@matthew after a very long "terminal-only" streak and using solely #mutt for my emails, I can say that I've been VERY happy with claws-mail (probably the funniest-sounding client out there).
In my opinion, it strikes truly the right balance between usability and lightweightness. Plain-text email (cuts the fluff away) with viewing of images built in, plugins for pretty much anything, including RSS feeds, etc. The setup is also super easy, through a wizard much like Thunderbird. Once set, you can copy the saved dotfiles and carry them over to other installs, too, allowing quick redeployment.
Claws itself is a fork of an older and even lighter client, #sylpheed, but I found that the latter does not work with all of my accounts. I encourage everyone to try it!
#Mozilla #Thunderbird me ha estado dando algunos problemas, ventana de emails que no se actualiza, y de vez en cuando, alto consumo de CPU.
Volviendo a las bases: claws-mail, un gestor de correo ligero que usé mucho tiempo hace años ya, y que siempre me dio bastante buenos resultados.
Ustedes: ¿qué cliente de email usan en GNU/Linux? 💬
Dear Fediverse,
#Sylpheed, the #mail client that I have been using for 2.5 decades has not seen an update in 2 years and the author has dropped of the edge of the world (I hope he is doing well).
So I am looking for a new mailclient for linux. My requirements are: lightweight, fast, can handle huge folders on imap (100k to 1M mails/folder) and does not require me to run a desktop environment.
Yes, that precludes thunderbird and evolution. Neither is lightweight nor fast.
I broke it and fix again. Turns out ~/Mail/ folder is a must. Somehow Sylpheed uses it for its needs 😅
I don’t like that it shows two mailboxes. Top one is empty, and I want to get rid of it. But I have no idea how.
#FreeBSD Desktop journey update from my side: I just installed #Sylpheed email client, and it works well, opens fast and has old school vibes that I like!.
Unfortunately, I messed up with it somehow, and now I have a Mailbox (MH) that I don't want to see, and I have no idea how to remove it...
I'm really enjoying https://sylpheed.sraoss.jp/en/ as an email client.
And I'm back...
https://www.thunderbird.net/en-US/thunderbird/91.0/releasenotes/
Thanks #Sylpheed and #aerc, but I just cannot be without Thunderbird 
Klaus Zimmermann 
Diego Córdoba 🇦🇷
frlan
Attila Kinali
Ein Philosophiker
Alexander Deplov 🇩🇪
Kaito
totoroot