by demfilz 0 (0 reviews)

Demfilz SMTP Mailer

Name: Demfilz SMTP Mailer
Author: demfilz

Microsoft 365, Google or any SMTP service for WordPress email, with bounce capture and a suppression list so dead addresses are never emailed twice.

Demfilz SMTP Mailer ranks #72,909 among WordPress.org plugins with 0+ active installations, is #2,868 of 3,634 in the Communication category, and was last updated Sep 14, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v1.1.0 Current Version v1.1.0

Updated 1 month ago Last Update on 14 Sep, 2026

Refreshed 2 days ago Last Refreshed on

#2,868 of 3,634 in Communication

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Rank

#72,909

— No change

Active Installs

-100%

KW Avg Position

143

1.5 worse

Downloads

171

+1 today

Support Resolved

— No change

Rating

Review 0 out of 5

0 (0 reviews)

Next Milestone 10

Total Progress 0%

0+ 10+

45,341

Ranks to Climb

Growth Needed

8,000,000

Active Installs

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Current #72,909

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

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Plugin Details

Version: 1.1.0
Last Updated: Sep 14, 2026
Requires WP: 5.8+
Tested Up To: 7.1.4
PHP Version: 7.4 or higher
Author: demfilz

Support & Rating

Rating: ☆ ☆ ☆ ☆ ☆ 0
Reviews: 0
Support Threads: 0
Resolved: 0%

Keywords

deliverability email email log mailer smtp

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Frequently Asked Questions

Common questions about Demfilz SMTP Mailer

Two ways. The sending services (SendGrid, Mailgun, Brevo, Postmark, Resend) post delivery events to a webhook address the plugin gives you, protected by a long secret. Microsoft and Google do not post events, so if you allow it the plugin reads the delivery reports that arrive in the connected mailbox every fifteen minutes and parses the standard delivery status part inside them. Either way the matching log entry is marked Bounced with the reason.

Hard bounces and spam complaints, when those options are on, plus anything you add by hand. Open Mail > Suppression list to search it, download it, or remove an address, after which it can be emailed again. Temporary problems such as a full mailbox are noted on the log entry but never suppress anyone.

The permission it asks for (Mail.Read or gmail.readonly) allows reading the mailbox, so technically yes, which is why it is off by default and a separate switch. The plugin only lists recent messages from postmaster or mailer-daemon addresses or with an Undeliverable style subject, fetches only those, and stores only the failed address and the reason. With Microsoft application permissions you can additionally scope the application to one mailbox with an application access policy.

No. If you already have a Microsoft 365 or Google Workspace mailbox, that is enough, and it is usually the best choice because the mailbox already passes the checks inboxes make. Sending services are worth it for high volume or when you want detailed delivery reporting.

Yes. The Microsoft, Google, SendGrid, Mailgun, Brevo, Postmark and Resend mailers all send over HTTPS, so a blocked port 587 or 465 does not stop them.

The from address does not match the mailbox you connected. The plugin rewrites the from address to the connected mailbox automatically and moves the original into reply to, so make sure the mailbox setting is filled in. With application permissions, check that the application access policy covers that mailbox.

Encrypted in the database, using a key derived from the salts in your wp-config.php file, so a stolen database dump alone does not hand them over. You can also define any setting as a constant in wp-config.php, in which case nothing is stored at all.

Yes, and that is the default. Bodies are only stored if you tick the option, because password reset links and customer details would otherwise sit in your database.

No. Entries older than the retention period, thirty days out of the box, are deleted daily. You can also empty the log by hand at any time.

It is recorded with the exact error, queued, and tried again in the background, up to the number of attempts you set. If you have a backup mailer, the message is handed to it immediately instead. A notice appears in the dashboard either way.