Postmark API: What You Can Do and How to Use It with AI Agents
Postmark is a service for sending transactional email, such as confirmations, password resets and notifications. Its API lets you send email, use templates, track deliveries and bounces and process incoming email. Product and engineering teams that need high deliverability use it.
What the Postmark API offers
Sending email
Send single or batch messages by API.
Templates
Models with variables for recurring messages.
Bounces
Look up bounces and reactivate addresses.
Messages and statistics
History of sends, opens and clicks.
Inbound email
Receive and process email sent to your address.
Webhooks
Events for delivery, bounce, open and spam complaint.
How to access the Postmark API
- With your company’s credentialsUses a server token for sending and queries on one server and an account token for administration, both sent in the request headers.
- Postmark separates transactional and broadcast streams: do not mix marketing into transactional.
- High bounce or spam rates can lead to the account being blocked.
- Emails contain personal data: define how long the history is kept.
Official documentation: postmarkapp.com/developer
What an iTeam agent does with the Postmark API
Email did not arrive
When a customer says they did not get the email, the support agent checks the history in Postmark and explains whether it bounced or was filtered.
Bounces handled
The agent lists hard bounces and updates the customer record, asking for a valid email address.
Replies to incoming email
Emails that arrive through inbound are read by the agent, classified and routed to the right team.
Deliverability health
The agent tracks bounce and spam rates and alerts when they pass the limit.
From the credential to the agent at work, with approval
Create the server and the token
In Postmark, use the right server and message stream and copy the server token.
Register it in the iTeam vault
The token stays in the vault. The agent sends only approved templates and queries the history.
Test with internal addresses
Send to internal mailboxes, check templates and webhooks, and only then open it to customers.
Ready-made AI teams for this work
WhatsApp customer service
Customers write at 11 p.m. and on Sundays. This team replies in seconds, with your prices and policies, and calls a person when it should.
Help desk support team
It reads each ticket, finds the answer in your docs and past replies, and drafts a response your agents can send or improve.
AI phone receptionist
It answers the phone, books the visit in your calendar and sends your team a short note about every call.
Online store support team
It looks up the real order in Shopify or WooCommerce and answers tracking, return and exchange questions in seconds.
Customer success team
It reads usage, tickets and CRM notes every week and tells your team which accounts need a call, and why.
Customer feedback analysis
It reads every comment, finds the themes behind the scores and tells each area what customers are asking it to fix.
Questions about the Postmark API
Is the Postmark API free?
Postmark offers a small volume for testing and charges plans by the number of emails. The API is part of the service.
Do I need to write code to use the Postmark API with iTeam?
Not necessarily. iTeam reads the documentation and the deployment team sets up templates and events.
Is Postmark suitable for newsletters?
Postmark has its own broadcast stream, separate from transactional. Use it according to their rules.
