Business — entry 010 of 19
mailjet
Mailjet's REST API sends transactional and marketing email, manages contact lists and MJML/HTML templates, and reports on delivery and engagement events. It authenticates with HTTP Basic Auth using a public/private API key pair rather than a single token, confirmed live via a `WWW-Authenticate: Basic realm="Provide an apiKey and secretKey"` challenge, and shows no CORS headers on GET or OPTIONS, making it a server-side-only API like most transactional email providers.
AuthenticationBasic AuthSign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSDisabledBrowser calls need a server-side proxy.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSONResponses can be requested as JSON.
GreatAPIs Score
Score75
Authentication15/25Basic Auth credentials required
Pricing17/20Freemium tier available
Docs14/20Documentation URL provided
Formats9/15Single response format
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/mailjet/"><img src="https://greatapis.com/badge/mailjet.svg" alt="Scored 75 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.