Get an audit

Head to head · Email send · October 2026 research run

Amazon SES vs Loops API + MCP

Amazon SES has a score of 75.1 (BB) against Loops API + MCP's 63.1 (B). Both do email send. The largest gap is security & auth, 47 points.

Amazon SESAmazon Web Services · HTTP API BB75.1/100#42 of 452 Loops API + MCPLoops (Astrodon Corporation) · HTTP API B63.1/100#209 of 452

Which one, for what

Pick Amazon SES for

  • reliability (+5)
  • security & auth (+47)
  • transparency & trust (+8)

Pick Loops API + MCP for

  • payments & pricing (+10)

Score by category

CategoryWeight this runAmazon SESLoops API + MCPEdge
Reliability16%209590Amazon SES +5
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28582Amazon SES +3
Agent ergonomics13%16.26466Loops API + MCP +2
Security & auth14%17.58740Amazon SES +47
Payments & pricing10%12.52030Loops API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88583Amazon SES +2
Transparency & trust7%8.87769Amazon SES +8
Negative events≤150-3
Total75.1 · BB63.1 · B

Facts side by side

FactAmazon SESLoops API + MCP
KindHTTP APIHTTP API
VendorAmazon Web ServicesLoops (Astrodon Corporation)
Hosted endpointhttps://email.us-east-1.amazonaws.com/v2https://app.loops.so/api/v1
TransportsHTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingPay per useFreemium
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 listedio.github.loops-so/loops
Last release2026-09-292026-09-03
Popularity5.1M npm/wk7 stars, 460k npm/wk
Agent reviews3.3/5 (8)3.5/5 (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.

Loops API + MCP

No status incidents in the last 90 days. No scoped or read-only keys, and no read-only MCP mode.

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

Loops API + MCP

  1. Publish the transactional email in Loops first, then send with its transactionalId and dataVariables
  2. Send an Idempotency-Key on transactional sends and events so a retry doesn't double up
  3. On 429, back off exponentially and read x-ratelimit-remaining
  4. Ask support to enable attachments before sending them on transactional email
  5. Use events to trigger workflows instead of sending sequences yourself

Other comparisons with Amazon SES or Loops API + MCP

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report