Email APIs · side by side
Mailgun vs Postmark
Compare Mailgun, Postmark by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
100K
Mailgun
$90 / mo
Scale · 100K emails
Postmark
$126 / mo
Platform · 100K emails
Listed USD plan fees and tracked usage only. Unlisted compute, transfer, extras, taxes and contract terms are excluded. Custom or unsupported plan usage is not estimated.
Email APIs overview & pricing
| Email APIs | Mailgun | Postmark |
|---|---|---|
| Provider | Sinch | ActiveCampaign |
| Billing unit | emails | emails |
| Plan at selected usage | Scale | Platform |
| Monthly estimate | $90/mo | $126/mo |
| Workload | 100K emails | 100K emails |
| Free access | 100 emails/day | 100 emails/mo |
| Published plans | Free, Basic, Foundation, Scale | Free, Basic, Pro, Platform |
| Prices checked | Not listed | Not listed |
Provider
- Mailgun
- Sinch
- Postmark
- ActiveCampaign
Billing unit
- Mailgun
- emails
- Postmark
- emails
Plan at selected usage
- Mailgun
- Scale
- Postmark
- Platform
Monthly estimate
- Mailgun
- $90/mo
- Postmark
- $126/mo
Workload
- Mailgun
- 100K emails
- Postmark
- 100K emails
Free access
- Mailgun
- 100 emails/day
- Postmark
- 100 emails/mo
Published plans
- Mailgun
- Free, Basic, Foundation, Scale
- Postmark
- Free, Basic, Pro, Platform
Prices checked
- Mailgun
- Not listed
- Postmark
- Not listed
Email APIs monthly cost
Mailgun: $90Postmark: $126
Cost by emails
Cost curve data
| emails | Mailgun | Postmark |
|---|---|---|
| 0 | $0 | $0 |
| 25K | $35 | $36 |
| 50K | $35 | $66 |
| 100K | $90 | $126 |
| 200K | $200 | $246 |
| 500K | $530 | $606 |
| 1M | $1,080 | $1,206 |
0
- Mailgun
- $0
- Postmark
- $0
25K
- Mailgun
- $35
- Postmark
- $36
50K
- Mailgun
- $35
- Postmark
- $66
100K
- Mailgun
- $90
- Postmark
- $126
200K
- Mailgun
- $200
- Postmark
- $246
500K
- Mailgun
- $530
- Postmark
- $606
1M
- Mailgun
- $1,080
- Postmark
- $1,206
Email APIs feature comparison
| Email APIs | Mailgun | Postmark |
|---|---|---|
| Sending methods | Not listed | Not listed |
| Inbound processing | Not listed | Not listed |
| Sending domains | Not listed | Not listed |
| Activity retention | Not listed | Not listed |
| Webhooks & events | Not listed | Not listed |
| Dedicated IP | Not listed | Not listed |
| Single sign-on | Not listed | Not listed |
| Support | Not listed | Not listed |
Sending methods
- Mailgun
- Not listed
- Postmark
- Not listed
Inbound processing
- Mailgun
- Not listed
- Postmark
- Not listed
Sending domains
- Mailgun
- Not listed
- Postmark
- Not listed
Activity retention
- Mailgun
- Not listed
- Postmark
- Not listed
Webhooks & events
- Mailgun
- Not listed
- Postmark
- Not listed
Dedicated IP
- Mailgun
- Not listed
- Postmark
- Not listed
Single sign-on
- Mailgun
- Not listed
- Postmark
- Not listed
Support
- Mailgun
- Not listed
- Postmark
- Not listed
Which email providers fit your needs?
How to compare email providers
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Browse Email APIs pricing