Overview
Mandrill and Mailjet differ in platform philosophy. Mandrill is a transactional add-on for Mailchimp. Mailjet is a unified email platform handling both transactional and marketing. For our take on each, see our Mandrill comparison.
Mailjet's Unified Approach
Mailjet combines transactional and marketing email in one platform with one API. No separate subscriptions, no switching between dashboards. Mandrill handles transactional only and requires Mailchimp for everything else — meaning two platforms to manage.
The Developer Angle
Mailjet's MJML framework makes building responsive emails significantly easier. Write simplified markup, compile to email-safe HTML. Both platforms offer REST APIs and SMTP, but Mailjet's developer tooling is more modern and well-maintained.
The Sequenzy Alternative
For SaaS founders wanting transactional email and marketing campaigns with Stripe integration, Sequenzy offers SaaS-specific features at $49/month.