Jabal

July 21st

The Postmark MCP server, one year later: from 4 tools to 24

About a year ago, we introduced something experimental from Postmark Labs: an MCP server that let an AI assistant send email through Postmark. It shipped with exactly one useful tool, sendEmail, plus three supporting ones (four total). You gave it a recipient, a subject, and a body, and it sent. We said at the time we'd started with a single Postmark server "because we had to start somewhere."

Continue reading • Jabal Torres wrote in Product news

July 14th

Sending bulk email in Python? Prioritize practices that get your mail delivered

Recipients associate bulk email with spam, inbox clutter, and irrelevant marketing campaigns. Senders associate it with poor deliverability, complicated orchestration, and the constant fear of landing in spam folders.

If you handle bulk email, these problems may sound familiar. The DIY Python approach — install smtplib, divvy up your mailing list in a CSV file, set up a loop function, hope for the best — all but guarantees delivery problems. The mail itself isn’t the problem, though.

Continue reading • Greg Svoboda wrote in Email delivery

June 30th

Automate Python emails with attachments that get delivered

Expert guide on how to set up automated emails with attachments that actually get delivered using Python.

Continue reading • Greg Svoboda wrote in Email delivery

April 29th

Sending mission-critical emails in Python: SMTP or API?

This article compares sending email in Python using SMTP and API. SMTP is quick to set up—especially with a library like smtplib—but it won't scale as your app grows.

Continue reading • Greg Svoboda wrote in Email delivery

March 31st

We migrated our email infrastructure to KumoMTA. Here's why it matters for you.

We've completed our migration from PowerMTA to KumoMTA, an open-source, high-performance mail transfer agent (MTA). Every email Postmark sends now runs through KumoMTA. It's the biggest infrastructure change we've made in years, and it sets the stage for everything we want to build next.

Continue reading • Alex Burch wrote in Engineering

Blog

The Postmark MCP server, one year later: from 4 tools to 24

Sending bulk email in Python? Prioritize practices that get your mail delivered

Automate Python emails with attachments that get delivered

Sending mission-critical emails in Python: SMTP or API?

We migrated our email infrastructure to KumoMTA. Here's why it matters for you.

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