Rated 5 out of 5 stars

I use Simple Mail all the time to clean the waste e-mails from my server while leaving key messages intact. It vacuums up the mess after I'm done. As of Firefox v57 this wonderful extension no longer works, but it mattered enough to me that I've backed off from v57 to v56.0.2.

Had ceased working in FF45 - FIXED !!! Rated 5 out of 5 stars

THE NEW VERSION WORKS THANK YOU!
This is a text book example of why it's so important to support developers by contributing -- Simple Mail is so essential to Firefox that it's the kind of thing you wish was packaged with the program.
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I had posted this review:
I don't know if the culprit is v45 or the latest Java update (I did both in 1 afternoon) but NO version (even the most recent, available elsewhere) works now. Just sits there like a sleepy snail.

This review is for a previous version of the add-on (2.86.6.1-signed). 

FF45

Try this version: https://addons.mozilla.org/en-US/firefox/addon/simple-mail/versions/2.86.8

This has stopped working Rated 1 out of 5 stars

I loved this add-on. Now it doesn't work any more.

This review is for a previous version of the add-on (2.86.6.1-signed).