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Sentvia is a managed email API designed for AI agents and the applications that power them. This page explains what Sentvia does, the core capabilities it exposes, and how to orient yourself across the rest of the documentation — whether you’re integrating for the first time or exploring a specific feature.

Quickstart

Create an inbox and send your first email in under five minutes.

Authentication

API keys, the base URL, and how requests are authenticated.

Receiving email

Get inbound mail and delivery events delivered to your endpoint.

API Reference

Every endpoint, request body, and response schema.

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What you can build

  • Support & sales agents that own a dedicated inbox, triage incoming mail automatically, and reply in-thread so conversations look native in any mail client.
  • Per-user inboxes — provision a fresh address for every customer, task, or workflow in a single API call, and delete it when the work is done.
  • Transactional senders — deliver invoices, receipts, and alerts with deliverability already handled: no SMTP configuration, no reputation management.
  • Anything that reads or writes email — without standing up SMTP or IMAP infrastructure, managing MX records, or worrying about shared-IP reputation.

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How it works

1

Create an inbox

POST /inboxes returns an address like support-bot@mail.sentvia.ai — live immediately on the shared domain, ready to send and receive. No DNS setup required.
2

Send & receive

Send with POST /messages. Inbound mail is parsed, threaded, and either POSTed to your webhook on the message.received event or available via GET /messages.
3

Stay in thread

Sentvia sets the correct In-Reply-To and References headers on every outbound reply, so conversations thread cleanly in Gmail, Outlook, and every other mail client.

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Deliverability, handled

Every Sentvia domain ships with SPF, DKIM, and DMARC already configured. Automatic bounce and complaint suppression keeps your sender reputation clean, and higher-tier plans include reputation isolation so traffic from one workspace can’t affect another. You focus on what the agent does; Sentvia keeps the mail landing in the inbox.
Base URL: https://sentvia-api-production.up.railway.app/v1. All requests are authenticated with a Bearer API key — see Authentication.