mailtrap-testing-with-sandbox — independently scanned and version-tracked by SaferSkills.
SaferSkills independently audited mailtrap-testing-with-sandbox (Agent Skill) and scored it 100/100 (green). The audit ran 55 deterministic rules across Security, Supply Chain, Maintenance, Transparency, and Community; it found 0 high-severity and 0 lower-severity findings. The full rule-by-rule trace and per-finding evidence are below. Free, methodology-open.
Findings & checks · 0 flagged
Every scanned point with the score it earned and what moved between them.
First recorded scan — no prior version to compare against.
The primary manifest — the file an agent reads to learn what this artifact does.
Email Sandbox captures mail in sandboxes (test inboxes)—a test environment where messages are not delivered to real recipients. You can send to sandboxes using our SDKs, HTTP API, or SMTP, depending on your needs.
Before generating SDK code: read the README of the relevant SDK repository (see mailtrap-sending-emails) for current sandbox mode options, inbox id, and constructor flags. Do not rely on memory.
Related skills: mailtrap-sending-emails (live sending hosts and streams).
mailtrap-sending-emails).| Service | Send mail URL | Auth header examples |
|---|---|---|
| Email Testing API (REST) | https://sandbox.api.mailtrap.io/api/send/{inbox_id} | Authorization: Bearer $MAILTRAP_SANDBOX_API_TOKEN |
Sandbox uses a separate token ($MAILTRAP_SANDBOX_API_TOKEN, Testing/Sandbox scope) — never reuse the live $MAILTRAP_API_TOKEN. The account_id in the example endpoints below is resolved at runtime via GET https://mailtrap.io/api/accounts. Store tokens in environment variables or a secrets manager.
Use SMTP when testing apps that already send mail via SMTP (just update the host, port, and credentials). Use the HTTP API when building new integrations or your app can make HTTP requests; it's better for programmatic testing and automation.
| Setting | Value |
|---|---|
| Host | sandbox.smtp.mailtrap.io |
| Ports | 2525 (default), 25, 465 (SSL), 587 |
| Username / Password | Per sandbox credentials from the Integration tab in the Mailtrap UI |
Never use sandbox credentials or endpoints in production. Messages will only be captured in the sandbox, not delivered.
sandbox.api.mailtrap.io / sandbox.smtp.mailtrap.io with a valid inbox id.Use API docs for details, but typical endpoints include:
| Operation | URL | Reference |
|---|---|---|
| List sandboxes | GET https://mailtrap.io/api/accounts/$MAILTRAP_ACCOUNT_ID/inboxes | Sandboxes API |
| List messages | GET https://mailtrap.io/api/accounts/$MAILTRAP_ACCOUNT_ID/inboxes/{inbox_id}/messages | Messages |
| Fetch a message | GET https://mailtrap.io/api/accounts/$MAILTRAP_ACCOUNT_ID/inboxes/{inbox_id}/messages/{id} | Message details |
| Send test email | `POST https://mailtrap.io/api/accounts/$MAILTRAP_ACCOUNT_ID/inboxes/{inbo |
~30 seconds. Free. No account. Every finding cites a rule and a line of evidence.