I have started moving away from gmail and have started exporting my older e-mails via the takeout option. This generates .mbox files. I don't really use any e-mail clients on my computer and do most of my e-mailing on my phone, so I don't have a way of viewing/searching those files.

Therefore I was wondering if there is any selfhosted option for some kind of e-mail archive/viewer with decent search function that anyone can recommend? Specifically something capable of handling those .mbox files. I found a few projects that sounded promising, but they seemed either dead, weren't setup for selfhosting or could only connect directly to the mailboxes. So I thought I'd ask here if anyone has experience with this, maybe some recommendations?

Also open to alternative approaches what to do with those files. I just would like to delete these mails from gmail entirely, but that requires I can search them with as much ease as I can on gmail with a local option.

Thanks!