[MlMt] Inline images have "attachment" disposition and this may cause problems with ProtonMail

[Benny Kjær Nielsen]

On 24 Feb 2025, at 13:06, Oli Sturm via mailmate wrote:

> And I wonder why MailMate doesn’t use inline where it seems to make very good sense to do so.

If there's a good reason then I've forgotten it. Originally, MailMate did not support inline images at all and it would require a bit of work to actually keep track of whether an image is inline or not.

> I’m no RFC guru in these areas, so I may well be completely wrong here… but is there any chance there could be an MM bug here, or at least a situation where an option may be provided in case it helps compatibility?

I think “bug” is a fair definition even though MailMate never behaved differently. I've noted to look into if it's easily fixed.

(I also think what you describe for ProtonMail sounds like bugs, but that goes for all rewriting of outgoing emails. Outgoing emails should only be altered by adding transmission related headers at the top.)

-- 
Benny
https://freron.com/support