Hi DrByte, thanks for the reply.

I was not aware that sending an attachment would increase the risk of being blacklisted, and i dont think there would be that many sent. Its a request from a client so i will advise him on this matter.

The "business problem" isnt so much a problem, rather an attempt to "streamline" a process by attaching a direct debit mandate to the welcome email.

Any suggestions would be great, many thanks! :)