MailjetDesign, deliver, and automate marketing and transactional emails together
vs
PostmarkThe email delivery service that people actually like
Comparison · Email Marketing · weekly run Nov 2
Mailjet vs Postmark
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Mailjet is the stronger AI pick in Email Marketing: it has a visibility score of 3.8 versus 1.9 for Postmark, and ranks ahead in 0% of the answers that name both.
Choose Mailjet if…
- You want the brand AI engines rank higher (3.8 vs 1.9)
- You want a lower entry price ($9 vs $15)
- You need ISO 27001 or ISO 27701 or SOC 2 or CCPA or PCI DSS or CSA STAR Level 1 or HIPAA or Certified Senders Alliance coverage
- Flat tiers pricing suits your budget better than usage-based
Choose Postmark if…
- Usage-based pricing suits your budget better than flat tiers
- recommended for transactional email
- suited to reliable transactional email
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Mailjet | Postmark |
|---|---|---|
| Visibility score | 3.8% | 1.9% |
| Change vs last week | New | New |
| Rank in Email Marketing | #19 | #29 |
| Share of voice | 1.7% | 0.9% |
| Mentions this run | 9 | 5 |
| Positive in AI answers | 0% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Mailjet 0pp · Postmark 0pp over 0 weekly runs.
Engine by engine
Mailjet leads on 1 of 3 engines
ChatGPT
AI Mode
Perplexity
MailjetPostmark
Head to head in AI answers
1 engine answers name both brands
0Mailjet ranked higher
1Postmark ranked higher
| Prompt | Engine | Mailjet | Postmark |
|---|---|---|---|
| Best email marketing platform for startups | Perplexity | #9 | #8 |
Features, pricing & fit
| Dimension | Mailjet | Postmark |
|---|---|---|
| Pricing model | Flat tiers | Usage-based |
| Entry price | Free; paid from $9 / mo | Free; paid from $15 / mo |
| Free plan | Yes | Yes |
| Deployment | Cloud-hosted in EU data centers | Cloud |
| Integrations | 100+ | — |
| Compliance | ISO 27001, ISO 27701, SOC 2, GDPR, CCPA, PCI DSS, CSA STAR Level 1, HIPAA, Certified Senders Alliance | GDPR |
| Support | Online support, Priority support (Premium plan), Phone and chat support (from 50k plan), Dedicated Technical Account Manager (Custom plan) | Contact form |
| Founded | 2010 | 2010 |
| Headquarters | Paris, France | — |
| Employees | 51–200 | — |
| Funding | Series Unknown (investment by Entrepreneur Venture, amount undisclosed) | — |
| Best for | Marketing and development teams that want marketing and transactional email on one platform | Developers and product teams that need reliable transactional email |
Plans side by side
Mailjet
Free$0month
Starter$9month (8,000 emails/month)
Essential$19month (15,000 emails/month)
Premium$29month (15,000 emails/month)
CustomCustomcustom quote
Postmark
Free$0month
Basic$15month
Pro$16.5month
Platform$18month
High volumeCustomcustom
Pros and cons
Themes from the AI answers that mention each brand
Mailjet
- straightforward annual pricing discount
Postmark
- recommended for transactional email
- suited to reliable transactional email
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Mailjet vs Postmark”, https://slateindex.ai/compare/mailjet-vs-postmark, data of Nov 2, 2026. Licence: CC BY 4.0.