I used to love this add-on but for the past few weeks, clicking its Send Later button immediately crashes Thunderbird, losing any new message being written and any edits to a draft that has been re-opened. (I can still run Send Later from the File menu.) I'm running 32bit Thunderbird 60.3.1 on 64bit Win 10 PRO Version 1709. - Phil@PhilOlenick.com
You'd think the person who made the Send Later add-on would have included a simple button to invoke the features. Can't for the life of me understand such a blatant oversight. Anyway, this add-on does exactly what's needed. Works as advertised. It invokes the send later options.
I use the Send Later feature in combination with BlunderDelay and MagicSLR (now "Get/Send-Button (minimized MagicSLR)") to make message sending run in the background with the compose window closed. "Get/Send-Button (minimized MagicSLR)" seems to have lost its Send Later button, as that button vanished from Thunderbird recently.
This add-on replaces that add-on perfectly for the sole purpose for which I originally installed it (that other add-on seems to do something else now). Send Later Button does the single thing I wanted, and with the same icon, too!
This review is for a previous version of the add-on (1.1).