> On Sat, Dec 10, 2022 at 02:57:42AM -0500, pa...@quillandmouse.com > wrote: > > You don't want to do this. Consider an MUA which stores your mail in > > "mbox" format-- one email right after another in one file. The > > delimiter is a line which starts at the left margin with the word > > "From". > > Technically, it's the 5-character sequence "From " (including the > space) that matters in mbox formats. If you begin a line with > "Fromage", or "From:", or even "From" followed by a tab, it won't > need to be escaped/armored.
There also has to be a blank line before it (unless it's the first five letters in a mailbox) so effectively it has to be the start of a paragraph that starts with 'From'. (and then has a particular address format after it. :)
