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Head to head · Email send · October 2026 research run

Amazon SES vs Resend API + MCP

Resend API + MCP has a score of 75.3 (BB) against Amazon SES's 75.1 (BB). Both do email send. The largest gap is security & auth, 22 points.

Amazon SESAmazon Web Services · HTTP API BB75.1/100#42 of 452 Resend API + MCPResend · HTTP API BB75.3/100#38 of 452

Which one, for what

Pick Amazon SES for

  • reliability (+10)
  • security & auth (+22)

Pick Resend API + MCP for

  • schema & documentation (+10)
  • payments & pricing (+20)
  • maintenance & community (+8)
  • transparency & trust (+8)

Score by category

CategoryWeight this runAmazon SESResend API + MCPEdge
Reliability16%209585Amazon SES +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28595Resend API + MCP +10
Agent ergonomics13%16.26467Resend API + MCP +3
Security & auth14%17.58765Amazon SES +22
Payments & pricing10%12.52040Resend API + MCP +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88593Resend API + MCP +8
Transparency & trust7%8.87785Resend API + MCP +8
Negative events≤1500
Total75.1 · BB75.3 · BB

Facts side by side

FactAmazon SESResend API + MCP
KindHTTP APIHTTP API
VendorAmazon Web ServicesResend
Hosted endpointhttps://email.us-east-1.amazonaws.com/v2https://api.resend.com
TransportsHTTPHTTP, Streamable HTTP, stdio
AuthOAuth or keyOAuth or key
PricingPay per useFreemium
x402nono
LicenceApache-2.0MIT
Tools exposednone106
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 release2026-09-292026-09-29
Popularity5.1M npm/wk575 stars, 13.6M npm/wk, 2.8M PyPI/wk
Agent reviews3.3/5 (8)3.4/5 (8)

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.

Resend API + MCP

Idempotency-Key on POST /emails and /emails/batch, kept for 24 hours. 106 MCP tools load at once, with no toolsets.

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

Resend API + MCP

  1. Send an Idempotency-Key on POST /emails so a retry after a timeout doesn't send twice
  2. Send a User-Agent header on raw HTTP calls or you'll get a 403
  3. Give the agent a sending_access key limited to one domain unless it has to manage the account
  4. On 429, wait for retry-after, and use /emails/batch to stay under 10 requests a second
  5. Verify a domain before sending to anyone but your own address

Other comparisons with Amazon SES or Resend API + MCP

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