Developer docs · InboxRatio Editorial

Mailjet email API: SDKs, docs and limits (2026)

Every link below points into Mailjet's official developer documentation and was checked on 10 September 2026. We record only what the vendor documents — a field we could not verify at the source is left out, never guessed.

From Mailjet's official docs · checked 10 September 2026

Docs, SDKs and limits

Developer docs: dev.mailjet.com/
API reference: dev.mailjet.com/docs/api-reference
SDK languages: C#GoJavaNode.jsPHPPythonRubyAs listed in Mailjet's official SDK docs
SMTP relay: Yes · SMTP docs
Webhooks: Webhook docs
Pricing page: www.mailjet.com/pricing/

From our feature matrix — documented by the vendor

API, SMTP and sending auth

API'Email API - Send transactional or marketing emails'; APIs on all plans incl. Free
SDKs / client librariesOfficial API v3 wrappers published on Mailjet's GitHub (e.g. 'Official Mailjet API v3 NodeJS wrapper', PHP wrapper); dev.mailjet.com lists 'Language Libraries'
Public API docsPublic developer docs at dev.mailjet.com / documentation.mailjet.com
Webhooks'Event API - Track email events... through a simple webhook endpoint'
SMTP APISMTP credentials for any application
SMTP relay'Connect Mailjet to any application using SMTP credentials'
Transactional email'Transactional Notifications' + transactional sending core
SPF assistance'How to setup DomainKeys (DKIM) and SPF in my DNS records' setup docs
DKIM setup'Authenticating Domains with SPF and DKIM: A Complete Guide'
DMARC support'Understanding DMARC' help-center doc

Features checked 10 September 2026. ✓ documented · ◐ limited or plan-gated · × documented as absent · — not documented. Documentation is not a measured result — see our methodology.

Pricing snapshot

Paid Mailjet plans start at $9/mo (Starter), checked 19 August 2026. Full Mailjet pricing by volume

Generated from our datasets — every value verified and dated

Frequently asked questions

Where are the official Mailjet API docs?

Mailjet's official developer documentation is at https://dev.mailjet.com/, and the API reference is at https://dev.mailjet.com/docs/api-reference. Links checked on 10 September 2026.

Does Mailjet have an SDK for Python?

Yes. Python is among the SDK languages listed in Mailjet's official docs: C#, Go, Java, Node.js, PHP, Python and Ruby (checked 10 September 2026).

Does Mailjet support SMTP relay?

Yes. Mailjet's official docs document SMTP relay sending: https://dev.mailjet.com/docs/smtp-relay (checked 10 September 2026).

Does Mailjet offer webhooks?

Yes. Mailjet's official docs cover webhook event notifications: https://dev.mailjet.com/docs/email-api/webhooks/webhooks-overview (checked 10 September 2026).