Mailfrom.dev is your sandbox SMTP server in the cloud 📨 Perfect for staging, QA, and debugging. Zero inboxes, zero spam. Catch and inspect emails your app sends, without ever hitting a real mailbox. Simple and dev-friendly 🚀
MailFrom.dev provides a cloud-based sandbox SMTP server for testing and debugging emails.
- for
- Developers and small teams needing safe email testing.
- pricing
- freemium · free trial
works withNode.jsPHPPython
Key features
6 features of MailFrom.dev
- Instant SMTP credentials — Get SMTP host, port and auth keys in seconds without approval queues.
- Full email inspection — View rendered HTML, plain-text, headers and download attachments for each captured email.
- Team workspaces — Create multiple teams with role-based access and separate inboxes.
- Smart search & filters — Search by subject, sender, content and filter by flags, status or attachments.
- Flexible retention — Keep captured emails from 1 to 10 days depending on the plan.
- Secure isolation — Each test environment is isolated with data-retention policies.
Use cases
- Validate email templates and rendering before sending to real users.
- Debug SMTP delivery issues in staging or QA environments.
- Collaborate on email testing across a development team with shared inboxes.
- Inspect attachments and headers to ensure compliance with email standards.
MailFrom.dev pricing
- Free€0.001 user · 100 emails / month · 20 inbox capacity · 5 MB email size
- Individual€1.99/monthbilled annually or €2.99 month4 users · 400 emails / month · 40 inbox capacity · 5 MB email size
- Business€9.99/monthbilled annually or €14.99 mont20 users · 1200 emails / month · 200 inbox capacity · 10 MB email size
MailFrom.dev vs alternatives
 MailFrom.dev |  SendGrid |  Maildroppa |  GetTestMail | |
|---|---|---|---|---|
| Best for | Sandbox SMTP for dev environments | Production email delivery | Email marketing automation | Temporary email addresses |
| Pricing | Freemium | Subscription | Free | Subscription |
| DevHunt upvotes | 0 | 0 | 27 | 23 |
| Launched | Jan 2026 | — | Oct 2024 | Jan 2023 |
- MailFrom.dev vs SendGrid: SendGrid focuses on high-volume delivery, not isolated testing environments.
- MailFrom.dev vs Maildroppa: Maildroppa is an email marketing/automation platform, not a dev-focused testing sandbox.
- MailFrom.dev vs GetTestMail: GetTestMail provides temporary disposable inboxes, not a full SMTP sandbox with team features.
MailFrom.dev FAQ
Do I need a credit card to start using MailFrom.dev?+
No, the free tier is available without a credit card and includes a 14-day free trial for paid plans.
Can I use MailFrom.dev with any programming language?+
Yes, it works with any language or framework that supports standard SMTP.
How long are captured emails retained?+
Retention depends on the plan, ranging from 1 day (Free) up to 10 days (Business).
Is there a limit on email size?+
Free and Individual plans allow up to 5 MB per email, while Business allows up to 10 MB.
Can I collaborate with teammates?+
Yes, you can create multiple teams, assign roles and share inboxes across members.
What happens if I exceed my monthly email quota?+
Emails beyond the quota are not captured until the next billing cycle; you can upgrade to a higher plan.
Summarized by DevHunt from mailfrom.dev · Oct 6, 2026. Details may change; check the official site.
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