[tde-users] WAS: Seamonkey Mail's tiny text~~ NOW: The dangers of .mbox mail clients?

I am needing a "refresher course" on mail clients that use the .mbox format to store emails. It's been years since I've used this kind of mail client. Is there any "dangers" I need to know about? Like, keeping the mailbox a certain size? or a certain amount of emails per folder etc? The last client I used, before I went FULL TIME LINUX, was Eudora 7.1 on Windows 10. And you had to keep the .mbx files TINY TINY TINY or else, you'd face corruption. I always go offline, and then compact my folders after I get done reading emails. Right now my "2024 Archives" folder is at: Number Of Messages: 4776 Size: 300 MB ============================================================