respatch
api based dynamic transactional email provider
respatch launched on March 20, 2020 with 6 votes, #1,370 of 4,417 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 6 years on.
What it does
Building, writing, testing, and delivering transactional emails is a pain. You need a quick way to have a proven tested and translated email delivered to your customers using your email provider. What you need is respatch.
Respatch is the deterministic orchestration layer for global logistics. A unified API to route, track, verify, and settle physical goods in real-time — wallet-first billing, cryptographic proof of delivery.
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Resend2023 · resend.com · ▲1,325An entire collection of pre-built components with a much faster development experience.




Email API benchmarksMar 2026 · knock.app · ▲113Hey HN, I'm Chris, CTO of Knock (https://knock.app). We built email.info because every developer we talk to asks the same question: which email provider should I use? The existing resources are mostly vibes — "Best of" listicles, anonymous Reddit threads, or LLM answers trained on that same content. Objective performance data is always missing. Knock is a notification infrastructure platform, so we send billions of API requests to downstream email providers every year. We aggregated that data into a public dashboard covering 10 providers (SendGrid, Postmark, Resend, Mailgun, Amazon…
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