MimeTypeGuesser::guess() is deprecated, D10 compatibility

Please help with ✨ Improve image detection Needs work

I understand that this issue should be fixed together with ✨ Improve image detection Needs work .
But that issue is not solved since months. So mimemail causes PHP fatal errors on Drupal 10.0 and 10.1 while it pretends to be compatible to Drupal ^10.
Therefore, I suggest to fix that fatal error first.

So help solve that issue. Part of the problem is that there is not sufficient testing, which is why that other issue needs to be fixed and which is why a band-aid like you propose is not a sustainable solution for this module going forward.

@mkalkbrenner
Thanks a lot for the band-aid in comment #4, it helps going forward while the other issue is worked on!

@TR
I'll have a look at that other issue to see if I can help.

@TR
I understand that you want it clean with the testing and all but Drupal 9 is not supported anymore and we really need a functional D10 version of this module. It has been more than 8 months and no work has been done on the other issue #3155325: Improve image detection...

So I am asking if it would it be possible to release a D10 version even if the band-aid solution is not ideal please?

I totally agree with @LeDucDuBleuet

I re-open this issue to help others, because Drupal 9 reached EOL.
I also set the priority back to Critical, because mails aren't sent.

Can you tell me if this issue will soon be included in the release?

I can confirm that sending emails with an attachment provided in #attachments fails if this patch is not present with Drupal 10.2.2 / PHP 8.2 / Mimemail 8.x-1.0-alpha6.

This patch has been tested successfully for more than 6 months now on many websites, I can confirm it is RTBC.

@TR
It has been more than a year now, while not ideal, could we have a new release including this patch please?

Thank you very much.