Notices without spam

Sending multiple notices at once can be considered as spam by SL. The "excessive" notices are silently discarded (SL reports the notice has been sent but notice is not delivered).

Delivery delay

To send notices is safe way, use the "delay between notices" option:

This option appears only if you select more than 3 groups.

It adds a small delay between groups, delivering the notice in safe way. 3 (or better 5) seconds delay is recommended.