Blog
Product updates, engineering insights, and email delivery best practices.
Self-Host Email vs Use an API: A Decision Framework
When does rolling your own Postfix make sense, and when are you about to set €500/month of operator time on fire? Five variables, two clear-win scenarios, and the hybrid pattern most teams converge on.
Read moreGDPR-Compliant Email API in 2026: A Buyer’s Guide
What "GDPR-compliant email API" actually means in practice, the four traps US-hosted providers fall into, and a buyer’s checklist your DPO will recognise.
Read moreBest Transactional Email APIs in 2026
Side-by-side comparison of the six transactional email APIs that matter in 2026: PostStack, Resend, Postmark, SendGrid, Mailgun, and Amazon SES — with current pricing at 10k, 50k, and 100k emails per month.
Read morePostStack vs Resend: Which Email API Should You Choose?
Head-to-head comparison of PostStack and Resend — pricing, API design, features, and when to pick each. PostStack is 18-72% cheaper with EU data residency and IMAP mailboxes built in.
Read morePostStack vs SendGrid: Modern Email API vs the Legacy Incumbent
How PostStack compares to SendGrid in 2026 — clean REST API, EU data residency, predictable pricing, and built-in features SendGrid gates behind add-ons.
Read morePostStack vs Postmark: Transactional Email Compared
PostStack vs Postmark in 2026 — Postmark has the deliverability reputation, PostStack has a real free tier, IMAP mailboxes, and is up to 67% cheaper at low and mid volume tiers.
Read more5 Cheap Resend Alternatives in 2026
Looking for a cheaper Resend alternative? PostStack, Amazon SES, Mailgun, SendGrid, and Brevo compared by price, features, and developer experience.
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