Is there a way to get Apple Mail to display the reply indicator on a message that was replied to via the Gmail Web UI? It's set up to use IMAP, and when I reply to a message using an iPhone the reply indicator shows up in Apple Mail (and vice versa)... but when I reply via the Web UI, Apple Mail never displays the reply indicator. Is there some tweak or hack to enable this?
The only indication to the problem that I can find is in Reply status doesn't show up in Apple Mail, dating from one year ago :
This is also supported by the recent blog of Notes on GMail’s IMAP support.
This seems to indicate that the problem is in Gmail itself not correctly acting as an IMAP client, rather than in Apple mail.
If that's the case, then no tweak or hack will enable this indicator, until Gmail improves its handling of IMAP flags. Or you can still use the Gmail account, but through a standards-compliant client program such as Apple mail.