The email composer (CKEditor 5) inserts a new paragraph block (<p>) by default when the enter key is pressed, causing a large spacing between lines on outgoing emails, which looks like this when received:

However in the editor, we cannot see the extra spacing, it just appears as a normal line break:

The best solution for my use case is to just change the action of the enter key to insert a normal line break (<br>) however the ability to do this through the CKEditor configuration was removed in the latest version. Pressing shift+enter does insert the expected line break but this is not ideal for my environment. I know I should also raise this with the SOGo community but i’m interested to see if anyone here has experience with this.