Resend vs Brevo (Sendinblue)
A detailed comparison of Resend and Brevo (Sendinblue) for sending transactional emails. Which email API is right for your application?
Resend vs Brevo: the short answer
Choose Resend when you are building a product and want a developer email API: transactional email priced by volume, a REST API with official SDKs, and an SMTP relay. Choose Brevo when the same account should also run marketing campaigns, automation, SMS, and sales pipelines — its plans bundle transactional messages with that suite. On price, Brevo's free plan allows more email per day (300 against Resend's 100) and its first paid plan starts lower, while Resend's $20 Pro plan already includes 50,000 emails a month.
Resend vs Brevo pricing and limits
Checked October 9, 2026 against the official Resend pricing page, Resend MCP docs, and Brevo pricing page. Brevo lists Starter as a “from” price tied to monthly email volume, so recheck both pages for the volume you need before buying.
| Decision factor | Resend | Brevo |
|---|---|---|
| Free sending | 3,000/month; 100/day | Up to 300/day after account approval |
| First paid plan | Pro: $20/month for 50,000 | Starter: from $9/month, from 5,000 emails/month |
| What the plan covers | Transactional email (marketing priced separately by contacts) | Email campaigns plus transactional messages; SMS sold separately |
| MCP for AI agents | Official MCP server (hosted or resend-mcp) | MCP for ChatGPT & Claude (Starter feature) |
Where AISend fits — and where it doesn't
AISend is a transactional email API that accepts Resend's request format, so code written for Resend moves by changing the base URL. Its Pro plan is $14/month for 50,000 emails, against Resend's $20. It loses elsewhere: Pro is capped at 2,500 emails a day (lower during an account's first 14 days) where Resend's paid plans have no daily limit, at 100,000 emails AISend Business is $63/month while Resend Pro is $35, its free plan includes one sending domain to Resend's three, and it has no campaigns, automation, SMS, or sales tools — if you need those, Brevo is the better tool. See the full Resend alternative comparison, the Brevo alternative comparison, or SendGrid vs Brevo.
Resend vs Brevo FAQ
Is Resend or Brevo better for transactional email?
Resend is a developer email API: transactional sending is priced by email volume, with a REST API, SMTP relay, and official SDKs. Brevo is an all-in-one marketing platform whose plans include transactional messages alongside campaigns, automation, SMS, and sales management. Choose Resend for an API-first product, Brevo if one account should also run your marketing.
Which has the bigger free plan, Resend or Brevo?
As checked on October 9, 2026, Resend's free plan includes 3,000 emails per month with a 100-email daily limit. Brevo's free plan lets you send up to 300 emails per day once Brevo approves your account for sending.
What do Resend and Brevo cost on the first paid plan?
As checked on October 9, 2026, Resend Pro costs $20 per month for 50,000 transactional emails and $35 per month for 100,000. Brevo Starter is listed from $9 per month (USD), starting at 5,000 emails per month.
Do Resend and Brevo work with AI agents through MCP?
Yes. Resend documents an official MCP server, hosted or run locally from the open-source resend-mcp package. Brevo lists MCP for ChatGPT and Claude among its Starter plan features.
Overview
Both Resend and Brevo (Sendinblue) provide email APIs for sending transactional emails from applications. Resend and Brevo (Sendinblue) each have strengths — Resend is known for its developer experience, while Brevo (Sendinblue) offers different pricing and feature trade-offs. AISend is a third option worth weighing: a Resend-compatible API at lower flat pricing.
Features comparison
Key differences between Resend and Brevo (Sendinblue): API design and developer experience, custom domain support, webhook event tracking, bounce/complaint handling, and pricing structure. Both providers offer REST APIs and SDKs but differ on pricing and migration effort. AISend is a third option — a Resend-compatible API with flat pricing: $14/month for 50,000 emails.
Pricing
Pricing is a major factor when choosing an email API. Compare free tiers and trials, per-email costs at different volumes, and what's included in each plan. AISend offers a 3-day free trial with 500 emails and no credit card. Pro is $14/month for 50,000 emails — the same volume Resend charges $20/month for. Both Resend and Brevo (Sendinblue) have transparent pricing. AISend's plans are flat with no hidden per-contact fees, and migration from a Resend-compatible API is a one-line change.
Which should you choose?
If you're choosing between Resend and Brevo (Sendinblue), it's worth also evaluating AISend — a Resend-compatible API at flat pricing ($14/month for 50,000 emails), where switching from Resend is a base-URL change.
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