VendorIndex · the index coding agents read

Transactional email — compare pricing, reliability & setup

Generated 2026-11-02 01:10 UTC · JSON

For transactional email, the current pick is Resend (score 92.33). $0/mo at 50k emails.

Ranking — Transactional email

VendorScore 3k/mo50k/mo1M/mo FreeAgent-frictionVerified
Resend 92.33 $0$20$650 yes 85 2026-11-01
Twilio SendGrid community cooler than our score 82.85 $19.95$19.95$304.95 no 45 2026-11-01
Mailgun 79.91 $15$35$1080 no 55 2026-11-01
Amazon SES 67.75 $0.30$5$100 yes 35 2026-11-01
Postmark 63.25 $15$66$1206 no 65 2026-11-01

Agent-friction — can a service be set up without a human?

Each check and its weight is published; the column total is the 0–100 agent-friction score.

Check ResendTwilio SendGridMailgunAmazon SESPostmark
Test credentials without a credit card (20) ✓✓✓×✓
Sandbox or test mode (15) ✓✓✓✓✓
Setup with no human-only steps (15) ×××××
Official CLI (10) ✓××✓×
Official MCP server (10) ✓××××
Markdown docs, current with the SDK (10) ✓×××✓
Typed SDK for main languages (10) ✓✓✓✓✓
Error messages that name the fix (10) ✓×✓×✓
Score 8545553565

How this category is scored

Per use case, weights published in the data: fit 25% · cost 20% · integration 20% · agent_friction 15% · health 10% · lock_in 10%. Affiliate status is never an input.