When writing plain text email, I typically want (or sometimes need) to enforce a maximum line length/column width in my email to ensure it is easily readable. Most commonly this is 72-80 columns, but can occasionally vary to 100-120 columns. To my knowledge, Proton Mail doesn't provide a way to hard wrap lines in this manner. So I currently have to write these emails in a separate text editor which does hard wrap lines before copy-pasting it into Proton Mail.

This is obviously quite tedious, and it would be a lot easier if Proton Mail included this feature. Perhaps there could be a setting which sets the default column width at which lines would hard wrap. And options to adjust or enable/disable it when writing a particular plain text email.