
Q1630 Is there a maximum number of addressees that can appear in the AirMail “To” line?
A1630 No; however keep in mind that most folks use some sort of spam-filter on the receiving end, and most spam-filters are sensitive to messages with a bazillion "to" or "cc" addresses- lots of cc's is something often used by spam. So keeping the number of recipients down to a reasonable number per message will increase the chances of getting it through.