Hello, I am using Thunderbird 60.7.0 on Windows 10. When I send an email from Thunderbird, Thunderbird applies a fixed line length, adding a "return" in the middle of sentences. This started happening sometime after May 15th, and I don't know how or why this option got turned on. Messages that I sent from Thunderbird after May 15th, have a "return" in the middle of nearly every sentence. This is visible when I view the sent message in my phone's email client (and then copy and paste the message into a text editor that shows the line number on the left). This is also visible when I view the sent message in the desktop browser version of Gmail (and then copy and paste the message into a text editor on Windows). However, the interesting thing is, when I view the same messages in Thunderbird (and then copy and paste them into a text editor), they have *no* returns in the middle of sentences. So it appears that these messages will appear fragmented for only some users? I do not know how or why this fixed-length option got turned on, and I would like to turn it off, so that my emails do not appear fragmented for any recipients. Could someone help me in finding how to turn this setting off? Thank you, Michael Murrin