This group is for announcements and discussion about the Send Later Thunderbird add-on, which allows email messages to be scheduled for delivery at a specific time in the future.
You can download the add-on here
It's probably a good idea to review the user guide
before posting a question here!
You can support future development
and maintenance of Send Later by donating to Extended Thunder
Inc., the non-profit charitable organization which supports Send
Later. Donations to Extended Thunder are tax-deductible in the
United States as permitted by law. You can donate via Liberapay
(recurring) or PayPal