tl;dr: Is there any way to replicate e-mails in a POP3 account's sent folder to an IMAP account's sent folder?
I had wondered for a few months now why my two main e-mail accounts on my phone's Aqua Mail weren't synching with my desktop's Thunderbird. Turns out, although I was sure I had replaced them with IMAP accounts on my phone awhile back, nope, they were still POP3 there. Therefore I went and fixed that today and in the process realized I have a load of e-mails I've sent from my phone that I would like to have synched up. So I went to move the e-mails from the old POP3 sent folders to their respective IMAP sent folders, but no can do; it seems the option to move does not exist for POP, ony IMAP. I get it, but is there any way at all to at least duplicate those sent e-mails into the IMAP sent folders?