2026-05-08
Engineering
· 8 min read
Most "email APIs" are a thin wrapper around someone else's deliverability problem. This post explains why we made the heavier choice to run our own outbound MTAs — Haraka, on dedicated bare metal — and what we get from it that an API wrapper can't deliver.
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2026-05-07
Postmortem
· 6 min read
Cloudflare Analytics showed three errors against our /v1/inbound endpoint. Three errors a day, every day. We finally chased it down: an 8 MB request-body cap that real Gmail forwards routinely exceed. A short postmortem on the diagnosis, the fix, and the defensive layer we added to catch this class of bug earlier.
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2026-05-04
Deliverability
· 9 min read
The first question potential customers ask after pricing: "do you have an EU region?" The second: "why does it matter if I'm sending from the US anyway?" This is the long answer — covering DMARC alignment, MTA-STS, recipient-server geographic latency, and the GDPR ground truth.
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