I like that mail meter can scan all of my emails in one place rather than having to go through each account separately (as with other archivers).
Also it's not expensive so you don't have as much risk if something goes wrong at some point down stream when your email is archived or searched! It does take time depending upon how big/complex an archive mailbox might be but this isn’t too bad once set up correctly - especially since we just use our own domain names instead using 3rd party providers which would incur additional fees per month anyway!! We are able store thousands more files then previously possible without running out storage space due cost etc issues before now.