--- title: Postmark slug: postmark url: "https://toolweight.com/tools/postmark" homepage: "https://postmarkapp.com" categories: email-sending-apis last_verified: 2026-11-07 dataset_version: 0738be72 license: CC-BY-4.0 --- # Postmark > Transactional-only sender with the best-policed shared IP pool in the category. - Fifteen years optimising for transactional mail arriving fast and landing in the inbox - Strictly separates transactional and broadcast streams, and vets accounts before sending - Removes customers whose practices threaten the pool - Costs several times competitors, keeps forty-five days of searchable activity ## Identity | | | | --- | --- | | Name | Postmark | | Company | ActiveCampaign | | One-liner | Transactional-only sender with the best-policed shared IP pool in the category. | | Site | https://postmarkapp.com | | Docs | https://postmarkapp.com/developer | | Founded | 2010 | | Funding | Acquired (ActiveCampaign, 2022) | | Compared in | 1 | ## Where it is compared ### [Email APIs](https://toolweight.com/compare/email-sending-apis) Ranked **#1 of 13** on default weights. | Field | Value | Confidence | Verified | Source | Note | Permalink | | --- | --- | --- | --- | --- | --- | --- | | Time to first send | 4h | Community-reported | - | - | Postmark reviews the use case before enabling sending to unverified recipients; usually hours, occasionally next business day. | https://toolweight.com/compare/email-sending-apis#postmark--time_to_first_send | | Product scope | transactional-first | Inferred | - | - | Broadcast streams exist but are deliberately kept separate from transactional. | https://toolweight.com/compare/email-sending-apis#postmark--product_scope | | Inbound parsing | ● | Vendor-claimed | 2026-05-20 | https://postmarkapp.com/developer/user-guide/inbound | - | https://toolweight.com/compare/email-sending-apis#postmark--inbound_parsing | | Event webhooks | delivered, opened, clicked, bounced, complained, unsubscribed, inbound | Vendor-claimed | 2026-05-20 | https://postmarkapp.com/developer/webhooks/webhooks-overview | - | https://toolweight.com/compare/email-sending-apis#postmark--event_webhooks | | Hosted templates | visual-editor | Inferred | - | - | Drag-and-drop builder plus a well-regarded set of open-source starter templates. | https://toolweight.com/compare/email-sending-apis#postmark--hosted_templates | | React Email / MJML | mjml, handlebars | Inferred | - | - | Templates use a Mustache-style syntax; MJML is documented as an authoring path. | https://toolweight.com/compare/email-sending-apis#postmark--react_email_mjml | | Log retention | 45d | Community-reported | - | - | 45-day activity retention is Postmark's long-standing default and the best here. | https://toolweight.com/compare/email-sending-apis#postmark--log_retention | | Throughput ceiling | - | Unknown | - | - | No published figure. | https://toolweight.com/compare/email-sending-apis#postmark--throughput_ceiling | | Multi-domain sending | ● | Inferred | - | - | - | https://toolweight.com/compare/email-sending-apis#postmark--multi_domain | | Data residency | us | Inferred | - | - | US-hosted; no EU data region as of this pass. | https://toolweight.com/compare/email-sending-apis#postmark--data_residency | | Shared pool quality | 5 | Inferred | - | - | The most aggressively policed pool in the category, transactional-only, with customers removed for bad practice. | https://toolweight.com/compare/email-sending-apis#postmark--shared_pool_quality | | IP warmup | ● | Inferred | - | - | Managed by Postmark, but they require sustained volume before selling you an IP. | https://toolweight.com/compare/email-sending-apis#postmark--ip_warmup | | DKIM/DMARC friction | 2 | Inferred | - | - | Clear records and verification, plus a separate custom return-path CNAME. | https://toolweight.com/compare/email-sending-apis#postmark--dkim_dmarc_friction | | BIMI | ● | Inferred | - | - | - | https://toolweight.com/compare/email-sending-apis#postmark--bimi_support | | Suppression list | ● | Inferred | - | - | Per-message-stream suppressions, readable over the API. | https://toolweight.com/compare/email-sending-apis#postmark--suppression_management | | Bounce handling | ● | Inferred | - | - | - | https://toolweight.com/compare/email-sending-apis#postmark--bounce_complaint_handling | | Price / 1k emails | $1.5/1k | Vendor-claimed | 2026-05-20 | https://postmarkapp.com/pricing | $15/mo for 10,000 emails; the rate falls at higher tiers. | https://toolweight.com/compare/email-sending-apis#postmark--price_per_1k | | Free tier | 100 emails/mo | Vendor-claimed | 2026-11-06 | https://postmarkapp.com/pricing | - | https://toolweight.com/compare/email-sending-apis#postmark--free_tier | | Dedicated IP | $50/mo | Vendor-claimed | 2026-11-06 | https://postmarkapp.com/pricing | - | https://toolweight.com/compare/email-sending-apis#postmark--dedicated_ip_cost | | Pricing model | volume-tiers | Inferred | - | - | - | https://toolweight.com/compare/email-sending-apis#postmark--pricing_model | | MCP server | ◐ | Community-reported | - | - | No first-party server. A malicious third-party postmark-mcp npm package impersonated one in 2025, check the publisher. | https://toolweight.com/compare/email-sending-apis#postmark--mcp_server | | llms.txt docs | ● | Measured by Toolweight | 2026-11-07 | https://postmarkapp.com/llms.txt | - | https://toolweight.com/compare/email-sending-apis#postmark--llms_txt_docs | | Funding | acquired | Community-reported | - | - | Wildbit, Postmark's parent, was acquired by ActiveCampaign in 2022. | https://toolweight.com/compare/email-sending-apis#postmark--funding_stage | | Positioning | "Your emails, delivered." Sells discipline rather than features, and unusually, the claim matches the product. | Inferred | - | - | - | https://toolweight.com/compare/email-sending-apis#postmark--positioning | | GA year | 2010 | Inferred | - | - | - | https://toolweight.com/compare/email-sending-apis#postmark--ga_year | **Verdict.** The deliverability benchmark, with pool quality as a deliberate business decision, expensive and worth it for mail that must arrive. ## Alternatives - [AhaSend](https://toolweight.com/tools/ahasend), Small indie transactional API competing on price and instant signup. - [Amazon SES](https://toolweight.com/tools/amazon-ses), The cheapest way to send email at scale, and the least finished product. - [Brevo](https://toolweight.com/tools/brevo), EU-hosted marketing platform with a competent transactional API attached. - [Loops](https://toolweight.com/tools/loops), Lifecycle and marketing email for SaaS, priced on contacts rather than sends. - [MailerSend](https://toolweight.com/tools/mailersend), Transactional sibling of MailerLite, bootstrapped and cheap at mid volume. - [Mailgun](https://toolweight.com/tools/mailgun), Long-running transactional API with strong routing and inbound handling. - [Mailtrap](https://toolweight.com/tools/mailtrap), Email testing sandbox that grew a production sending product. - [Plunk](https://toolweight.com/tools/plunk), Open-source email console you self-host on top of your own AWS SES account. - [Resend](https://toolweight.com/tools/resend), Developer-first email API built around React Email components. - [Scaleway TEM](https://toolweight.com/tools/scaleway-tem), EU-sovereign transactional email from Scaleway, deliberately minimal. - [SendGrid](https://toolweight.com/tools/sendgrid), The incumbent: enormous scale, enormous shared pool, everything bolted on. - [SparkPost](https://toolweight.com/tools/sparkpost), High-volume sender with deep analytics, now folded into Bird's platform. ## Licence and attribution Data from Toolweight (https://toolweight.com), licensed CC-BY-4.0. - Licence: [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/) - Canonical HTML: https://toolweight.com/tools/postmark - Machine-readable: https://toolweight.com/tools/postmark.md · https://toolweight.com/api/v1 · https://toolweight.com/mcp - Toolweight takes no affiliate revenue and sells no placements.