So I just set up Alpine for my multiple Gmail accounts with this guide. It works perfectly. (I first tried setting up mutt, but it was a huge pain, and confusing as well.)
Oh, and I also installed mpd and ncmpcpp . I really like ncmpcpp — it’s so easy to learn with the built-in help system. I like having a simple music player client, without all the cover/album art features that most people care about these days. And the memory footprint of mpd + ncmcpp is very, very, very low. Just the way I like it!