Hi all,

I'm been struggling with this issue for the past couple of days. The core issue is that some of the odoo emails go straight to the gmail spam box.

My setup:

• Odoo:18 community edition, running on Hetzner VPS with docker (odoo:18 image)
• 0 Customization or 3rd part addons. This is stock odoo:18
• Reverse proxy + Cloudflare DNS, odoo is running at odoo.naviq.com
• emails are sent from xxx@naviq.com
• Using transaction email services for SMTP outgoing emails. Tried with
• • Amazon SES
  • ZeptoMail
  • Postmark
• DNS configured correctly for SPF, DKIM, DMARC
• naviq.com is not on any blacklists https://mxtoolbox.com/SuperTool.aspx?action=a%3anaviq.com&run=toolpage#
• I have a google workspace setup on naviq.com with multiple email accounts. We've been using them for the past year without issue.

The test procedure:

I'm creating a contact using various test emails addresses. Using some from gmass.co, and some personal accounts.

I then send a quotation with 1 product. It always goes to SPAM. However if i send a message instead. It delivers correctly.

In gmail, the emails shows that the SPF, DKIM, and DMARC all PASS. If i mark the quote as not spam, the following emails are delivered correctly.

I've repeated this with mail different emails, and the behavior is consistent.

Everything is pointing to an issue with the email content. But if that was the case i'd expect other people to be having similar issues. The email templates are stock odoo:18. No changes.

As a final test I used the google workspace email account as the SMTP outgoing server. And even there is fails.

I'm at my witts end. Does anyone have any insights in whats going on? I can send anyone an odoo quote so you can see it in action, if it helps.

Thanks!