WP Mail SMTP Blog

How to Test Email Deliverability (Step-by-Step Guide)

Your emails say they’re sending. The logs look clean, the success message pops up, and everything seems fine. Then a customer asks why they never got their password reset, and you realize your mail has been quietly landing in spam for weeks.

Testing your deliverability turns that guesswork into a clear score you can act on.

Here’s the full process, step by step. Run a spam score test, check your SPF, DKIM, and DMARC records, send a real test from WordPress, and read an inbox placement report.

Banner illustrating email protocols IMAP, POP3, and SMTP with a central server graphic and user icons on the left and right.

IMAP vs POP3 vs SMTP: The Differences Explained

SMTP, IMAP, and POP3 are easy to confuse, but the distinction is simple: SMTP sends your email, while IMAP and POP3 receive it. Learn how all three protocols work, which ports they use, and what it means for the emails your website sends.

Mailjet Review 2026: Is It the Right Email Service for Your WordPress Site?

Mailjet is an all-in-one email platform built for both transactional and marketing emails, and it’s quickly become a go-to choice for WordPress users who want reliable delivery without juggling multiple tools.

But is it actually worth using for your site? In this Mailjet review, I break down everything that matters: pricing, deliverability, ease of setup, and standout features like real-time team collaboration, automation, and email validation.

Banner for a guide: 'How to Avoid the Gmail Promotions Tab' with a cartoon bird on blue background, a hand reaching an envelope with a notification badge, and a PRO TIP tag.

How to Avoid the Gmail Promotions Tab (11 Proven Methods)

Gmail’s Promotions tab is one of the most overlooked deliverability problems for site owners. Order confirmations, password resets, and contact form notifications get filtered there more often than most people realize, and customers miss them.

The good news is that this is fixable. This guide covers 11 proven methods to get your emails into the Primary inbox, plus the testing tools you can use to confirm your changes are working.

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WordPress Emails Send But Not Arriving? Full Troubleshooting Guide

WordPress Emails Sent But Not Arriving? A Complete Troubleshooting Guide

Your WordPress site says the email sent. No errors, no failures, the log shows green. But the recipient never got it.

This isn’t a sending problem, it’s a delivery problem, and the fix depends on where the email actually died. Walk through the diagnostic process: confirm what happened, decode the bounce, check authentication and reputation, and rule out the WordPress-specific quirks that break delivery.

MailerSend Review: Is It Worth It for WordPress?

MailerSend Review 2026: Is It Worth It for WordPress?

MailerSend is a transactional email service built by the MailerLite team, and it’s quickly become one of the more popular mailer choices for WordPress sites.

But is it the right pick for you? In this MailerSend review, I cover everything you need to decide on: pricing, deliverability performance, and standout features like email verification and real-time activity logs.

I’ll also show you how to connect it to WordPress using WP Mail SMTP in under 12 minutes.

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