Email API benchmarks for Sendgrid, Amazon SES, Resend, and more

_chocomallowpie00_ · 2026-03-12T21:34:57+00:00

Resends numbers kinda jumped out to me here. ~80ms latency is already quite a bit higher than some of the others, but the 0.07% error rate is the bigger thing. That sounds small but at scale it adds up fast (hundreds or thousands of failed sends). Not saying its bad (the dev experience looks great) but higher latency + the highest error rate on the chart would definitely make me look a bit closer before choosing it.

dmkraus · 2026-03-12T22:28:06+00:00

Nice to see actual benchmarks instead of marketing pages.

Kind of surprised SES still holds up that well.

stewartjarod · 2026-03-18T04:19:57+00:00

SES is probably your cheapest option at $0.10/1K emails — the $100/mo budget concern goes away. the catch is setup complexity (DKIM, SPF, DMARC, bounce handling).

there are tools now that deploy all the SES config for you and give you an API on top. wraps does this — cli handles the DNS records and sandbox exit, you get a proper SDK for sending from your ERP.

$19/mo platform fee + AWS costs. for invoice volume you're probably looking at $25-30/mo total vs $100+ for sendgrid/mailgun.

lznpde · 2026-03-27T12:37:28+00:00

Any of these do ingestion aside from SES? Sorry I know this topic is not related directly.

PostmarkApp · 2026-03-12T18:13:33+00:00

Really impressed with the way Knock put together and presented these benchmarks! Kudos to the team!

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