I use Claws Mail. It's simple, quick, uses the MH mailbox format which is human readable and where each email message has its own separate file, and it can go o

I use Claws Mail. It's simple, quick, uses the MH mailbox format which is human readable and where each email message has its own separate file, and it can go over inboxes several gigabytes in size without a hiccup. https://www.claws-mail.org https://www.claws-mail.org