I am not sure how to increase the limit but you can go through this article this is a detailed guide on the sending limits for connected emails accounts: Sending limits for connected email accounts
Let me know if you have any followup questions!
I am not sure how to increase the limit but you can go through this article this is a detailed guide on the sending limits for connected emails accounts: Sending limits for connected email accounts
Let me know if you have any followup questions!