This will become useful if a user "replies by chat" from an email(gmail provides this option) to the sender of the email if he is online. It will be set to the subject of the email conversation.
-- GitLab Migration Automatic Message --
This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/telepathy/telepathy-gabble/issues/146.