On Sat, Jul 29, 2023 at 12:07:37PM +0200, Sébastien Hinderer wrote:
I believe that more integrated solutions like Thunderbird do have such scheduled deferred sending features...
Thunderbird does have that (called "send later"), but can only send when it's running, so is probably not what you want.
Thunderbird hands off outgoing messages to an MTA, like other mail readers. It stores messages to be sent later in Local Folders / Outbox.
