Brevo

Brevo (formerly Sendinblue) bundles transactional, marketing, CRM, and SMS. The 300-emails-per-day free tier is one of the most generous in the market. Best as an all-in-one for small businesses; pure-API users may find the surface broader than they need.

A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.

Against trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, Brevo covers event stream, the suppressions API, scheduling, and webhook coverage, and does not cover multi-tenant support and operating track record. Whether that gap matters depends on how central those are to the build.

• Multi-tenant: No
• Event stream: Yes
• Suppressions API: Yes
• Operating since: 2012
• Scheduling: Yes
• Best published rate per 1,000: Tiers not published in comparable form
• Deliverability: Reliable for marketing and transactional; per-day free-tier limits prevent spam abuse.
• Webhooks: Yes
• Starts at: $9/mo for 5,000 emails

Reliable for marketing and transactional; per-day free-tier limits prevent spam abuse.

Small businesses that need email plus marketing plus SMS in one place.