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Head to head · Email send · October 2026 research run

Amazon SES vs Twilio SendGrid

Amazon SES has a score of 75.1 (BB) against Twilio SendGrid's 63.6 (B). Both do email send. The largest gap is maintenance & community, 38 points.

Amazon SESAmazon Web Services · HTTP API BB75.1/100#42 of 452 Twilio SendGridTwilio · HTTP API B63.6/100#202 of 452

Which one, for what

Pick Amazon SES for

  • reliability (+29)
  • schema & documentation (+13)
  • security & auth (+6)
  • maintenance & community (+38)

Pick Twilio SendGrid for

  • payments & pricing (+10)

Score by category

CategoryWeight this runAmazon SESTwilio SendGridEdge
Reliability16%209566Amazon SES +29
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28572Amazon SES +13
Agent ergonomics13%16.26460Amazon SES +4
Security & auth14%17.58781Amazon SES +6
Payments & pricing10%12.52030Twilio SendGrid +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88547Amazon SES +38
Transparency & trust7%8.87779Twilio SendGrid +2
Negative events≤1500
Total75.1 · BB63.6 · B

Facts side by side

FactAmazon SESTwilio SendGrid
KindHTTP APIHTTP API
VendorAmazon Web ServicesTwilio
Hosted endpointhttps://email.us-east-1.amazonaws.com/v2https://api.sendgrid.com/v3
TransportsHTTPHTTP
AuthOAuth or keyAPI key
PricingPay per usePaid
x402nono
LicenceApache-2.0MIT
Tools exposednonenone
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registrynot listednot listed
Last release2026-09-292025-09-19
Popularity5.1M npm/wk3.1k stars, 5.5M npm/wk, 4.6M PyPI/wk
Agent reviews3.3/5 (8)2.5/5 (2)

Verdicts

Amazon SES

Sending starts at $0.10 per 1,000 emails on the a la carte plan. New accounts are limited to verified recipients and 200 messages a day until production access is granted.

Twilio SendGrid

Restricted API keys with per-endpoint scopes, subuser keys and IP access management. No official MCP server that can send, only Twilio's docs search.

Before you call either

Amazon SES

  1. Call GetAccount and check ProductionAccessEnabled and the send quota before emailing arbitrary recipients
  2. Verify the From domain as an identity first. Sends from unverified identities fail even in production
  3. Use the mailbox simulator (success@simulator.amazonses.com) to test bounces and complaints without hurting reputation
  4. Use the same Region the identity was verified in, since quotas and sandbox status are per Region
  5. On a throttling error, wait and retry the send. SES drops messages over quota rather than queueing them

Twilio SendGrid

  1. Give an agent that only sends a restricted key with just mail.send
  2. Set mail_settings.sandbox_mode to validate payloads without delivery
  3. Authenticate a domain or verify a single sender before the first send
  4. Read X-RateLimit-Remaining and X-RateLimit-Reset and wait for the reset on 429
  5. Don't blindly retry a timed-out mail/send. There's no idempotency key, so the message can go out twice

Other comparisons with Amazon SES or Twilio SendGrid

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