[Mailer] Embedding images support custom cid #18817
Merged
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Fix #17703
It was complicated to me to understand well PR and use case, as it's very specific and can be considered as a bugfix, but it's was e feature.
Example of use case:
We send an Email with
Parts
and html with cid (human friendly name is replaced by generated cid). We want to forward this email, so we keep the same html (with generated cid) andParts
are rebuild with generated cid (setContentId).Now it works (cid are kept), but before it was ko