Side-by-side comparison of free tiers, pricing changes, and stability. Catalogue dates here run to 2026-11-05.
Quick Verdict: Resend is a developer-first transactional email API with React Email support. Brevo (formerly Sendinblue) is an all-in-one marketing + transactional platform. Choose Resend for pure transactional email DX; choose Brevo for combined marketing and transactional needs.
300 emails/day, up to 100,000 contacts, marketing automation for up to 2,000 contacts, segmentation and signup forms; landing pages need the Standard plan. Formerly Sendinblue
Signing up for Brevo needs no credit card details, only an email address and an organization name. (From brevo.com/pricing, read 2026-10-23.)
Brevo requires account approval before sending. After approval, the Free plan allows up to 300 emails per day. (From brevo.com/pricing, read 2026-11-06.)
Developer-first email API — 3K emails/month free (100/day cap), 3 domains, 1K marketing contacts/month, 5 AI credits, 30-day data retention
Until you verify a domain, Resend sends only from its resend.dev test domain, and only to the email address on your Resend account; mail to anyone else is refused with a 403 error. (From resend.com/docs/knowledge-base/403-error-resend-dev-domain, read 2026-10-20.)
Resend's free plan needs no credit card. (From resend.com/agents, read 2026-10-23.)
Resend launched Inboxes on October 22, 2026. "An inbox sends and receives email at an address on one of your domains." Every plan includes 3 Inboxes. Inboxes can be used by agents to receive tasks and updates. (From resend.com/blog/announcing-inboxes, read 2026-11-06.)
Broadcasts sent through the /broadcasts API or the dashboard do not count against the 3,000 transactional emails a month. Marketing plans are limited by contacts, not email volume. Emails sent or received through an inbox count towards the transactional emails quota. (From resend.com/pricing, read 2026-11-06.)
The default API rate limit is 10 requests per second per team across all API keys. The limit can be increased for trusted senders upon request. (From resend.com/docs/api-reference/rate-limit, read 2026-11-06.)
The API rate limit is the same on every plan and does not change when upgrading. The Batch Email API sends up to 100 emails per request, counting as one request against the limit. (From resend.com/pricing, read 2026-11-06.)
The Free plan has a daily quota of 100 emails, reset at midnight UTC, not a rolling 24-hour window. Paid plans have no daily quota, only a monthly limit. (From resend.com/docs/api-reference/rate-limit, read 2026-11-06.)
Key Differences
Free volume: Brevo allows 300 emails/day (~9K/month) with up to 100K contacts. Resend allows 3K emails/month, capped at 100 a day.
Scope: Brevo includes marketing automation, landing pages, CRM, and segmentation. Resend sends transactional emails using the /emails API and marketing emails using the /broadcasts API or dashboard. Its marketing plans are limited by the number of contacts, not emails.
Developer experience: Resend integrates with React Email for JSX-based templates, has a minimal API, and feels modern. Brevo's API is more traditional with a larger surface area.
Growth pricing: Brevo's paid plans start at $9/month for 5K emails. Resend starts at $20/month for 50K emails — better per-email economics at scale.
Pricing Change History
Brevo
No recorded pricing changes for Brevo.
Resend
increasedeffective between 2026-08-19 and 2026-08-20medium impact
The free tier now has a limit of 3,000 emails/month (100/day) and includes 3 domains. Previously 3K emails/month (100/day) and 1 domain. The free tier also includes ticket support, 10,000 automation runs, and 30-day data retention. Source ↗
Our Recommendation
Choose Resend if you're building a developer-focused product, want the cleanest API and React Email integration, or only need transactional email.
Choose Brevo if you need marketing email alongside transactional (newsletters, automation, landing pages) or want the highest free sending volume.
Resend is a developer-first transactional email API with React Email support. Brevo (formerly Sendinblue) is an all-in-one marketing + transactional platform. Choose Resend for pure transactional email DX; choose Brevo for combined marketing and transactional needs.
What is Brevo's free tier?
Brevo offers a Free plan: 300 emails/day, up to 100,000 contacts, marketing automation for up to 2,000 contacts, segmentation and signup forms; landing pages need the Standard plan. Formerly Sendinblue. Signing up for Brevo needs no credit card details, only an email address and an organization name. (From https://www.brevo.com/pricing/, read 2026-10-23.) Brevo requires account approval before sending. After approval, the Free plan allows up to 300 emails per day. (From https://www.brevo.com/pricing/, read 2026-11-06.) On the Free plan, the Brevo logo is always displayed in the email footer. (From https://help.brevo.com/hc/en-us/articles/209429285-Will-my-contacts-know-that-I-m-using-Brevo, read 2026-11-06.)
What is Resend's free tier?
Resend offers a Free plan: Developer-first email API — 3K emails/month free (100/day cap), 3 domains, 1K marketing contacts/month, 5 AI credits, 30-day data retention. Until you verify a domain, Resend sends only from its resend.dev test domain, and only to the email address on your Resend account; mail to anyone else is refused with a 403 error. (From https://resend.com/docs/knowledge-base/403-error-resend-dev-domain, read 2026-10-20.) Resend's free plan needs no credit card. (From https://resend.com/agents, read 2026-10-23.) Resend launched Inboxes on October 22, 2026. "An inbox sends and receives email at an address on one of your domains." Every plan includes 3 Inboxes. Inboxes can be used by agents to receive tasks and updates. (From https://resend.com/blog/announcing-inboxes, read 2026-11-06.) Broadcasts sent through the /broadcasts API or the dashboard do not count against the 3,000 transactional emails a month. Marketing plans are limited by contacts, not email volume. Emails sent or received through an inbox count towards the transactional emails quota. (From https://resend.com/pricing, read 2026-11-06.)
Should I choose Brevo or Resend?
Choose Resend if you're building a developer-focused product, want the cleanest API and React Email integration, or only need transactional email. Choose Brevo if you need marketing email alongside transactional (newsletters, automation, landing pages) or want the highest free sending volume.