Transactional specialist.
Postmark is unusual in the email space because it deliberately refuses to send marketing email. Their whole business is built around protecting the deliverability of transactional senders, which means: no bulk-mail customers on the same IPs, no shared reputation pollution, no "we'll let your campaigns slide this time" leniency. That focus shows up as some of the best inbox-placement numbers in the industry for the kind of emails Devani sends.
The honest comparison.
Both providers are wired up the same way in Devani — pick one, paste an API key, you're done. The differences are about pricing and deliverability characteristics.
Postmark · pay per email
Postmark charges per email sent, with no free tier above a small test allowance. Better deliverability, simpler pricing.
Mailjet · generous free tier
Mailjet has a real free tier suitable for low-volume sites. Sufficient deliverability for most use cases.
Templates
Both support template management. Postmark's template editor is more developer-friendly; Mailjet's is more designer-friendly.
Analytics
Both give you opens, clicks, bounces. Postmark's analytics are tighter and easier to read; Mailjet's are more comprehensive.
Same shape as Mailjet.
- Create a Postmark account
- Set up a sending domain (you'll be asked to do SPF and DKIM)
- Create a server in Postmark and generate a server API token
- Paste the token into Devani's email settings
- Switch the active provider to Postmark, send a test
The practical answer.
If you're sending fewer than a few hundred transactional emails a month and want to pay nothing, Mailjet's free tier wins. If you're sending high volumes of important transactional email where deliverability matters more than cost — order confirmations for an active store, password resets at scale, account notifications — Postmark is usually the better answer.
Both are good. Pick one, ship.
Pick a sender. Ship the email.
Mailjet or Postmark. Both wired into Devani.