Hi @stevygee1987,
Can you please update to 1.1.4 and tell us if that solve your issue?
Just tried with the new version, no luck unfortunately.
Can you give us all the steps so we can reproduce this issue on our hand?
Sure, here you go:
These are my provider settings, PHP mail is off and custom SMTP is active: https://www.dropbox.com/scl/fi/ggwuxnzfcmxx1dqkdcxxo/Screenshot-2026-01-09-at-13.52.56.jpg?rlkey=cp1pr6974yjynz3sdwfbtp7pt&dl=0
Sending a test mail within campaign (not working):
MailerPress > New campaign
name: test
Subject: January update
Select an existing list
-> Next
Select default template
-> Next
-> Create Campaign
-> Preview & Send
Sending mode: Test
Enter e-mail
-> Send a test
Result:
Success message is shown.
Mothing in PHP error logs, no e-mail in inbox/spam folder.
Sending a test mail within provider settings (working):
MailerPress > Settings > Providers
Custom SMTP > (three dots) > Send a test email
Enter e-mail
-> Send
Result:
Success message is shown.
Test e-mail promptly arrives in my inbox.
Thank you for your patience.
We have fixed a lot of things with our latest update version 1.2.1.
Do you still have the issue? If yes, is this a local setup or a live site? If live site, which webhosting are you using?
Hi Benjamin, I ran some tests on 1.4.0 today:
Sending a test campaign using PHP Mail works.
Using Custom SMTP, it doesn’t work. Again, when I send a test mail on the Integration settings screen, this provider does work. Just not in the test campaign screen.
This is on a live site, my web hosting provider is hetzner.com.
Can you confirm you have set the custom SMTP as “primary” ESP from the Settings?
Yes, it is the primary ESP and the only one that’s active.
Do you use merge tags in your email?
Yes I do, but I just tried using the empty e-mail template without any merge tags, and this test also fails.
Can you update to version 1.4.2 released today (free and pro) please?
No change, unfortunately. I’m using the free version.
We are not able to reproduce this issue on our side.
Would it be possible to have a video showing the bug and your settings please?
Hi, here is a screen recording showing the three test cases:
https://www.dropbox.com/scl/fi/7ptmg0wgm6kfc0vfw45ng/Screen-Recording-2026-02-23-at-15.32.07.mp4?rlkey=6zvsn3o0up47ebihkirwn4lrh&dl=0
Test mail on provider settings (Custom SMTP): Works
Test mail in campaign (Custom SMTP): Doesn’t work
Test mail in campaign (PHP): Works
Thanks for taking another look!
Hi,
we have tried again to reproduce the issue on a fresh install.
We have configured a Brevo SMTP with a real test email and a real sender to make sure your custom SMTP doesn’t block the test email.
Both tests, from the Campaign Preview and the SMTP settings have worked successfully.
We invite you to double check your SMPT logs to get more details about these tests.
