GlockApps' core feature is the inbox-placement test: send a message to their seed list of dozens of real mailboxes across Gmail, Outlook, Yahoo, AOL, and corporate gateways, and they tell you where it landed. That's a useful signal — it's the closest thing to ground truth on whether your mail actually arrives in the inbox vs spam vs blocked.
MailerMonk doesn't run seed-list inbox-placement tests directly. Instead it watches the upstream signals — DMARC alignment, sender reputation across the major reputation feeds, blocklist status, and Gmail Postmaster Tools metrics — and alerts when the things that *cause* placement drops change. Both approaches have value; if you can afford to run regular inbox-placement tests, do, and pair them with a continuous monitor.
Feature comparison
| Feature | MailerMonk | GlockApps |
|---|---|---|
| Inbox-placement seed-list tests (Gmail / Outlook / Yahoo) | No | Yes |
| DMARC report ingestion + parsing | Yes | Yes |
| Continuous blocklist monitoring | Yes | Yes |
| Sender reputation tracking (SenderScore / Talos / etc.) | Yes | Yes |
| Gmail Postmaster Tools sync GlockApps reads Postmaster reports during placement tests; MailerMonk syncs continuously. | Yes | Partial |
| Free DMARC / SPF / DKIM / MX checkers | Yes | Yes |
| Browser extension | Yes | No |
| Multi-domain agency view | Yes | Partial |
Choose GlockApps when…
- Your job is to optimize a specific marketing campaign and you need real placement data per provider before each send.
- You run high-volume sending and the cost-per-placement-test is a small line item.
- You're comparing creative variants and want to A/B test which one lands in the primary tab vs promotions.
Choose MailerMonk when…
- You want continuous, set-and-forget monitoring — alerts when something breaks, not a tool you remember to log into before each campaign.
- Your sending volume doesn't justify per-test placement pricing.
- You want one tool covering DMARC monitoring, reputation, blocklists, and Postmaster — not stitching three subscriptions together.
Pricing
GlockApps prices per-test for inbox placement and per-domain for monitoring; costs add up fast at high volume. MailerMonk's flat per-domain pricing covers continuous monitoring without per-test fees.
See GlockApps pricing →