is there any way to increase message count for Send or receive through Exchange Online?
currently as i know:
Send 30 mails/minute
No, the limits cannot be increased. You can only decrease the recipient limit: https://office365itpros.com/2020/01/17/custom-recipient-limits-exchange-online-mailboxes/
Thank you @Vasil Michev for update. I wanted to confirm to one of my clients that no increase in this policy as he is trying to use exchange service as a notification system with high load.