Can I use it for bulk mail?

They have a 'Broadcast' stream, but they are very strict about quality.

Mostly, but they have a UI for template management.

Postmark Review

★ 4.8

Developer-favorite transactional email API. Unmatched speed and inbox placement for receipts, password resets, and alerts.

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The Lowdown

Postmark does not want your marketing newsletter. They want your "Password Reset" and "Order Confirmation" emails. By separating these "Transactional" emails from marketing spam, they achieve near-perfect deliverability speeds. Recently acquired by ActiveCampaign.

The Good

Speed: Emails arrive in seconds, not minutes.
Templates: They have pre-coded, compatible templates for things like receipts and welcome emails.
Retention: They keep 45 days of full content logs so you can debug exactly what happened.

The Bad

No Marketing: They have a "Broadcast" stream now, but it's not a full marketing suite.

Verdict

If you are building an app, use Postmark for the system emails. Use something else for the newsletter.

Frequently asked questions

Can I use it for bulk mail?: They have a 'Broadcast' stream, but they are very strict about quality.
Is it API only?: Mostly, but they have a UI for template management.