Дополнения

Send Later от Jonathan Kamens, Jonathan Perry-Houts

“Send Later” - планировщик времени отправки сообщений электронной почты.

Примечание подборщика This add-on changes the behavior of the Write window's "file / send later" menu; instead of just putting the message in the outbox, it allows the user to schedule exactly when to send the message. It does not require the "Send Later Button" add-on. It does require Thunderbird to be left running at the time the mail is to be sent. Setting "Check every # minutes" too high makes it send mail up to that much later than requested.