How many email messages can I send per day?
Your email account includes 250 SMTP relays per mailbox, per day. Each address listed in the CC and BCC fields count against your daily limit. One relay consists of an email message sent to one address using the SMTP service. Therefore, you can send up to 250 messages per day, per mailbox. Your SMTP relay limit resets as 1:00 A.M., Arizona time. If you need more than 250 relays for your mailbox, you can purchase additional relay packs (in packs of 50).
The SMTP relay service is provided to you as a feature of your email account. This service is not set up by default. You must set up the service when you configure your email account settings.