What is the limit to the number of emails I can send and receive using the email service provided?

and also what is the max amount of space allocated for each email?

The email accounts have a limit of 10 MB of disk space each. There is a limit to the number of emails you can send, but the exact limits are confidential. All I can say is that it’s high enough for regular email sending, but don’t try to use it for bulk mailing.