Paubox Email API is a cloud-based SMTP provider that acts as an email delivery engine, allowing you to send email without the cost and complexity of maintaining your own email servers. Paubox Email API manages the technical details of email delivery, like infrastructure scaling, ISP outreach, reputation monitoring, and real-time analytics.

Once you verify your account, you can send 300 emails a month at no charge. If you need to send more than that, you can easily upgrade to a paid plan.

Yes. If you want to use the Paubox Email API in conjunction with your Paubox Marketing account, you will need to purchase the plans separately. But once you sign up, you can use the same account to send via the Paubox Email API or through Paubox Marketing.

Every time you send one email to one recipient, it’s counted as one email for your Paubox Email API plan. This occurs whether the email is ultimately deferred or sent to spam by the inbox provider. Also note that emails you send via Paubox Marketing will be counted separately from any emails you send via the Paubox Email API.

If you send more emails than your plan allows within a given billing period, you will be charged a small overage fee on a per email basis. Any overage fees are added to a new invoice.

We require all of our customers to verify their accounts. This helps to safeguard your account and maintain deliverability for you and all of our customers.