We're pleased to announce inbound processing for Paubox Email API. In other words, developers and AI agents can build automations triggered by inbound emails. This includes webhooks, attachments, and replies. 

 

Why was it built?

During a Paubox Table dinner in New York last month, a happy customer asked if we could build support for receiving email with Paubox Email API.

Customer feedback is part of Paubox Foundations, the core principles we care intensely about. In fact, Paubox came into being after I had lunch with a customer in Hawaii. With this in mind, I knew this was a feature to build for Paubox Email API.

 

How does it work?

Assuming you've already followed the Paubox Email API Quickstart guide, the following instructions are for enabling inbound email processing:

  • Enable inbound email. A receiving domain is automatically provisioned as a subdomain of inbound.paubox.email (e.g. gentle-dolphin.inbound.paubox.email). A catch-all inbox handles mail to any address on the domain. Click here to enable inbound email. 

  • Receive email. Anyone can send to any address on your domain. Messages are stored and available via the API within seconds.

  • Retrieve messages. List, read, and download attachments through the API. Cursor-based pagination keeps large inboxes fast.

  • Get notified. Subscribe to the email.received webhook event to receive a POST to your endpoint each time an email arrives

See related: Receiving email - Paubox API Docs

 

How is encryption handled?

Inbound email must be sent using TLS 1.2 or 1.3 encryption. If no encrypted connection is offered, the message will not be accepted. If insecure protocols such as TLS 1.1, 1.0, SSL v2, or SSL v3 are used by the sender, the message will not be accepted. 

This security stance is in line with guidance from the NSA, which we adopted back in 2021. 

See related: Paubox eliminates obsolete TLS protocols, follows NSA guidance

 

How much does it cost?

Each received email counts towards your Paubox Email API usage tier.

See here for pricing.

 

Is it HIPAA compliant?

Yes, the business associate agreement (BAA) you receive for Paubox Email API covers inbound email processing. In other words, it's a HIPAA compliant email solution.