Transactional Email
Password resets, receipts, onboarding flows. The emails your users actually need to receive, reliably.
Business Email Setup: Skip the SES Sandbox Trap (2026)
We applied to leave the Amazon SES sandbox. Got denied. Here is the three-part email stack that actually works - and why the SES sandbox is a trap, not a testing tool.
Updated October 2026Resend vs Loops: What They Are Actually Solving (and Which We Chose) (2026)
We use Resend. We evaluated Loops before committing. They are solving different problems - here is what we found and why the comparison is less straightforward than it looks.
Updated October 2026Mailtrap vs Amazon SES: Why Developers Keep Comparing Two Different Tools (2026)
Mailtrap tests emails before they reach real users. SES sends them to real users. They are not competing - but one has a sandbox that traps you and one has a sandbox that saves you.
Updated October 2026What an Email Sandbox Is (and the Week We Wished We Had One) (2026)
An email sandbox catches the emails your app sends in development before they reach real inboxes. We learned why that matters the fortnight our test sends pushed our bounce rate to 25% and dented our sender reputation.
Updated June 2026Postmark vs Resend: Deliverability Reputation vs Developer Experience (2026)
Postmark built its name on transactional deliverability and guards it strictly. Resend built a cleaner developer experience and a generous free tier. We use Resend - here is the honest comparison and when Postmark is the better call.
Updated September 2026More comparisons and recommendations in this category are in progress. Every article is based on real usage across our projects.