Mailgun is a powerful transactional API — but it's built for sending only, and getting started means accounts, API keys, and usage tiers. MailDog gives you a free SMTP sandbox to test in one click, plus full email hosting on your own domain when you go live.
Mailgun sends. MailDog tests, sends, and hosts your inbox.
| Feature | MailDog | Mailgun |
|---|---|---|
| Free SMTP sandbox for testing | ||
| Use the sandbox without signing up | ||
| SMTP for sending | ||
| Custom domain email hosting | ||
| Full IMAP mailboxes | ||
| Automatic SPF, DKIM & DMARC | ||
| Real-time inbox & email inspection |
Host real mailboxes on your domain with full SMTP & IMAP — not just an outbound API.
Capture and inspect outgoing email in a free sandbox so you catch problems before real users see them.
Clear plans for hosting and sending instead of metered tiers that scale unpredictably with volume.
Start with a free SMTP sandbox, then host email on your own domain.
Create Free Account