By default, you can connect the following number of email accounts based on your subscription:
Please note that this quota is counted at the team level: it's the total number of email accounts that team members can connect to in Campaigns.
It is also possible to add additional email accounts to your current plan without having to upgrade. To learn more about this, visit our pricing page:
How to connect email accounts
Email accounts can be connected in the Email Accounts section:
The supported accounts are:
Microsoft 365 Business