# Postmark: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 6 judge labels across 2 categories by 6 of 14 models. Page: https://www.gane.ai/index/gtm/vendors/postmark

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [Email deliverability and testing tools](https://www.gane.ai/index/gtm/marketing/email-deliverability-and-testing/index.md) | 2% | 16 | 0% | 5 |
| [Ecommerce marketing](https://www.gane.ai/index/gtm/marketing/ecommerce-marketing/index.md) | 0% | 57 | 0% | 1 |

## What the models said for it

- "Best overall for limited budget + simple needs: Postmark — very straightforward pricing, strong deliverability focus, and a free tier to test it." (GPT-5.4 mini, Email deliverability)
- "Use certified aggregators (like Twilio, Postmark, or established platforms like Attentive/Octane)" (Qwen 3.7 Flash, Ecommerce marketing)
- "prioritize reliability and low-latency tools like SendGrid or Postmark with add-on monitoring" (Grok 4.20, Email deliverability)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 1 | 0 | 0 | 0 | 1 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 0 | 0 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 0 | 1 | 0 | 0 | 1 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 0 | 0 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 1 | 0 | 0 | 1 |
| Kimi K2 | 0 | 0 | 1 | 0 | 1 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 0 | 0 |
| MiniMax M2.5 | 0 | 0 | 1 | 0 | 1 |
| GPT-6 Luna | 0 | 0 | 0 | 0 | 0 |
| Muse Glimmer 30B | 0 | 0 | 1 | 0 | 1 |

## Sources returned with these answers

The sites and pages cited by the answers that named Postmark, from 13 of the 20 answers that named it (only the models that return a source list).

### Domains cited

- mailgun.com: 6
- glockapps.com: 4
- postmarkapp.com: 4 (its own site)
- smartlead.ai: 4
- omnisend.com: 3
- sequenzy.com: 3
- toolradar.com: 3
- amplemarket.com: 2
- autospf.com: 2
- g2.com: 2

### Pages cited

- https://mailgun.com/blog/email/what-to-look-for-in-a-transactional-email-provider: 4
- https://glockapps.com/: 3
- https://omnisend.com/blog/email-deliverability-tools: 3
- https://postmarkapp.com/pricing: 3
- https://sequenzy.com/email-marketing-for/soc2-compliant-saas: 3
- https://smartlead.ai/blog/email-deliverability-services: 3
- https://toolradar.com/best/email-deliverability: 3
- https://amplemarket.com/blog/best-email-deliverability-tools: 2

## The company

ActiveCampaign; http://www.activecampaign.com/; Chicago, United States; founded 2003. From Wikidata, fetched 2026-09-14.

## In its own words

What Postmark's own pages state, read 2026-10-06. Stated by the vendor, not checked by the index.

- Positioning: Postmark is a fast and reliable transactional email service that delivers your application's emails on time, every time. (https://postmarkapp.com/)
- For: developers (https://postmarkapp.com/)
- Price stated: $15/month for 10,000 emails (https://postmarkapp.com/)
- Starting price: 15 (https://postmarkapp.com/)
- Free plan or trial: Start free trial (https://postmarkapp.com/)
- Certifications: GDPR, SOC 1 Type II, PCI DSS
- Customers named: Paddle, Indie Hackers, Faire.com, IKEA, litmus, desk, minecraft, livestream

## What it publishes

Every page postmarkapp.com exposes, read 2026-09-29: 1024 addresses. By kind, pages and the last 90 days:

- blog: 301 pages, 3 in the last 90 days, latest 2026-09-08
- case study: 30 pages, 0 in the last 90 days, latest 2025-10-08
- webinar or virtual event: 13 pages, 0 in the last 90 days, latest 2025-12-08
- conference or event: 1 pages, 0 in the last 90 days, latest undated
- report or ebook: 32 pages, 0 in the last 90 days, latest 2017-10-19
- comparison: 13 pages, 0 in the last 90 days, latest 2025-03-27
- glossary or explainer: 19 pages, 0 in the last 90 days, latest 2026-05-11
- podcast or video: 26 pages, 0 in the last 90 days, latest 2019-09-05
- news or press: 2 pages, 0 in the last 90 days, latest undated
- Recent: 2026-09-08 blog: Restrict email sending api with ip allowlisting https://postmarkapp.com/blog/restrict-email-sending-api-with-ip-allowlisting
- Recent: 2026-07-21 blog: The postmark mcp server one year later from 4 tools to 24 https://postmarkapp.com/blog/the-postmark-mcp-server-one-year-later-from-4-tools-to-24
- Recent: 2026-07-14 blog: Sending bulk email in python prioritize practices that get your mail delivered https://postmarkapp.com/blog/sending-bulk-email-in-python-prioritize-practices-that-get-your-mail-delivered
- Recent: 2026-06-30 blog: Automate python emails with attachments that get delivered https://postmarkapp.com/blog/automate-python-emails-with-attachments-that-get-delivered
- Recent: 2026-05-11 glossary or explainer: 1010 how can i cancel my account https://postmarkapp.com/support/article/1010-how-can-i-cancel-my-account
- Recent: 2026-04-29 blog: Sending mission critical emails in python smtp or api https://postmarkapp.com/blog/sending-mission-critical-emails-in-python-smtp-or-api

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/gtm.