{"version":"1.0","provider_name":"Tendency","provider_url":"https:\/\/tendency.ltd\/it","author_name":"Katio L.","author_url":"https:\/\/tendency.ltd\/it\/author\/katio\/","title":"Understanding SMTP: The Backbone of Reliable Email Delivery","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"YU3zBGN8HH\"><a href=\"https:\/\/tendency.ltd\/it\/understanding-smtp-the-backbone-of-reliable-email-delivery\/\">Understanding SMTP: The Backbone of Reliable Email Delivery<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/tendency.ltd\/it\/understanding-smtp-the-backbone-of-reliable-email-delivery\/embed\/#?secret=YU3zBGN8HH\" width=\"600\" height=\"338\" title=\"&#8220;Understanding SMTP: The Backbone of Reliable Email Delivery&#8221; &#8212; Tendency\" data-secret=\"YU3zBGN8HH\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/tendency.ltd\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/tendency.ltd\/wp-content\/uploads\/2025\/11\/Tendency_1_2025-11-07_17-54-18_921.png","thumbnail_width":1200,"thumbnail_height":630,"description":"Table of Contents What is SMTP? SMTP vs. IMAP vs. POP3: What\u2019s the Difference? What is an SMTP Server? Popular SMTP Server Providers How Does an SMTP Server Work? SMTP Server FAQ What is SMTP? SMTP, or Simple Mail Transfer Protocol, is a set of rules that governs the sending and delivery of email messages [&hellip;]"}