If you delete the first message that is supposed to go out then no messages will ever go out to new subscribers.

How to duplicate:

1. Add 5 messages to account. Set the messages for 2 days.
2. Delete first message.

Now the message at message_cycle 0 has send_days=2. People who now get added to the autoresponder will never receive any messages.

This is with the older version. I have not tried to duplicate the error with the new version.

--Paul