The limit on the amount of people you can send an email to, and the amount of emails a single address can send in one minute, on our new plans depend on the hosting package you have. They are:
Innovator plan – maximum of 100 emails per minute, 1000 per hour, 5,000 per day
Pro plan – maximum of 100 emails per minute, 1,000 per hour, 10,000 per day
The maximum number of recipients on a single email is the same as the amount of emails you can send per minute. That would be 100 on either plan.