As your mail provider. Most have limits.

Signature
Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
> what is the maximum number of recipients you can send to
> with a single email? I have over 7,000 contacts to email
> and have divided them into groups of 250.
>
> thanks for the listening