Snapshot
Continue to About ↓- What it does
- Postmark is an email delivery service for sending transactional and bulk email from your application through a REST API, official SDKs, or SMTP.
More detail
- It separates transactional messages from marketing and broadcast sends onto different sending infrastructure so promotional mail does not degrade critical-message deliverability, and it adds templates, inbound email processing, analytics, webhooks, and message retention.
- Best for
- Developers and teams that need to wire transactional email into an app quickly and want strong deliverability, plus agencies or larger teams that need many custom sending domains and unlimited users.
- Pricing
- Plans start with a free tier of 100 emails a month for testing only, with no overages allowed.
More detail
- Basic is $15.00/mo, Pro $16.50/mo, and Platform $18.00/mo, each including 10,000 emails a month with overage at $1.80, $1.30, and $1.20 per 1,000 emails respectively.
- There is no plan between the 100-email
- Main limitation
- Senders whose volume falls between 100 and 10,000 emails a month, and anyone who needs hard spending caps, invoice billing, or a full marketing-automation and CRM suite rather than delivery infrastructure.
- Record
- Living and monitored
- Reviewed
- Evidence
- Public web research
- Machine access
- Structured profile ↗
About
- Postmark is an email delivery service for sending transactional and bulk email from your application through a REST API, official SDKs, or SMTP.
- It separates transactional messages from marketing and broadcast sends onto different sending infrastructure so promotional mail does not degrade critical-message deliverability, and it adds templates, inbound email processing, analytics, webhooks, and message retention.
What it helps with
- Emails landing in spam instead of the inbox, addressed through sender vetting and deliverability practices
- Slow arrival of transactional email such as password resets and receipts
- Marketing and broadcast sends degrading the deliverability of time-critical transactional email
- Time-consuming email integration and migration from another provider
- Troubleshooting delivery failures with bounce handling, message retention, and event webhooks
- Receiving and parsing inbound email into structured data
Capabilities
A practical view of what is available and where limitations apply.
| Offering | Available | Detail |
|---|---|---|
| REST API and SMTP sending | Yes | Send email either through the REST API or the SMTP service with TLS on port 587. |
| Official SDKs | Yes | Libraries published for Node.js, Python, Ruby, PHP, .NET, and Rails. |
| Message Streams | Yes | Separate infrastructure for transactional versus marketing and broadcast mail. |
| Inbound email processing | Limited | Included on the Pro and Platform plans only. |
| Bulk Email API and batch sending | Yes | Batch sending supported, with unlimited emails per day on paid plans. |
| Analytics and webhooks | Yes | Delivery, bounce, spam, and open rates, open and link tracking, plus delivery, bounce, open, and click webhooks. |
| Full message retention | Limited | 45 days by default; customizable up to 365 days as a paid add-on on Pro or higher. |
| Dedicated IPs | Limited | From $50/month per IP, available only at 300,000+ emails/month and on Pro or higher. |
| Security and authentication | Yes | Two-factor authentication, granular user permissions, DKIM, SPF, and DMARC support, and opportunistic TLS for outbound mail. |
| Per-message size and recipient limits | Limited | 10 MB maximum per email including headers and attachments, and 50 recipients maximum across To, CC, and BCC. |
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Evidence
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- Verification
- Scribble researched these facts from the linked public sources.
- The owner has not manually confirmed every field.
- Last reviewed
- Primary source
- postmarkapp.com
Technical profile details
Record ID
c3851b1c-e8b7-4fa1-abcf-680ca4eeb94eCanonical URLhttps://profiles.scribble.network/listing/postmark-c3851b1c