Continuing the discussion from Emails are not threaded in Outlook 2013:
I’m seeing the my iPhone will thread emails I get from Meta, however my Mac OS Laptops won’t. The Mail.app in 10.8 and 10.9 fail to pick up on the relation.
In looking at the headers of messages, I see
In-Reply-To: <email@example.com> References: <firstname.lastname@example.org>
and I wonder… could the
/ be throwing off the threading? How could I test it with headers showing:
In-Reply-To: <email@example.com> References: <firstname.lastname@example.org>
Has that been tried already?
One way to solve this is to put a
Re: at the start of every email, but it’s a bit awkward when the first post is “re” I don’t know if a conditional "Re: " could be added…