Apparently I'm not the only one who randomly selects text as they read. My colleagues complained about this issue too.
Mozilla Thunderbird uses an odd max line length of 999 + CRLF: 1001 characters. When using DKIM preprocessing, this can result in DKIM validation failure.
postfix thunderbird dkim workaround
How do you reply to a mailing list post when you do not have the mail in your INBOX? With Thunderbird it is easy enough, as long as you know how.
mail thunderbird maillist