Sendinblue
API for marketing and transactional email and SMS delivery.
Read docs Updated 2026-06-18
What is Sendinblue?
Sendinblue is a service that provides solutions relating to marketing and transactional email and SMS.
It is useful for applications requiring integration of email and SMS sending for marketing campaigns or transactional notifications.
What you can build with Sendinblue
Transactional email automation
Trigger order confirmations, password resets, and account alerts by calling the Sendinblue email API from backend code after key user events.
SMS notification workflows
Send time-sensitive alerts such as delivery updates or two-factor codes by integrating the SMS endpoint into existing application logic.
Email marketing list management
Sync subscriber data, create segments, and schedule campaign sends directly from a web app or CRM using the contacts and campaigns endpoints.
Get started with Sendinblue
- 1Sign up for a Sendinblue account and generate an API key in the dashboard
- 2Select an official SDK or use any HTTPS client for your language
- 3Store the API key securely and include it in the api-key header of each request
- 4Test a simple call such as sending a transactional email to a verified address
- 5Review delivery logs and statistics in the Sendinblue web interface
Sendinblue: pros & cons
Pros
- +Unified email and SMS API
- +Generous free tier for low-volume use
- +Strong deliverability reputation
- +Built-in marketing automation tools
Cons
- –Rate limits stricter on free plans
- –Advanced segmentation requires UI setup
- –Support response times vary by plan
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Frequently asked questions
Sendinblue provides marketing and transactional email plus SMS services through a single API and dashboard.
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