I am using Gmail gem to connect to user's Gmail account and search emails:
gmail = Gmail.connect('user', 'pass')
results = gmail.inbox.search(:subject => 'insert_keyword_here')
This returns only the items in Inbox (labeled with Inbox), not the ones in "All Mail" (also known as "archived email").
How can I search "All Mail", not just Inbox?
Perhaps a bit late to the party, but it could be useful for someone for sure...
If you need to get language-agnostic, you should pick the folder using one of the tags. Here's how to find "all mail" folder:
mailbox_all_mail = imap.list('', '*').find{|mb| mb.attr.include?(:All)}
And then select
(or examine
) its name:
imap.examine(mailbox_all_mail.name)
That should do the trick.