What is MailSandbox?
MailSandbox helps teams catch and review test emails before they reach real people. Point your staging app to its SMTP endpoint, and every message gets captured instead of being delivered. You can preview the full HTML, inspect the raw source, organize messages by client and project, and share review links with clients without making them create an account. It also includes spam score checks, whitelabeled subdomains, and team-friendly inbox management. It works with any SMTP client, so setup is quick and there’s no SDK to install.
Key features
- Captures every email sent from staging environments.
- Shows full HTML previews with raw source access.
- Organizes inboxes by client and project automatically.
- Creates shareable review links without requiring accounts.
- Analyzes spam scores to spot deliverability problems.
- Supports whitelabeled subdomains with your own branding.
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