Email delivery : SpamAssassin does not like that

Hello,
SpamAssassin is noticing that our email do have these problems:

1. HTML-only message, but there is no HTML tag => add the tag
2. Message only has text/html MIME parts => add the text/plain message
3. lacks brackets and HTML only => add the brackets

How can we add that?
Thank you

Hello Babynus,
The easier way is to reproduce the test.
That is how I proceeded:
- go to mail-tester.com
- use the email address to create a new ProjeQtor user and ressource.
- send the welcome email
check the score.

The problem is for my team which is located on different places using different mail services: I am trying to optimize the email deliverability to be sure that they get notified when needed.

Thanks for your answer
Kitcat711

Hello,

Thanks for trying the tester.
I am working on the DKIM settings too, my message was only related to the SpamAssassin part of the penalty.
For, so far, this is why the emails are blocked when notifying my team.

Any chance to improve that part - the minus 1.7 score?

Kitcat711