GlockApps
Inbox placement and spam testing across Gmail, Outlook and Yahoo, plus DMARC, blocklist and Google Postmaster monitoring in one account.
From $59/mo Free tier Free trial MCP server API
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Bottom line
GlockApps is a deliverability testing platform that shows where your email lands across Gmail, Outlook, Yahoo and other providers before a campaign goes out. It suits agencies and recruiters running cold email across several domains who need proof of inbox placement, not guesses. There is a free plan with 2 tests, paid plans start at $59/mo on annual billing, and a free trial is offered.
Stands out for: GlockApps puts seed list placement tests, DMARC reporting, blocklist monitors and a Google Postmaster dashboard in one account, where many warm-up tools only report their own network results. It also runs its own MCP server, so you can start a placement test and compare results from Claude or ChatGPT.
Watch out for: Spam test credits are the real limit, so testing many mailboxes on a schedule can push you from Essential to Growth or Enterprise. GlockApps tests and monitors but does not warm up mailboxes, so you still need a separate warm-up tool.
Overview
GlockApps has been building email testing software for more than 15 years. Its core product, Inbox Insight, gives you a list of seed addresses across major mailbox providers. You send your real campaign through your normal ESP or sending tool, and GlockApps reports where each copy landed: inbox, spam, a tab, or missing.
Each test also reports spam filter scores from Google, Barracuda and SpamAssassin, checks SPF, DKIM and DMARC, looks up your IPs and domain on 50+ blocklists, and analyses content such as message size, images and links. Action steps flag the issues worth fixing first.
Beyond testing, the account includes DMARC analytics with unlimited domains, uptime and IP reputation monitors, and a Google Postmaster Tools integration that sends alerts when your Gmail spam rate climbs. Agencies get projects, folders, white label reports and an API for automating tests.
For a recruiting agency doing outbound, the practical use is checking a new domain or a rewritten sequence before you push volume through it, and spotting a mailbox that has started landing in spam so you can pull it before it damages replies.
Who it's for
Best for
- Agencies testing inbox placement before launching client campaigns
- Recruiters rotating several cold email domains and mailboxes
- Teams that want DMARC reports and blocklist alerts in one place
- Senders who want Gmail Postmaster data kept longer than Google keeps it
Not ideal for
- Anyone who needs mailbox warm-up included
- Senders who only need a one-off free spam check
- Teams wanting a done-for-you deliverability service on a self-serve plan
Key features
Inbox Insight spam tests. Send a campaign to GlockApps seed addresses and see inbox, spam and tab placement by provider, with spam scores from Google, Barracuda and SpamAssassin.
Automatic tests and alerts. Schedule recurring tests and get alerts so you can pull a burnt mailbox from rotation and send it back to warm-up.
Reputation and blocklist monitoring. Check domains and IPs against 50+ blocklists and track Sender Score and placement for each sending IP.
DMARC analytics. Free plan includes 10,000 DMARC messages a month with daily reports, unlimited domains and SPF, DKIM and DMARC checks every two hours.
Google Postmaster integration. Pulls your Postmaster Tools data, alerts you when spam rate rises and keeps history longer than Google stores it.
API and MCP server. A documented API with white label PDF reports, plus an MCP server that lets Claude or ChatGPT start a placement test and read the results.
MCP server
https://glockapps.com/mcp/
First-party MCP at glockapps.com. https://glockapps.com/mcp/.
Setup steps and live status MCP Directory Check your stack in the MCP readiness checker
Pricing
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 2 spam test credits, 10,000 DMARC messages |
| Essential | $59/mo | Billed annually at $708; 360 spam test credits, 600,000 DMARC messages |
| Growth | $99/mo | Billed annually at $1,188; 1,080 spam test credits, 5 Postmaster users |
| Enterprise | $129/mo | Billed annually at $1,548; 1,800 spam test credits, aimed at agencies |
GlockApps has a Free plan at $0 with 2 spam test credits, 10,000 DMARC messages, 5 uptime monitors and 1 IP reputation monitor. Essential costs $59/mo shown on annual billing ($708 a year) and gives 360 spam test credits, 600,000 DMARC messages, 15 uptime monitors, 10 IP reputation monitors and 3 DMARKOFF domains. Growth costs $99/mo on annual billing ($1,188 a year) with 1,080 spam test credits, 1.2 million DMARC messages and 5 Postmaster Tool users. Enterprise, aimed at agencies, costs $129/mo on annual billing ($1,548 a year) with 1,800 spam test credits, 12 million DMARC messages and 10 Postmaster Tool users. Every paid plan includes API access and unlimited DMARC domains, DMARC overage is billed per 100,000 messages, and monthly billing is also offered. The vendor offers a free trial and 2 free tests with no credit card. Confirm current terms on the vendor site.
Checked 4 Nov 2026. Vendors change prices without notice.
Is GlockApps expensive?
GlockApps starts at $59/mo. We list 53 deliverability tools in total. 10 have a free tier, and those with a public price typically start around $29 a month.
- 5 quote-based
- 10 free tier
- 50 public price
Worked out automatically from every deliverability listing, so it updates as the directory changes.
Pros and cons
Pros
- Seed tests across many providers in one run
- Free plan with DMARC analytics and 2 tests
- Own MCP server and documented API
Cons
- Spam test credits run out fast with scheduled tests
- No mailbox warm-up
- Published prices shown on annual billing
Integrations
Google Postmaster Tools Claude ChatGPT Cursor
What's new at GlockApps
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How GlockApps compares
See all GlockApps alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| | ✓ | $59/mo | ✓ | ✓ | |
| | – | $20/mo | – | – | Compare |
| | ✓ | $79/mo | – | – | Compare |
| | – | $15/mo | – | – | Compare |
$20/mo
MailReach pairs spam tests with mailbox warm-up, which GlockApps does not include.
$79/mo Free tier
Folderly leans toward guided deliverability fixes, while GlockApps is a self-serve testing and monitoring tool with a free plan.
$15/mo
Warmbox focuses on warming mailboxes, so it suits senders who need warm-up more than seed placement tests.
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