vanderbuild
Get in touch
← All tools

GlockApps

Know where your emails land

Deliverability
For AI agents
APICapable readiness
About

What is GlockApps

GlockApps runs deliverability tests against real mailbox providers, scoring your emails for spam triggers, checking authentication records (SPF, DKIM, DMARC), and reporting on where messages actually land — inbox, spam, or missing entirely. It also monitors IP addresses and domains against blacklists and analyzes email content and HTML for issues that cause filtering. Marketing teams and RevOps operators at SMBs and mid-market companies use it to diagnose why campaigns underperform before they send at scale. The seed list testing capability is particularly useful — you can run placement tests across dozens of providers simultaneously rather than guessing after the fact. That said, GlockApps is a testing and monitoring tool, not a sending platform, so it won't replace your ESP or fix underlying infrastructure problems on its own.

Deliverability
Capabilities

Key features

Deliverability infrastructure

warmup, spam tests, and sender reputation

Outbound webhooks

event-driven integrations

Our verdict

Vanderbuild take

For Marketing and RevOps teams that rely on email as a revenue channel, GlockApps is a focused deliverability diagnostic tool — not a sending platform, but a reliable way to understand why emails aren't reaching inboxes before you've burned your sender reputation. The API is available and capable, meaning you can wrap GlockApps calls into your own automation layer or MCP setup without too much friction — solid for teams that want deliverability checks baked into pre-send workflows rather than run manually. Pricing starts free with two test runs, and the credit-based model is affordable for small teams, though costs will climb if you're running frequent seed list tests at volume. The honest limitation here is integration depth — MailChimp is the only named integration, so if you're expecting native connectors to your CRM or sequencing tool, you'll be building that bridge yourself.

Mateusz Sekta
Founder, vanderbuild
Learn more

Our Resources

The wedge

Agentic stack profile

API
REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →
Agentic readiness
Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role
Deliverability

Where this tool slots into an agentic pipeline.

Plays the role of Deliverability in an agentic pipeline. Use it to keep email sending reputation healthy — warmup, spam tests.

Compare

GlockApps alternatives

Tools that solve a similar problem — compared at a glance.

GlockApps(this tool)
Pricing
Freemium
Budget
$$
Best for
Marketing, RevOps
Readiness
Capable
API
REST
Zapmail
Pricing
Client-based
Budget
$$
Best for
SDR / BDR, Agency
Readiness
Capable
API
REST
Zerobounce
Pricing
Freemium
Budget
$$
Best for
RevOps, GTM Engineer
Readiness
Capable
API
REST
Answers

Frequently asked questions

Does GlockApps have a public API?

Yes — GlockApps ships a REST API. Docs: https://glockapps.com/api-documentation-v2/.

How much does GlockApps cost?

GlockApps: pricing is freemium, expect mid tier ($$) spend. Full pricing page: https://glockapps.com/pricing.

Who is GlockApps best for?

GlockApps is built for Marketing, RevOps. Fits SMB (1-50), Mid-market (50-500)-sized teams.

How well does GlockApps fit an agentic sales stack?

Tier: Capable. Solid public API, no MCP yet — straightforward to wrap in your own agent tooling.