Mailgun is an established email API owned by Sinch. Truncus is an execution layer with EU data residency, delivery guarantees, synchronous delivery confirmation, and lower pricing.
Mailgun starts at $35/mo. Truncus starts at $19/mo with 50K emails, EU-resident sending on AWS SES Ireland (eu-west-1), and a permanent free tier of 3,000 emails/month.
Truncus costs nearly half of Mailgun and includes delivery guarantees and synchronous delivery confirmation at no extra cost.
Truncus Pro
$19/mo
50,000 emails included
+ delivery guarantees + sync confirmation
Mailgun Flex
$35/mo
Pay-per-use after base
Single provider, no guarantees
Side-by-side comparison of capabilities. Where we don't have a feature, we say so.
| Feature | Truncus | Mailgun |
|---|---|---|
| Owned by | Independent (Van Moose, NL) | Sinch / Pathwire (US) |
| Data residency | EU default — AWS SES Ireland (eu-west-1) | US or EU (separate endpoint) |
| Delivery guarantees | best_effort / at_least_once / exactly_once | Best effort only |
| Synchronous delivery confirmation | Yes (send_sync) | No |
| Operations API (durable sends) | Yes | No |
| Pre-send validation | Confidence score, spam check, domain health | No |
| Post-send intelligence | Failure analysis, recommended actions | Event logs |
| Global message identity | One ID across retries and providers | Message-Id per send |
| Content-based deduplication | Automatic (10-min window) | No |
| Account reputation engine | Auto-throttle on high bounce/complaint | Manual monitoring |
| Kill switch | Instant send suspension via API | No |
| Inbound email | Coming soon | Inbound routing |
| Email validation | Pre-send validation | Separate validation API (paid add-on) |
| MCP server | 8 tools (npm) | No |
| CLI | @vanmoose/truncus-cli | No |
| Mailing lists | No | Yes |
| Paid pricing | $19/mo (50K emails) | $35/mo (Flex) |
| Free tier | 3,000 emails/mo | Trial only (no permanent free tier) |
Comparison based on publicly available information as of April 2026. Mailgun is a trademark of Sinch / Pathwire.
Truncus is the right pick when:
Mailgun is the better choice when:
No credit card required. EU-resident sending with delivery guarantees at nearly half the price of Mailgun.
Create free accountFree tier includes 3,000 emails/month and 1 sending domain.