GlockApps

GlockApps combines seed-list inbox testing, spam test credits, DMARC analytics, uptime monitoring, and postmaster tooling. It is useful when a marketing or growth team needs to inspect where campaigns land across mailbox providers before and after sending.

Judged purely as an API. What the request contract guarantees on retry, how complete the webhook event coverage is, whether suppressions are readable and writable programmatically, and how much the message log retains when something needs debugging in production.

Against high-frequency programmatic sends where a missed delivery is a product failure, GlockApps covers event stream, and does not cover idempotency keys, webhook coverage, the suppressions API, batch sending, and SDK breadth. Whether that gap matters depends on how central those are to the build.

• Idempotency keys: No
• Webhooks: No
• Event stream: Yes
• Operating since: Not published
• Suppressions API: No
• Best published rate per 1,000: Tiers not published in comparable form
• Batch sending: No
• SDKs: None
• Deliverability: Not a sender. Measures inbox placement and DMARC alignment so teams can diagnose deliverability problems before blaming the ESP.

Not a sender. Measures inbox placement and DMARC alignment so teams can diagnose deliverability problems before blaming the ESP.

Growth and marketing teams that regularly test inbox placement across Gmail, Outlook, and other mailbox providers.

Teams that only need SPF, DKIM, and DMARC setup checks.