[GH-ISSUE #1351] Gmail classifies Bitwarden RS emails as spam #920

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opened 2026-03-03 02:04:41 +03:00 by kerem · 1 comment

kerem commented

2026-03-03 02:04:41 +03:00

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Originally created by @FractalBoy on GitHub (Feb 3, 2021).
Original GitHub issue: https://github.com/dani-garcia/vaultwarden/issues/1351

I've configured SPF, DKIM, DMARC, and set up a PTR record and I've managed to get my mail-tester.org score up to 9.5. However, there are things that mail-tester is finding that I cannot address.

This is from a test email, so it may or may not apply to other forms of emails.

Score	Name	Description	Advice
-0.724	MPART_ALT_DIFF	HTML and text parts are different	Make sure your TEXT version looks similar as the text inserted in your HTML version
-0.01	T_REMOTE_IMAGE	Message contains an external image

In addition to these, it lists "Your message does not contain a List-Unsubscribe header"

Is there anything we can do about this? At the very least, we can probably fix the text version, which looks to still be HTML. This might be causing most of the issue.

<html>
<p>
This is a test email to verify the SMTP configuration for <a href="<redacted>"><redacted></a>.
</p>
<p>When you can read this email it is probably configured correctly.</p>
</html>

Originally created by @FractalBoy on GitHub (Feb 3, 2021). Original GitHub issue: https://github.com/dani-garcia/vaultwarden/issues/1351 I've configured SPF, DKIM, DMARC, and set up a PTR record and I've managed to get my mail-tester.org score up to 9.5. However, there are things that mail-tester is finding that I cannot address. This is from a test email, so it may or may not apply to other forms of emails. |Score | Name | Description | Advice | |-------|--------|--------------|--------| |-0.724 | MPART_ALT_DIFF | HTML and text parts are different | Make sure your TEXT version looks similar as the text inserted in your HTML version| |-0.01 | T_REMOTE_IMAGE | Message contains an external image| In addition to these, it lists "Your message does not contain a List-Unsubscribe header" Is there anything we can do about this? At the very least, we can probably fix the text version, which looks to still be HTML. This might be causing most of the issue. ``` <html> <p> This is a test email to verify the SMTP configuration for <a href="<redacted>"><redacted></a>. </p> <p>When you can read this email it is probably configured correctly.</p> </html> ```

kerem closed this issue

2026-03-03 02:04:41 +03:00

kerem commented

2026-03-03 02:04:42 +03:00

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@BlackDex commented on GitHub (Feb 3, 2021):

It looks like you are not using the latest version of bitwarden_rs, or you have custom mail templates, because the message regarding similar text is fixed already. Also i did a test just a few days ago and i got a 10/10.

And i receive my mails also on Gmail, and the never ends up in the spam anymore.

@BlackDex commented on GitHub (Feb 3, 2021): It looks like you are not using the latest version of bitwarden_rs, or you have custom mail templates, because the message regarding similar text is fixed already. Also i did a test just a few days ago and i got a 10/10. And i receive my mails also on Gmail, and the never ends up in the spam anymore.