Mailgun vs Postmark
Mailgun vs Postmark, compared side by side on 9 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Mailgun is on 55/100 and Postmark on 9/100.
Where each one leads
Mailgun
- our overall score: 55/100 against 9/100
- agent readiness: 41/100 against 35/100
Postmark
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Mailgun | Postmark |
|---|---|---|
| What it is | Developer-focused email API and deliverability platform for sending, receiving, and tracking emails. | Reliable email delivery service for transactional and marketing emails. |
| Category | SaaS, Email Marketing, Developer Tools | Email Delivery, Transactional Email, Marketing Automation, SaaS |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Software |
| Founded | 2010 | Not published |
| Headquarters | San Antonio, United States | Not published |
| Status | Active | Active |
Size, funding and growth
| Measure | Mailgun | Postmark |
|---|---|---|
| Employees | 194 | Not published |
| Total funding | $50.0M | Not published |
| Latest round | Series B | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Mailgun | Postmark |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 55/100 | 9/100 |
| Traction | 58/100 | Not published |
| Team | 30/100 | Not published |
| Search visibility | 14/100 | 17/100 |
| Quality | 68/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | D (41/100) | F (35/100) |
| Domain ratingLink authority, 0-100 | 86/100 | Not published |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Mailgun | Postmark |
|---|---|---|
| Hosting | Not detected | Google Cloud |
| CDN | Cloudflare | Not detected |
| CMS | WordPress | Not detected |
| Frameworks | Jquery, Tailwind CSS, Bootstrap | Not detected |
| Analytics | Not detected | Google Tag Manager |
| Support stack | Zendesk | Not detected |
| Open source | Yes | No |
Mailgun vs Postmark: common questions
Which is better, Mailgun or Postmark?
On our 0-100 score Mailgun rates higher (55/100 against 9/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 9 data points above: read the rows that match what you are buying for.
How do Mailgun and Postmark compare on the numbers?
Mailgun leads on our overall score (55/100 against 9/100), agent readiness (41/100 against 35/100).
Read the full Mailgun review and pricing or the Postmark review and pricing. You can also browse other Mailgun alternatives we track.