Email API
Postmark
Transactional email service with separate transactional and broadcast streams, owned by ActiveCampaign since May 2022.
Focused on transactional email rather than campaigns.
Wildbit sold Postmark to ActiveCampaign in May 2022, and Postmark remains available as a standalone product. Sending is split into message streams so receipts and password resets are kept apart from broadcasts, and bounce and delivery webhooks push events to your application as JSON. Worth a look when the job is reliable product email, not newsletters.
Where it shines
- Transactional and broadcast mail kept in separate streams
- Bounce and delivery webhooks, with a test domain for safe bounce testing
Check before signing
- No campaign builder or drip sequences: pair it with a marketing tool if you need them
- Broadcast and inbound messages count toward the monthly volume
What it offers
- Solves
- Transactional notifications & alerts
- Channels
- Industries
- Any industry
- Markets
- Global
- Languages
- English
- Security and privacy attestations
- GDPR (DPA offered)Each one cites its source below.
Technical details
- Type of solution
- Email delivery
- Deployment
- Programmable API
- Company size
- Small businessMid-sized company
- Pricing
- Published pay-as-you-go
Something is listed only when it can be checked. A connection we could not confirm is left off, and Find providers then credits the API at half weight.
Our six checks
- Operational transparencyNot assessed
Not yet worked through.
- Documented interfacesMet
Public API reference, integrable without a sales call.
- Delivery accountabilityMet
Per-recipient delivery and bounce webhooks documented.
- Consent and complianceNot assessed
Not yet worked through.
- Data handlingNot assessed
Not yet worked through.
- Commercial clarityMet
List pricing published.
Not assessed is not a failure — it means we have not checked yet. Methodology
Evidence
Sources
- Postmark has been acquired by ActiveCampaign — Wildbit, 2022-05
- Pricing — Postmark
- Bounce webhook — Postmark Developer
- Delivery webhook — Postmark Developer
- Data Processing Addendum — Postmark, 2025-11To re-check
Every attribute
The same attributes, measured by the same rules, for every listing. "Not recorded" means we have not checked yet — never a "no". Spot something missing or wrong? Suggest an edit.
What it does
Where, and for whom
Setup and connections
The company
- Same owner as cpaas.co
- No
Our checks
The community
- "Looks right" confirmations
- 0
- Community reviews
- 0
- Community rating
- Not applicable
Experiences and ratings
Share your experienceNo experiences with Postmark yet. Used it? Yours could be the first.
Reviews are read by a moderator before they appear, are shown beside the facts, and never feed a score or a ranking. You may not review a product you work for, sell, compete with or are paid to promote.
Profile shape
- Channels
- 13
- Reach
- 100
- Connectors
- 17
- Deployment
- 33
- Price clarity
- 100
- Criteria shown
- 50
Breadth measures from recorded facts — not a quality score.