PHP Mail Send Limit?

We sent an email message generated with a php script out to our members, but only some received the message. I thought the limit was 200 per hour, but maybe it was only 40? Would this count as a single message even though each was generated with specific user info?

FTP/shell accounts (sending using scripts via PHP/CGI, etc.): 200 recipients per hour

  • Max recipients per single message: 40

Also, does anyone know if there is a way to see who received the message at this point and who didn’t?

Thanks for any suggestions!