How to create a channel dedicated to a specific sender?
You might want to create a dedicated channel for a specific sender(s) ( e.g. #co-jane-doe stemming from #contact) so your conversations won't be lost in the crowd of other messages from different people.
You can do so, by clicking Move to a new channel in the All actions menu under emails.
If you can't access this option, ask your admin to authorize it by activating Enable ‘Move to new channel’ action in the Settings Interface.