Pricing is based on the number of emails you send. Our free plan includes 3,000 emails, with additional emails charged on a pay as you go basis at a rate of $1.00/1,000. Our cost-effective Premium plan is available for up to 2,500,000 emails/month, with additional emails charged at decremental rates starting at $0.90/1,000. If you need more than 2,500,000 emails, you can talk to us about a custom Enterprise plan.