Communication · Integration

Mailazy

Add Mailazy to your product for your customers, and give your AI agents governed access to it.

Embed a Mailazy integration so your customers send transactional email from their own account and their own sending domain, so the message arrives as theirs rather than as yours. Each customer authorises their own Mailazy account, which means reputation, volume and delivery history stay with them, and a customer revoking access affects only their own connection. Sends are deduplicated per event, so a retry after a network failure does not mail the same person twice, and delivery events come back so your product can show whether a message actually arrived. fastn owns the credentials, retries and API upkeep, and the same connection serves your AI agents.

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In your product

Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.

Let each customer send transactional email from their own Mailazy account and sending domain, so messages come from them.

Send an email from a product event, deduplicated per event so a retry does not mail a user twice.

Read delivery events so your product can show whether a message was delivered, bounced or opened.

Keep sending scoped per tenant so one customer's volume and reputation stay their own.

For your AI agents

Governed, audited access for the agents you build, through the MCP server.

An agent drafts and sends a transactional message within scoped permissions, with the send attributed and audited.

An agent checks whether a specific message was delivered or bounced before it escalates to a human.

An agent explains why a customer's email is failing by reading their own delivery events.

Example prompt

Did this invoice email reach the customer, and if it bounced, why?

Set up Mailazy in 4 steps

  1. 01Enable the Mailazy connector in your fastn dashboard.
  2. 02Have each customer connect their own Mailazy account and verify their sending domain.
  3. 03Map the templates and product events that trigger a send, per customer.
  4. 04Call it from your product and expose the same connection to your agents through the MCP gateway.

Why teams use the Mailazy integration

What you get by embedding it with fastn instead of building it yourself.

  • Ship a Mailazy integration without building it. Your customers connect their own Mailazy account inside your product and work their messages, conversations and participants there, with no per-customer code on your side.
  • Handle the part that actually costs time: anything sent is user-visible, so duplicates and misfires are immediately embarrassing. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Mailazy update is not your on-call problem.
  • One integration serves your product and your agents. The same governed Mailazy connection powers in-product features and gives AI agents scoped, audited access, so you put the right message in front of the right team automatically without wiring it twice.

Used by these teams

SalesCustomer SupportHR & People OpsEngineering

Compare with

Twilio

Works well with

SendGridAmazon SES

Often used alongside

Tools the same teams tend to run next to Mailazy, across other categories.

AircallCalendlyGongGoogle Calendar

Mailazy integration FAQ

How do I add a Mailazy integration to my product?

Enable the Mailazy connector in your fastn dashboard, then let each customer authenticate their own Mailazy account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Mailazy client code in your app and no per-customer branch in your codebase. Setup is 4 steps.

Do my customers each connect their own Mailazy account?

Yes. Every connection is scoped to the individual customer, so each authorises their own Mailazy account and only ever sees their own messages, conversations and participants. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.

Can AI agents use this Mailazy integration?

Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent drafts and sends a transactional message within scoped permissions, with the send attributed and audited.

Who maintains the Mailazy integration?

fastn does. When Mailazy changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.

Does each customer connect their own Mailazy account?

Yes. Every customer authorises their own Mailazy account, so messages, meetings and notifications originate from their workspace under their permissions. You never proxy through a shared account, which also means a customer revoking access affects only their own connection.

How are duplicate notifications avoided?

Sends are deduplicated per event, so a retry after a network failure does not post the same message twice into a channel people are reading.

What can I build with the Mailazy integration?

A common starting point: let each customer send transactional email from their own Mailazy account and sending domain, so messages come from them. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.

How much does the Mailazy integration cost?

It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Mailazy does not change your per-connector cost. You can start free with 3 connected accounts.

Add Mailazy to your product

Start free with 3 connected accounts. No sales call required, and no per-customer integration code.

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