Recipient limitation to send AIP protected email

shashidhar joliholi Hello that's not necessarily a prompt because of the protected content (at least as far as I know) so more likely depending on subscription and associated recipient limit (these can also be customized). As it states, try using user groups instead to avoid hitting the limit.

https://docs.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits#sending-limits