Plunk vs Mailgun
A detailed comparison to help you choose between Plunk and Mailgun.
Quick Verdict
3.7/5
Plunk
0 reviews
3.7/5
Mailgun
0 reviews
Both Plunk and Mailgun are equally rated at 3.7/5. Open-source (AGPL-3.0) email platform for transactional emails, newsletters and automations. Free for 1,000 emails/month, then $0.001 per email; self-hostable via Docker. EU-hosted, SMTP + REST API, unlimited contacts. Mailgun is a developer-focused email API service owned by Sinch. Inbound email parsing, email validation API, and detailed analytics. Popular for startups building email features into their apps.
Plunk Transactional email infrastructure built for developers | Mailgun Email API for developers — by Sinch | |
|---|---|---|
| Overview | ||
| Rating | 3.7 (0 reviews) | 3.7 (0 reviews) |
| Pricing model | freemium: free 1,000 emails/month, then $0.001 per email pay-as-you-go | freemium |
| Starting price | Free tier available | Free tier available |
| Best for | Indie hackers and SaaS teams wanting one affordable, self-hostable system for transactional email, newsletters and triggered flows — especially EU-based ones | Developers and SaaS teams sending transactional email from applications who also need inbound email parsing, validation, and deliverability tooling |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Tags | ||
| Tags | free tieropen sourceself hostableapi access | free tierapi access |
| Visit Plunk → | Visit Mailgun → | |
Plunk
Pros
- + Dead-simple pricing: free at 1,000 emails/month, then $0.001/email with no base fee and per-category spend caps
- + AGPL-3.0 open source with free self-hosting via Docker — full data ownership and an exit path
- + Transactional, campaigns, workflows and inbound email in one product with unlimited contacts on every plan
- + EU-hosted and GDPR-focused, with DKIM/SPF/DMARC configured automatically on custom domains
- + SMTP relay plus a language-agnostic REST API; email validation and real-time analytics built in
Cons
- - No published uptime SLA or deliverability guarantees; sending IP reputation unproven at scale
- - Small team and young product (2022) versus incumbents with a decade of sending history
- - Hosted platform is EU-only; no dedicated IP or managed IP warm-up offering (the DB's IP warming claim is wrong)
- - AGPL-3.0 copyleft matters if you embed the software in a commercial product
Mailgun
Pros
- + Inbound email parsing on every plan, including Free — the strongest developer-side feature in this category
- + Published four-tier pricing with explicit overage rates ($15/$35/$90 per month tiers)
- + Credit-backed 99.99% availability SLA on API, SMTP, and outbound delivery
- + US or EU (Ireland) sending regions per account, with GDPR/HIPAA/SOC/ISO 27001 compliance paperwork
Cons
- - One day of log retention on Free and Basic — debugging old delivery issues is impossible without exporting logs
- - Chat and phone support only on the $90/month Scale tier; support quality under Sinch ownership draws community criticism
- - Dedicated IPs cost extra below high volumes (third-party listings quote ~$59/IP/month)
- - US operating entity under a Swedish parent — CLOUD Act exposure remains for privacy-sensitive EU buyers
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