Head-to-head · Transactional Email Software
Postmark vs Infobip Email API
Postmark leads on 1 check, Infobip Email API on 1, and 1 is even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scorePostmark · 8.6/10
- Free planonly Postmark
- Most featuresInfobip Email API · 2 of 2
Postmark scores higher on our rubric for transactional email software: 8.6 against 7.7 out of 10; our editors rank them #2 and #5.
Postmark offers free plan; Infobip Email API doesn't. Infobip Email API offers event webhooks; Postmark doesn't publish it.
Postmark is the better fit for teams prioritizing message-stream separation. Infobip Email API is the better fit for enterprise teams needing inbound and compliance options.
- Postmark fits best
Teams prioritizing message-stream separation
- Infobip Email API fits best
Enterprise teams needing inbound and compliance options
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Side by side
| Feature | Postmark 8.6/10 Visit ↗ | Infobip Email API 7.7/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.6 | 7.7 |
| Ranking | #2 in Transactional Email Software | #5 in Transactional Email Software |
| Best for | Teams prioritizing message-stream separation | Enterprise teams needing inbound and compliance options |
| Pricing model | Free plan + paid | Paid |
| Starting price | $15/mo | Not published |
| Free plan | ✓ (best) | — |
| Free trial | — | — |
| Deployment | Cloud | Cloud, Browser extension |
| Platforms | Web | Web |
| Support | Live chat, Docs | Email, Tickets, Community, Docs |
| Compliance | GDPR, 2FA | SOC 2, ISO 27001, GDPR, HIPAA |
| Integrations | 12 integrations | 4 integrations |
| Built for | Solo, Small business, Mid-market, Enterprise | Mid-market, Enterprise |
| Features Postmark 1/2 · Infobip Email API 2/2 | ||
| Event webhooks | Not published | ✓ (best) |
| Dedicated IP option | ✓ | ✓ |
| Specs | ||
| Delivery methods | Not published | Both |
| Template options | Not published | Both |
| Delivery log retention | Not published | 48 days |
| Monthly send limit | 10000 emails/mo | Not published |
| Our review | ||
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| Our verdict | Postmark is an email delivery service for application teams sending transactional and broadcast messages through REST APIs or SMTP. It supports web and API access, official libraries for multiple programming languages and frameworks,… Read the review → |
Infobip Email API is a cloud service for programmatic transactional and marketing email. It is designed for developers and enterprise teams sending password resets, order confirmations, alerts, bulk messages, and other… Read the review → |
Strengths and trade-offs
Postmark — where it wins
- Separate transactional and broadcast message streams
- REST API, SMTP sending, inbound parsing, and event webhooks
- Reusable templates with previews, variables, and test sends
Where it doesn't
- Free plan allows only 100 emails per month
- Free plan does not allow overages
- Advanced inbound processing starts with the Pro plan
Infobip Email API — where it wins
- Supports both HTTP API and SMTP delivery
- Combines templates, tracking, webhooks, logs, and reporting
- Offers inbound processing, dedicated IPs, and IP pools
Where it doesn't
- Pricing varies by country, currency, and message volume
- No perpetual free plan
- May be more than needed for basic email sending
- Postmark8.6/10 · Free plan · paid from $15/mo
A focused email delivery service for teams separating transactional and broadcast traffic.
Visit PostmarkFull verdict → - Infobip Email API7.7/10 · 60-day trial
A programmable email service with delivery controls, inbound processing, and usage-based pricing.
Visit InfobipFull verdict →
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- Infobip Email API vs Plunk
All transactional email software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Last updated · How we research and update





