KLS Mail Backup for PC
With this program, you can backup:
Mozilla Thunderbird, Firefox and Seamonkey profilesPostbox profilesMicrosoft Edge and Google Chrome profilesThe Bat! Email Client profiles
Other features include: You can backup to your local and network drives in standard ZIP compression. Full and incremental backups are also possible along with flexible restore options. Visit its Home Page to read more and download it. It is free for personal use.