Postmark for WordPress: Approval, Message Streams, and Why It Is Strict
Postmark has the best transactional delivery reputation in the category, and it keeps it by being strict. Two rules catch WordPress users out.
The NimblyMail Blog
WordPress email, explained.
Field guides on deliverability, SPF/DKIM/DMARC authentication, SMTP providers, and fixing WordPress email for good — written by the team that builds the plugin.
Email Providers
Brevo for WordPress: How to Tell If Your Domain Is Actually Authenticated
There is a one-glance test for whether Brevo is sending as you or on behalf of you, and it is visible in any received…
Email Providers
SendGrid for WordPress: The Sender Verification Trap
SendGrid offers two ways to verify who you are. The quick one gets you sending in minutes and quietly leaves your mail failing DMARC.
Deliverability
How to Run an Email Deliverability Audit on a WordPress Site
A repeatable audit across six areas, what a pass and a failure look like in each, and how to stop the result decaying the…
Deliverability
Email Deliverability Tools: What Each One Actually Tells You
Deliverability tools measure different things and disagree with each other for good reasons. Here is what each category actually checks, and which question each…
Email Providers
How to Send WordPress Email With Resend
Resend is the simplest transactional provider to set up, and the one most likely to be configured in a way that quietly fails DMARC.…
Deliverability
SPF PermError: Why Adding More Providers Breaks Your Email
An SPF record can be perfectly written and still fail every check. The ten-lookup limit breaks mail while the record looks correct, and DMARC…
Email Providers
Amazon SES for WordPress: The Region Trap That Breaks Most Setups
SES is cheap and reliable, and its most common failure has one cause: sandbox status, verified identities and production access are all per-region.
Deliverability
You Installed an SMTP Plugin and Email Still Goes to Spam. Now What?
Every guide ends where your problem starts. This one begins on the assumption that SMTP is already working and mail is still being filtered.
Email Providers
Gmail SMTP Keeps Breaking After 7 Days: The invalid_grant Error Explained
If your Gmail connection works for exactly a week and then dies, the cause is not your WordPress site. It is one dropdown in…