DropMyEmail – Backup eMail Automatically
https://www.dropmyemail.com/

Dropmyemail is a free service that lets you backup your emails automatically easily. Dropmyemail was founded in 2011 by John Fearon, an Internet entrepeneur who needed a way to backup his emails.
Dropmyemail is just getting started and will be bringing more great features soon. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.