We have an on-prem implementation where multiple emails get generated based on Application registrations using crm workflows and are sent out using a noreply Exchange Online Mailbox. In the past few days there were 30000+ applications generated and corresponding emails were being sent out at 10000 emails per 24 hour limit with loads others being stuck in Pending Send.

I would like to ask if there a way to increase this limit or an app that can be used for this scenario.