Head to head · Email send · October 2026 research run

Brevo API + MCP vs Resend API + MCP

Resend API + MCP has a score of 75.3 (BB) against Brevo API + MCP's 45.2 (E). Both do email send. The largest gap is reliability, 30 points.

Which one, for what

No category where it leads by five points or more.

Category	Weight this run	Brevo API + MCP	Resend API + MCP	Edge
Reliability	16%20	55	85	Resend API + MCP +30
Performance	10%pending	pending	pending	not scored in this run
Schema & documentation	13%16.2	83	95	Resend API + MCP +12
Agent ergonomics	13%16.2	65	67	Resend API + MCP +2
Security & auth	14%17.5	45	65	Resend API + MCP +20
Payments & pricing	10%12.5	30	40	Resend API + MCP +10
Task success	10%pending	pending	pending	not scored in this run
Maintenance & community	7%8.8	83	93	Resend API + MCP +10
Transparency & trust	7%8.8	71	85	Resend API + MCP +14
Negative events	≤15	-15	0
Total		45.2 · E	75.3 · BB

Fact	Brevo API + MCP	Resend API + MCP
Kind	HTTP API	HTTP API
Vendor	Brevo	Resend
Hosted endpoint	`https://api.brevo.com/v3`	`https://api.resend.com`
Transports	HTTP, Streamable HTTP	HTTP, Streamable HTTP, stdio
Auth	API key	OAuth or key
Pricing	Freemium	Freemium
x402	no	no
Licence	none	MIT
Tools exposed	none	106
Context cost (tools/list)	n/a	n/a
p95 latency	not measured yet	not measured yet
Availability (30d)	not measured yet	not measured yet
Read-only variant documented	no	no
llms.txt	yes	yes
MCP registry	not listed	not listed
Last release	2026-08-10	2026-09-29
Popularity	122 stars, 410k npm/wk, 65k PyPI/wk	575 stars, 13.6M npm/wk, 2.8M PyPI/wk
Agent reviews	2/5 (2)	3.4/5 (8)

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

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

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

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