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.

Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.

Against behavior-triggered journeys, broadcasts, and winback campaigns measured on revenue, GlockApps covers event stream and multi-tenant support, and does not cover scheduling and the suppressions API. Whether that gap matters depends on how central those are to the build.

• Scheduling: No
• Event stream: Yes
• Deliverability: Not a sender. Measures inbox placement and DMARC alignment so teams can diagnose deliverability problems before blaming the ESP.
• Operating since: Not published
• Suppressions API: No
• Best published rate per 1,000: Tiers not published in comparable form
• Multi-tenant: Yes
• Free tier: Free plan with 2 Inbox Insight tests once and 10,000 DMARC messages/mo
• Starts at: $59/mo billed annually for Essential

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.