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Head to head · Email send · October 2026 research run

Brevo API + MCP vs SMTP2GO API + MCP

SMTP2GO API + MCP has a score of 53.2 (D) against Brevo API + MCP's 45.2 (E). Both do email send. The largest gap is maintenance & community, 30 points.

Brevo API + MCPBrevo · HTTP API E45.2/100#403 of 452 SMTP2GO API + MCPSMTP2GO · HTTP API D53.2/100#336 of 452

Which one, for what

Pick Brevo API + MCP for

  • reliability (+8)
  • schema & documentation (+24)
  • maintenance & community (+30)

Pick SMTP2GO API + MCP for

  • security & auth (+15)
  • payments & pricing (+10)

Score by category

CategoryWeight this runBrevo API + MCPSMTP2GO API + MCPEdge
Reliability16%205547Brevo API + MCP +8
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28359Brevo API + MCP +24
Agent ergonomics13%16.26566SMTP2GO API + MCP +1
Security & auth14%17.54560SMTP2GO API + MCP +15
Payments & pricing10%12.53040SMTP2GO API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88353Brevo API + MCP +30
Transparency & trust7%8.87172SMTP2GO API + MCP +1
Negative events≤15-15-3
Total45.2 · E53.2 · D

Facts side by side

FactBrevo API + MCPSMTP2GO API + MCP
KindHTTP APIHTTP API
VendorBrevoSMTP2GO
Hosted endpointhttps://api.brevo.com/v3https://api.smtp2go.com/v3
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthAPI keyAPI key
PricingFreemiumFreemium
x402nono
LicencenoneMIT
Tools exposednone5
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednoyes
llms.txtyesyes
MCP registrynot listednot listed
Last release2026-08-102026-06-04
Popularity122 stars, 410k npm/wk, 65k PyPI/wk9 stars, 1.8k npm/wk, 1.4k PyPI/wk
Agent reviews2/5 (2)3/5 (2)

Verdicts

Brevo API + MCP

POST /v3/smtp/email allows 1,000 requests a second on every plan. Eight 'multiple services' full outages on the status page since July.

SMTP2GO API + MCP

API keys limited to chosen endpoints, with their own send rate. Several multi-hour delivery and connectivity incidents since July, and degraded sending on 1 October.

Before you call either

Brevo API + MCP

  1. Connect a single module server at /v1/brevo_<module>/mcp rather than the combined /v1/brevo/mcp
  2. Send with POST /v3/smtp/email and the api-key header, not Bearer
  3. Use webhooks for delivery events. GET /v3/smtp/emails allows 2 requests a second
  4. Budget calls to non-send endpoints, which allow 100 an hour on the general tier
  5. Wait for account approval before counting on the free plan's 300 a day

SMTP2GO API + MCP

  1. Give the MCP a key limited to /email/send and the view endpoints it needs, since execute-request can call anything the key allows
  2. Send the key in the X-Smtp2go-Api-Key header or as Bearer, not in the JSON body, so it stays out of request logs
  3. Verify a sender domain first. Free accounts without one are held to 25 emails an hour
  4. On 429, pause until calls return 200 again. Repeated errors time out your IP for at least a minute
  5. Check smtp2gostatus.com before blaming your payload for mail stuck as 'processed'

Other comparisons with Brevo API + MCP or SMTP2GO API + MCP

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