Please see option 12 "Work with communication"
My guees is that you have set a high prioritoy for the e-mail line - and
that the Spool file has a low priority on the accualt job description of the
file.

You are aware that the fax lines that be set to hold different priorities
depending on the time of the day. You will for example only alow high
priority fax to be sent in the normal working hours while all priorityis are
allowed in the night time.

Send SND-PTY-WAIT (send priority wait ) is normally the status of a low
priority fax in queue - wating for the priority to change.

The prioriy handling was devloped for fax as it was related to the fax
expenses but it dosn't really make sense for email as cost are the same.

The priority control for the email is used differently.
You can use Priority to check if the recipinent have received the email. An
email stating, "Email opened" will be returned to the email address of the
sender if the recipient opens an email, that is sent as "High priority"  

Priority 1, 2 & 3 = High
Priority 4, 5 & 6 = Normal
Priority 7, 8 & 9 = Low