Screenshots.
The current build, in light and dark, with the sample mailbox Telex shows before you add an account. Open any of them full size.
Inbox
The main window: folders, message list and preview, with the sample mailbox.
Reply
R opens the reply right in the reading pane: plain text in a mono face, quoted with a Polish header.
Quick filter
Press / and type. Senders and subjects match as you type, message text through full-text search: “wrzesien” finds “wrzesień”.
Blocked images
Remote images stay off until you load them, so a sender can’t tell when you opened the message.
Rule notes
When a rule moves a message, the message says which rule and why.
Comfortable
Compact is the default. One click on the toolbar gives every row more room.
Account
Adding an account: IMAP and SMTP in one dialog. Telex logs in to both before it saves anything.