Email APIs · side by side
Mailgun vs Plunk
Compare Mailgun, Plunk by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
100K
Mailgun
$90 / mo
Scale · 100K emails
Plunk
Custom / not listed
No priced plan for this volume · 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 | Plunk |
|---|---|---|
| Provider | Sinch | Plunk |
| Billing unit | emails | emails |
| Plan at selected usage | Scale | No priced plan for this volume |
| Monthly estimate | $90/mo | Custom / not listed |
| Workload | 100K emails | 100K emails |
| Free access | 100 emails/day | Developer free allowance |
| Published plans | Free, Basic, Foundation, Scale | Pay as you grow, Free forever |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Mailgun
- Sinch
- Plunk
- Plunk
Billing unit
- Mailgun
- emails
- Plunk
- emails
Plan at selected usage
- Mailgun
- Scale
- Plunk
- No priced plan for this volume
Monthly estimate
- Mailgun
- $90/mo
- Plunk
- Custom / not listed
Workload
- Mailgun
- 100K emails
- Plunk
- 100K emails
Free access
- Mailgun
- 100 emails/day
- Plunk
- Developer free allowance
Published plans
- Mailgun
- Free, Basic, Foundation, Scale
- Plunk
- Pay as you grow, Free forever
Prices checked
- Mailgun
- 2026-10-08
- Plunk
- 2026-10-08
Email APIs monthly cost
Mailgun: $90Plunk: Not priced
Cost by emails
Cost curve data
| emails | Mailgun | Plunk |
|---|---|---|
| 0 | $0 | $0 |
| 25K | $35 | Not priced |
| 50K | $35 | Not priced |
| 100K | $90 | Not priced |
| 200K | $200 | Not priced |
| 500K | $530 | Not priced |
| 1M | $1,080 | Not priced |
0
- Mailgun
- $0
- Plunk
- $0
25K
- Mailgun
- $35
- Plunk
- Not priced
50K
- Mailgun
- $35
- Plunk
- Not priced
100K
- Mailgun
- $90
- Plunk
- Not priced
200K
- Mailgun
- $200
- Plunk
- Not priced
500K
- Mailgun
- $530
- Plunk
- Not priced
1M
- Mailgun
- $1,080
- Plunk
- Not priced
Email APIs feature comparison
| Email APIs | Mailgun | Plunk |
|---|---|---|
| Custom sending domains | 1,000 | Not listed |
| Log retention | 30 days | Not listed |
| Message retention | Up to 7 days | Not listed |
| Inbound routes | Full access | Not listed |
| Email validations | 5,000 included | Not listed |
| SAML SSO | Not listed | |
| Phone & chat support | Not listed |
Custom sending domains
- Mailgun
- 1,000
- Plunk
- Not listed
Log retention
- Mailgun
- 30 days
- Plunk
- Not listed
Message retention
- Mailgun
- Up to 7 days
- Plunk
- Not listed
Inbound routes
- Mailgun
- Full access
- Plunk
- Not listed
Email validations
- Mailgun
- 5,000 included
- Plunk
- Not listed
SAML SSO
- Mailgun
- Plunk
- Not listed
Phone & chat support
- Mailgun
- Plunk
- Not listed
Which email providers fit your needs?
Mailgun features & plan notes
- Email validation
- Inbound routing
- EU region
- SAML SSO
- 5,000 email validations
- Dedicated IP pools
- 30 days log retention
- Extra emails from $1.10 / 1,000
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