Head-to-head · SMTP Relay Services
SocketLabs vs Mailgun
SocketLabs leads on 1 check, Mailgun on 1, and 0 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreSocketLabs · 7.4/10
- Free planonly Mailgun
SocketLabs scores higher on our rubric for smtp relay services: 7.4 against 6.6 out of 10; our editors rank them #4 and #8.
Mailgun offers free plan; SocketLabs doesn't. SocketLabs leads on monthly send limit: 40000 emails/mo versus 10000 emails/mo.
SocketLabs is the better fit for mid-volume senders needing inbound parsing. Mailgun is the better fit for developers needing established email infrastructure.
- SocketLabs fits best
Mid-volume senders needing inbound parsing
- Mailgun fits best
Developers needing established email infrastructure
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Side by side
| Feature | SocketLabs 7.4/10 Visit ↗ | Mailgun 6.6/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.4 | 6.6 |
| Ranking | #4 in SMTP Relay Services | #8 in SMTP Relay Services |
| Best for | Mid-volume senders needing inbound parsing | Developers needing established email infrastructure |
| Pricing model | Paid | Free plan + paid |
| Starting price | $39.95/mo | Not published |
| Free plan | — | ✓ (best) |
| Free trial | — | — |
| Free trial length | 30 days · no card needed | 30 days |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Features SocketLabs 0/3 · Mailgun 0/3 | ||
| Inbound email parsing | Not published | Not published |
| Event webhooks | Not published | Not published |
| Subaccounts | Not published | Not published |
| Specs | ||
| Monthly send limit | 40000 emails/mo (best) | 10000 emails/mo |
| Dedicated IP option | Not published | Not published |
| Email log retention | Not published | Not published |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | SocketLabs is an email delivery platform for developers, IT teams, and organizations sending transactional or marketing email. It supports SMTP relay sending and an HTTP injection API for outbound messages, while its inbound email parsing… Read the review → |
Mailgun is an email delivery platform for developers, marketers, and product teams. It supports transactional and marketing messages through RESTful email APIs and SMTP relay, with inbound email routing, delivery-event webhooks, reusable… Read the review → |
Strengths and trade-offs
SocketLabs — where it wins
- Inbound email parsing delivers messages as JSON to HTTP endpoints.
- SMTP relay, injection API, webhooks, templates, and reporting in one platform.
- Dedicated IP options and plans for senders above 1M emails per month.
Where it doesn't
- No permanent free plan is available.
- The Core plan includes only 10 days of insight history.
- Few verified integrations limit prebuilt ecosystem connections.
Mailgun — where it wins
- Combines RESTful APIs and SMTP relay for email delivery
- Adds inbound routing, webhooks, templates, analytics, and suppression tools
- Scale includes dedicated IP pools, SAML SSO, and live support
Where it doesn't
- Free plan limits sending to 100 emails per day
- Dedicated IP pools are listed only on the Scale plan
- Log retention ranges from five days on Foundation to 30 on Scale
- SocketLabs7.4/10 · From $39.95/mo · 30-day trial
A capable relay for mid-volume teams that need inbound email workflows.
Visit SocketLabsFull verdict → - Mailgun6.6/10 · Free plan · 30-day trial
Developer-focused email delivery with SMTP, APIs, inbound routing, and delivery analytics.
Visit MailgunFull verdict →
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All SMTP relay services comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Last updated · How we research and update







