Not sure whether to use SMTP port 587 or 465 for your WordPress emails? This guide breaks down the difference between the two ports, explains how each one handles encryption, and helps you pick the right one for your email setup.
Are you getting the “SMTP Error: Could not connect to SMTP host. Failed to connect to server” message? This error pops up when WordPress tries to connect to your SMTP server but can’t complete the handshake.
Usually, it’s triggered by incorrect server settings, a firewall blocking the connection, or your host restricting certain ports. Whatever the cause, the result is the same, your emails stop going out!
So, in this guide, I’ll walk you through exactly how to diagnose and fix SMTP server connection issues. You’ll learn what causes the error, how to troubleshoot it step by step, and how to set up a failsafe so you never lose emails again.
Most small business owners spend hours on emails that could send themselves. This guide walks you through every level of email automation — from making sure your transactional emails actually get delivered, to setting up welcome sequences and triggered campaigns, all the way to using AI tools that can write and send emails on your behalf.
WordPress email spoofing happens when emails appear to come from your domain but lack proper authentication, causing delivery failures and security risks.
Your contact forms might be setting visitors’ email addresses as the sender, your server could be sending unauthenticated mail, or your domain simply lacks the DNS records that prove legitimate ownership.
This creates two main problems: your legitimate emails get blocked or marked as spam, and malicious actors can more easily impersonate your domain to send fraudulent messages.
In this guide, we’ll fix these spoofing issues by setting up WP Mail SMTP with proper authentication, configuring your DNS records with SPF, DKIM, and DMARC, and ensuring your contact forms handle sender addresses correctly.
Use your favorite SMTP provider to reliably send your WordPress emails.
SMTP fixes most WordPress email problems, but not all of them.
Some email failures come from basic WordPress settings that work against your SMTP configuration – admin emails pointing to dead addresses, site URLs from old staging environments, user permissions blocking notifications.
This guide shows you what to check beyond your SMTP setup.
Card testing fraud attacks generate thousands of emails in hours, creating sudden volume spikes that damage your sender reputation. Discover the hidden connection between payment form security and email deliverability, and learn practical steps to protect your WordPress site from both fraud and email delivery issues.