How to enhance the mail communication in outlook to maximum users ?

Copper Contributor
Hi All,
In my office outlook,we need to send communication for mass no of users across organisation .Curently at one go ,i can send communication to maximum 500users at a time keeping them all in can i increase that limit!beacuse every time i need to communicate to 10k users ,so i have to send them in 20 different communication..Please help in this regards!
2 Replies



Seem there is TWO issues you encountered:


  1. Outlook restricts user to send more than 10K Email in a 24-hour period
  2. User mailbox restricts the number of Email address put in "To", "cc" and "Bcc" field to 500

For [1], may required a 3rd party such as SendGrid

For [2], please consider DL (Distribution List)


Create a (maybe dynamic) distribution list and send to it.