Blog

Insights on email delivery, developer tools, and marketing automation.

How to let AI agents send email

Give your AI agents the ability to compose and send email programmatically using the Sendkit API.

15 things you can do right now to stop your emails from landing in spam. Authentication, content, list hygiene, and sending habits.

One is triggered by user actions, the other by your calendar. Here's why the distinction matters for deliverability, compliance, and infrastructure.

A step-by-step guide to IP and domain warming — the schedule, the pitfalls, and how to build sender reputation from scratch.

Gmail, Yahoo, and Outlook now reject unauthenticated email. Here's what SPF, DKIM, and DMARC actually do and how to set them up.

Build proper bounce handling with webhooks, suppression lists, and retry logic to protect your sender reputation.

A practical guide to choosing an email API when you're building fast and can't afford to get it wrong.

Mailchimp is built for marketers. Sendkit is built for everyone — developers, marketers, and teams that need both.

Mailgun has been around forever. Sendkit is the modern alternative. Here's how they compare on DX, pricing, and features.

Amazon SES is cheap per email but expensive in engineering time. Here's when each makes sense.

An honest comparison of Sendkit and Postmark — deliverability, pricing, features, and developer experience.

A plain-language reference for every email term you'll encounter, from SPF records to bounce rates to SMTP handshakes.