024x1024.jpg 1024w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-300x300.jpg 300w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-150x150.jpg 150w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-768x768.jpg 768w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-1536x1536.jpg 1536w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/spam-email-2048x2048.jpg 2048w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h6 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.domainnamesanity.com\/blog\/why-are-my-emails-going-to-spam\/\" >\n\t\t\t\tWhy Are My Emails Going to Spam?\t\t\t<\/a>\n\t\t<\/h6>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>There is no experience more frustrating than having your emails end up in the spam folder of your recipients rather than their inboxes. If you\u2019ve found that your emails are going to spam instead of your subscribers\u2019 inboxes, keep reading to find out why.<\/p>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-2525 post type-post status-publish format-standard has-post-thumbnail hentry category-fixing-errors\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.domainnamesanity.com\/blog\/how-to-become-tech-savvy\/\" >\n\t\t\t<div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"640\" height=\"518\" src=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/tech-savvy-person-1024x828.jpg\" class=\"attachment-large size-large wp-image-2523\" alt=\"\" srcset=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/tech-savvy-person-1024x828.jpg 1024w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/tech-savvy-person-300x243.jpg 300w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/tech-savvy-person-768x621.jpg 768w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/tech-savvy-person-1536x1243.jpg 1536w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2023\/07\/tech-savvy-person-2048x1657.jpg 2048w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h6 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.domainnamesanity.com\/blog\/how-to-become-tech-savvy\/\" >\n\t\t\t\tHow to Become Tech Savvy\t\t\t<\/a>\n\t\t<\/h6>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>In a world where technology shapes our society and everyday life, knowing how to operate a computer and other common tech gadgets becomes a survival skill. <\/p>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-2412 post type-post status-publish format-standard has-post-thumbnail hentry category-fixing-errors\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/\" >\n\t\t\t<div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-1024x768.jpg\" class=\"attachment-large size-large wp-image-1827\" alt=\"\" srcset=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-1024x768.jpg 1024w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-300x225.jpg 300w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-768x576.jpg 768w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-1536x1152.jpg 1536w, https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-2048x1536.jpg 2048w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/div>\n\t\t<\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h6 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/\" >\n\t\t\t\tWhat two protocols are used to deliver mail messages?\t\t\t<\/a>\n\t\t<\/h6>\n\t\t\t\t<div class=\"elementor-post__excerpt\">\n\t\t\t<p>Emailing today is such an easy task. Compose, hit send, and your message travels across oceans and borders to reach its recipient. It is such an easy task that people\u2019s attention starts to drown in their full inboxes, which are also littered by spammers, phishers and other members of the not-so-nice population of netizens.<\/p>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b4fddc elementor-widget elementor-widget-spacer\" data-id=\"0b4fddc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Emailing today is such an easy task. Compose, hit send, and your message travels across oceans and borders to reach its recipient. It is such an easy task that people\u2019s attention starts to drown in their full inboxes, which are also littered by spammers, phishers and other members of the not-so-nice population of netizens.<\/p>\n","protected":false},"author":1,"featured_media":1827,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2412","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fixing-errors"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What two protocols are used to deliver mail messages? - Domain Name Sanity Blog<\/title>\n<meta name=\"description\" content=\"For everything on the Internet, transferring (sending) &amp; delivering (receiving) is performed using protocols. Let&#039;s look at email protocols.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What two protocols are used to deliver mail messages? - Domain Name Sanity Blog\" \/>\n<meta property=\"og:description\" content=\"For everything on the Internet, transferring (sending) &amp; delivering (receiving) is performed using protocols. Let&#039;s look at email protocols.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/\" \/>\n<meta property=\"og:site_name\" content=\"Domain Name Sanity Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-08-11T06:37:48+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-08-11T06:38:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1920\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Domain Name Sanity\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Domain Name Sanity\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/\"},\"author\":{\"name\":\"Domain Name Sanity\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/#\\\/schema\\\/person\\\/9b0b37ae15e106ba4e72a5ec2db0cf4e\"},\"headline\":\"What two protocols are used to deliver mail messages?\",\"datePublished\":\"2021-08-11T06:37:48+00:00\",\"dateModified\":\"2021-08-11T06:38:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/\"},\"wordCount\":1021,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/catch-all-email-scaled.jpg\",\"articleSection\":[\"Fixing Errors\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/\",\"url\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/\",\"name\":\"What two protocols are used to deliver mail messages? - Domain Name Sanity Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/catch-all-email-scaled.jpg\",\"datePublished\":\"2021-08-11T06:37:48+00:00\",\"dateModified\":\"2021-08-11T06:38:32+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/#\\\/schema\\\/person\\\/9b0b37ae15e106ba4e72a5ec2db0cf4e\"},\"description\":\"For everything on the Internet, transferring (sending) & delivering (receiving) is performed using protocols. Let's look at email protocols.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/catch-all-email-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/catch-all-email-scaled.jpg\",\"width\":2560,\"height\":1920},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/what-two-protocols-are-used-to-deliver-mail-messages\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What two protocols are used to deliver mail messages?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/\",\"name\":\"Domain Name Sanity Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.domainnamesanity.com\\\/blog\\\/#\\\/schema\\\/person\\\/9b0b37ae15e106ba4e72a5ec2db0cf4e\",\"name\":\"Domain Name Sanity\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/76585e5a8b8873461b624adb0a20fe0785967f5389e70b6a3bbf5de67bb45209?s=96&d=retro&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/76585e5a8b8873461b624adb0a20fe0785967f5389e70b6a3bbf5de67bb45209?s=96&d=retro&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/76585e5a8b8873461b624adb0a20fe0785967f5389e70b6a3bbf5de67bb45209?s=96&d=retro&r=g\",\"caption\":\"Domain Name Sanity\"},\"sameAs\":[\"https:\\\/\\\/www.domainnamesanity.com\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What two protocols are used to deliver mail messages? - Domain Name Sanity Blog","description":"For everything on the Internet, transferring (sending) & delivering (receiving) is performed using protocols. Let's look at email protocols.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/","og_locale":"en_US","og_type":"article","og_title":"What two protocols are used to deliver mail messages? - Domain Name Sanity Blog","og_description":"For everything on the Internet, transferring (sending) & delivering (receiving) is performed using protocols. Let's look at email protocols.","og_url":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/","og_site_name":"Domain Name Sanity Blog","article_published_time":"2021-08-11T06:37:48+00:00","article_modified_time":"2021-08-11T06:38:32+00:00","og_image":[{"width":2560,"height":1920,"url":"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg","type":"image\/jpeg"}],"author":"Domain Name Sanity","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Domain Name Sanity","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#article","isPartOf":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/"},"author":{"name":"Domain Name Sanity","@id":"https:\/\/www.domainnamesanity.com\/blog\/#\/schema\/person\/9b0b37ae15e106ba4e72a5ec2db0cf4e"},"headline":"What two protocols are used to deliver mail messages?","datePublished":"2021-08-11T06:37:48+00:00","dateModified":"2021-08-11T06:38:32+00:00","mainEntityOfPage":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/"},"wordCount":1021,"commentCount":0,"image":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#primaryimage"},"thumbnailUrl":"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg","articleSection":["Fixing Errors"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/","url":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/","name":"What two protocols are used to deliver mail messages? - Domain Name Sanity Blog","isPartOf":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#primaryimage"},"image":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#primaryimage"},"thumbnailUrl":"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg","datePublished":"2021-08-11T06:37:48+00:00","dateModified":"2021-08-11T06:38:32+00:00","author":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/#\/schema\/person\/9b0b37ae15e106ba4e72a5ec2db0cf4e"},"description":"For everything on the Internet, transferring (sending) & delivering (receiving) is performed using protocols. Let's look at email protocols.","breadcrumb":{"@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#primaryimage","url":"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg","contentUrl":"https:\/\/www.domainnamesanity.com\/blog\/wp-content\/uploads\/2020\/07\/catch-all-email-scaled.jpg","width":2560,"height":1920},{"@type":"BreadcrumbList","@id":"https:\/\/www.domainnamesanity.com\/blog\/what-two-protocols-are-used-to-deliver-mail-messages\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.domainnamesanity.com\/blog\/"},{"@type":"ListItem","position":2,"name":"What two protocols are used to deliver mail messages?"}]},{"@type":"WebSite","@id":"https:\/\/www.domainnamesanity.com\/blog\/#website","url":"https:\/\/www.domainnamesanity.com\/blog\/","name":"Domain Name Sanity Blog","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.domainnamesanity.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.domainnamesanity.com\/blog\/#\/schema\/person\/9b0b37ae15e106ba4e72a5ec2db0cf4e","name":"Domain Name Sanity","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/76585e5a8b8873461b624adb0a20fe0785967f5389e70b6a3bbf5de67bb45209?s=96&d=retro&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/76585e5a8b8873461b624adb0a20fe0785967f5389e70b6a3bbf5de67bb45209?s=96&d=retro&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/76585e5a8b8873461b624adb0a20fe0785967f5389e70b6a3bbf5de67bb45209?s=96&d=retro&r=g","caption":"Domain Name Sanity"},"sameAs":["https:\/\/www.domainnamesanity.com"]}]}},"_links":{"self":[{"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/posts\/2412","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/comments?post=2412"}],"version-history":[{"count":4,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/posts\/2412\/revisions"}],"predecessor-version":[{"id":2416,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/posts\/2412\/revisions\/2416"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/media\/1827"}],"wp:attachment":[{"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/media?parent=2412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/categories?post=2412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.domainnamesanity.com\/blog\/wp-json\/wp\/v2\/tags?post=2412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}