IP Allowlisting adds one more layer to that practice. You tell Postmark which IP ranges are allowed to send email through the API, and requests from outside those ranges are rejected — so API sending is limited to the infrastructure you've approved, not only to whoever holds a valid token.
Continue reading • Dan DiGangi wrote in Product news
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
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
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
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
