Well, I'm still getting notified when someone adds or comments on this forum, hence my reply here! However, the notifications of activity are now few and far between.
Unfortunately, I agree with you that the occurances of the problem are NOT few and far between and the only way to lessen them is to use as little "special" formatting as possible. (You know, that "special" formatting that EVERY ONE uses now as second nature in most every other platform or program!)
But, alas (like that word!), Apple is silent.
When you think about it, really does seem odd since I'll bet it is somewhat of an easy fix, at least for their "genius'" (NOT) ...... at least not at the moment.
So, to Apple, I say, ask, plead nicely ........ come on ...... can't someone look at the this and fix it for us loyal, though downtrodden, customers? Please?
So 4 years after the first posting on this productivity issue with Mac Mail which has clearly been reported repeatedly to Apple, Apple has done ….absolutely nothing. Determined to replicate the Microsoft experience of dumbed down apps, utterly frustrating user experience and a couldn't give a toss attitude towards customer feedback - Apple is racing to the bottom. As I have replaced Notes with an App that actually syncs reliably, and iPhoto with an app that isn't continually dumbed down I will replace MacMail with the best alternative.
How hard is it to sort a cut and paste glitch out in an email app? Exactly.
A nearly converted to Windows Apple Power User
I too have a bug with my Mac mail. Slightly different to yours but as annoying just the same.
Follow this thread Typing problem occurring as soon as I delete something in a composing email
My work around is the same as yours, pre write the email in TextEdit, then copy paste into an email. Very tedious, but its my only solution for now.