When using Gmail on Apple's mail, the conversations/threads are not being grouped properly when the subject field of the messages starts having many prefixes "RES" in the subject.
Some email clients (e.g. Mail in iPad), adds a "RE:" or "RES:" prefix every time when a message is replied. This, causes some subject fields having something like: "RES: RES: RES: RES: Original Subject".
When this situation happens, the conversations in Mail.app apparently break, that is, one email (or more) that should be grouped to a conversation is displayed as a different conversation.
This is an example that causes problem for me:
- I send a message with subject "Test"
- I receive a reply with subject (sent from other email client) "RES: Test"
- I reply again (using Mail), then the subject becomes: "Re: RES: Test"
- I receive a reply with subject (sent from other email client), and the subject now comes as: "RES: RES: Test"
At this point, I've got 3 different conversations where this should be grouped as one. If I open Gmail, the conversation works perfectly, but in Mail it doesn't. Is there anything I can do about it?
Using Mail.app 6.5