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GlockApps

glockapps.com

From $59/mo Free plan WebAPI
Visit glockapps.com
Spec score 9.0 #2 of 28 in Email Testing Software

What it is

GlockApps helps marketers and businesses check email deliverability and investigate placement problems before sending campaigns. Inbox Insight shows whether test messages reach inboxes, spam folders, or subfolders at different providers, and checks them against SpamAssassin, Barracuda, Microsoft Exchange Online Protection, Proofpoint, and a Google filter. Reputation tools check IPs and domains against blocklists and report sender scores and placement by IP. Content analysis covers message size, images, and links, with an HTML compatibility checker. DMARC Analytics collects reports, tracks sending sources, and retains reports for a year. Uptime Monitor checks IPs, SPF, DKIM, DMARC, HTTP, TLS, and TCP, with checks configurable as often as every minute. The API supports automated testing, result retrieval, and client management by projects and folders on all plans, including free. GlockApps runs on the web and through an API. Its free plan includes two spam test credits; paid plans start at $59 a month, billed annually at $708.

Spec sheet

What it does
GlockApps is a hosted email-deliverability and email-security suite that tests inbox placement, authentication, reputation, blocklists and content.Read 15 Oct 2026 · glockapps.com
Purpose
GlockApps provides tools to test and monitor email deliverability and troubleshoot placement problems before emails are sent.Read 30 Sep 2026 · glockapps.com
API
The API supports automated testing, programmatic result retrieval, and client management by projects and folders, and the page says it is available on all plans including free.Read 30 Sep 2026 · glockapps.com
Integrations
The company lists Return Path, Mailchimp, SpamAssassin, Amazon SES, SparkPost, Mailgun, SendGrid and Slack among its integrations.Read 15 Oct 2026 · glockapps.com
Support
GlockApps lists a Help Center and step-by-step tutorials, and says its DMARC support specialists have more than 15 years of experience.Read 30 Sep 2026 · glockapps.com
Founded
LinkedIn lists the company as founded in 2009.Read 15 Oct 2026 · linkedin.com
API data
The API can retrieve provider placement, reputation and blocklists, SPF/DKIM/DMARC/rDNS/HELO checks, five spam-filter scores and content diagnostics.Read 15 Oct 2026 · cdn.glockapps.com
Automatic alerts
Automatic tests can alert users about mailbox, domain and deliverability problems, with Uptime Monitor notifications by email, Slack or Telegram.Read 15 Oct 2026 · glockapps.com
Company legal name
The official company-background page identifies GlockApps as doing business as Deluxe Custom Apps LLC.Read 15 Oct 2026 · cdn.glockapps.com
Company locations
LinkedIn lists additional locations in Amsterdam, Netherlands and Tbilisi, Georgia.Read 15 Oct 2026 · linkedin.com
Company profile
LinkedIn lists GlockApps as privately held software-development company with 11–50 employees and headquarters in Pinedale, Wyoming.Read 15 Oct 2026 · linkedin.com
Content analysis
Content Analysis evaluates message size, images, links and HTML/CSS compatibility across email clients.Read 15 Oct 2026 · glockapps.com
Data retention
Inbox Insight reports, messages and raw test data are retained for 12 months, message headers for 30 days, and free-checker reports for 30 days.Read 15 Oct 2026 · cdn.glockapps.com
Data security
GlockApps states that customer data is stored in AWS US East, encrypted at rest with AES-256 and in transit with TLS 1.2 or higher, with optional two-factor authentication.Read 15 Oct 2026 · cdn.glockapps.com
DMARC
DMARC Analytics collects and analyzes DMARC reports, monitors sending sources, and stores reports for a year.Read 30 Sep 2026 · glockapps.com
DMARC Analytics
DMARC Analytics monitors SPF, DKIM and DMARC authentication, unauthorized senders and suspicious activity across unlimited domains.Read 15 Oct 2026 · glockapps.com
Documentation and support
The help center contains Account & Billing, Inbox Insight, DMARC Analytics, Uptime Monitor, Postmaster Tool, tutorials, help topics and a glossary.Read 15 Oct 2026 · help.glockapps.com
Free trial limit
The Uptime Monitor page offers up to 20 monitors free for 14 days.Read 30 Sep 2026 · glockapps.com
Funding and ownership
Crunchbase lists GlockApps as private and active, with no publicly disclosed funding amount in the profile view.Read 15 Oct 2026 · crunchbase.com
HubSpot integration
HubSpot can be connected for manual or recurring deliverability tests, but Smart Tests are unavailable and HubSpot Marketing Hub Professional or higher is required.Read 15 Oct 2026 · help.glockapps.com
Inbox Insight
Inbox Insight sends test messages to major mailbox providers and reports inbox, spam and tab placement, spam-filter scores, authentication, reputation and content issues.Read 15 Oct 2026 · glockapps.com
Inbox placement
Inbox Insight reports whether test emails land in inboxes, spam folders, or subfolders across email providers.Read 30 Sep 2026 · glockapps.com
Limit: learning curve
G2 reviewers mention that detailed reports and the broad feature set can take time for beginners to understand.Read 15 Oct 2026 · g2.com
Limit: missing search/filter
Capterra's feature comparison marks Search/Filter as unavailable for GlockApps and identifies missing mobile-app and email-distribution features.Read 15 Oct 2026 · capterra.com
Limit: rendering tests
A G2 reviewer says GlockApps lacks email-rendering previews and requires a separate product such as Litmus for that job.Read 15 Oct 2026 · g2.com
Limit: technical setup
A Capterra reviewer says users need some understanding of email protocols and authentication to get the most from initial setup.Read 15 Oct 2026 · capterra.com
Mailchimp
GlockApps can import its test addresses into a Mailchimp audience and send campaign copies to that test list.Read 30 Sep 2026 · glockapps.com
Notable news
The API documentation states that API access was expanded to all plans, including the free tier, by October 2026.Read 15 Oct 2026 · cdn.glockapps.com
Postmaster integration
The Postmaster Tool connects Google Postmaster data, stores historical metrics longer than Google and alerts on worsening spam rates.Read 15 Oct 2026 · glockapps.com
Praise: actionable diagnostics
G2 reviewers repeatedly value authentication, reputation and content explanations paired with concrete recommendations.Read 15 Oct 2026 · g2.com
Praise: Gmail tab prediction
Capterra reviewers praise prediction of Gmail Primary, Promotions and Social placement and shareable reports.Read 15 Oct 2026 · capterra.com
Praise: inbox visibility
G2 reviewers repeatedly praise clear inbox, spam and tab placement results, seed-list testing and visibility before sending campaigns.Read 15 Oct 2026 · g2.com
Public API
GlockApps exposes REST endpoints with GET and POST methods, JSON responses and an apiKey parameter, and says API access is included on every plan including free.Read 15 Oct 2026 · cdn.glockapps.com
Rating on Capterra
4.8 out of 5 from 40 reviews.Read 15 Oct 2026 · capterra.com
Rating on G2
4.2 out of 5 from 29 reviews.Read 15 Oct 2026 · g2.com
Reporting and white label
The service supports PDF exports, project and folder client management, and white-labeled shared reports in Enterprise or custom packages starting at $250.Read 15 Oct 2026 · help.glockapps.com
Reputation checks
The service monitors IPs and domains against industry blocklists and reports sender scores and placement by IP address.Read 30 Sep 2026 · glockapps.com
SDKs and extensibility
Official documentation provides Swagger API documentation and an MCP server for AI clients, while no official SDK or self-hosting package is described.Read 15 Oct 2026 · cdn.glockapps.com
Security and privacy
The privacy policy says Inbox Insight collects sender addresses and IPs, message content and headers, and mailbox provider placement results to provide testing.Read 30 Sep 2026 · glockapps.com
Spam filters
Inbox Insight tests emails through SpamAssassin, Barracuda, Microsoft Exchange Online Protection, Proofpoint, and a Google filter.Read 30 Sep 2026 · glockapps.com
System model
GlockApps describes itself as a service that hosts customer data and says it is not an email service provider.Read 15 Oct 2026 · cdn.glockapps.com
Uptime Monitor
Uptime Monitor checks websites, mail infrastructure, TLS and TCP ports, DNS authentication records and IP blocklists, with checks as frequent as every minute.Read 15 Oct 2026 · glockapps.com
Uptime monitoring
Uptime Monitor checks IPs, SPF, DKIM, DMARC, HTTP, TLS, and TCP, with configurable checks as frequent as every minute.Read 30 Sep 2026 · glockapps.com
Who it serves
The company says it created its tools to help marketers and businesses test email placement and identify problems before sending to subscribers.Read 30 Sep 2026 · glockapps.com

Plans and prices

Free Free 2 spam-test credits · 10,000 DMARC messages · unlimited DMARC domains · 5 uptime monitors · 1 IP-reputation monitor · 0 DMARKOFF domains · 1 user Read 15 Oct 2026 · glockapps.com
Essential $59 a month $708 paid annually 360 spam-test credits · 600,000 DMARC messages · unlimited DMARC domains · 15 uptime monitors · 10 IP-reputation monitors · 3 DMARKOFF domains · 1 user Read 15 Oct 2026 · glockapps.com
Growth $99 a month $1,188 paid annually 1,080 spam-test credits · 1,200,000 DMARC messages · unlimited DMARC domains · 25 uptime monitors · 20 IP-reputation monitors · 6 DMARKOFF domains · 5 users Read 15 Oct 2026 · glockapps.com
Enterprise $129 a month $1,548 paid annually 1,800 spam-test credits · 12,000,000 DMARC messages · unlimited DMARC domains · 30 uptime monitors · 25 IP-reputation monitors · 9 DMARKOFF domains · 10 users Read 15 Oct 2026 · glockapps.com

Every GlockApps plan and price →

Strong points and limits

Strong points

  • Tests placement across inboxes, spam folders, and subfolders
  • Checks several named spam filters
  • Tracks IP and domain blocklists
  • API access is available on the free plan
  • Free plan includes 10,000 DMARC messages

Limits

  • Free plan includes two spam test credits
  • Essential costs $59 a month, billed annually
  • Inbox Insight collects message content and headers

Who it suits

It suits marketers and businesses that want to assess message placement and sender reputation before sending to subscribers. Teams monitoring DMARC or uptime can also use its reporting and checks.

GlockApps in depth

Read the full write-up

GlockApps is an email deliverability service for marketers and businesses that want to find placement or sender-configuration problems before campaigns go out. It suits teams that need both campaign checks and ongoing monitoring better than senders looking for only an occasional spam test. Its broad toolkit is compelling, but regular testing and multiple users require a paid tier.

Overview

Inbox Insight reports whether test emails reach inboxes, spam folders, or subfolders across email providers. It also checks messages through SpamAssassin, Barracuda, Microsoft Exchange Online Protection, Proofpoint, and a Google filter. By pairing placement results with blocklist checks, sender scores, and placement by IP, GlockApps gives teams several ways to investigate delivery problems rather than treating inbox placement as the whole picture.

Its scope extends from campaign content to sending infrastructure. Content analysis covers message size, images, and links, with an HTML compatibility checker. DMARC Analytics collects reports, monitors sending sources, and retains reports for a year. Uptime Monitor checks IPs, SPF, DKIM, DMARC, HTTP, TLS, and TCP, with checks configurable as often as every minute. That breadth is useful for teams responsible for ongoing sending operations, but may be unnecessary if the only need is a periodic spam check.

Key features

Connections and automation

GlockApps offers mailbox connections for Gmail, Google Workspace, Amazon, Mailgun, SendGrid, Outlook, Mailjet, Klaviyo, HubSpot, and SparkPost. Mailchimp users can import test addresses into an audience and send campaign copies to that list, a practical way to include placement checks in a campaign workflow.

The API supports automated tests, programmatic retrieval of results, and client management through projects and folders. It is available on every plan, including Free, so automation is not reserved for paid customers. The trade-off is that plan quotas still govern how much testing and monitoring teams can do.

Support and data

The Help Center and step-by-step tutorials provide self-service guidance, while GlockApps says its DMARC support specialists have more than 15 years of experience. Inbox Insight collects sender addresses and IPs, message content and headers, and mailbox-provider placement results to provide testing; that data handling is relevant for teams evaluating what messages to submit.

Pricing

GlockApps uses a freemium model, with paid plans billed annually at the stated monthly rates. The main distinction is capacity: spam-test credits, DMARC message allowances, monitors, reputation monitors, and user seats all increase by tier. Choose by expected volume and team size, not simply by the headline price.

PlanPrice and termIncluded limitsFreefree2 spam test credits; 10,000 DMARC messages; unlimited DMARC domains; 5 uptime monitors; 1 IP reputation monitor; 1 userEssential$59 a month (billed $708 paid annually)360 spam test credits; 600,000 DMARC messages; unlimited DMARC domains; 15 uptime monitors; 10 IP reputation monitors; 1 userGrowth$99 a month (billed $1,188 paid annually)1,080 spam test credits; 1,200,000 DMARC messages; unlimited DMARC domains; 25 uptime monitors; 20 IP reputation monitors; 5 usersEnterprise$129 a month (billed $1,548 paid annually)1,800 spam test credits; 12,000,000 DMARC messages; unlimited DMARC domains; 30 uptime monitors; 25 IP reputation monitors; 10 usersFree is a useful way to try the API and basic monitoring, but two spam-test credits and one user make it a poor fit for recurring campaign checks or a team. Essential is the entry point for regular testing, with 360 credits and substantially higher DMARC capacity, though it remains limited to one user. Growth is the more practical choice for teams needing five seats and more testing headroom. Enterprise raises the DMARC allowance sharply and supports ten users, making it the best fit of these plans for larger programs; it still has finite testing and monitor quotas.

There is also a separate Uptime Monitor offer of up to 20 monitors free for 14 days. It provides a time-limited way to evaluate uptime monitoring, distinct from the ongoing Free plan’s five monitors.

Platforms

GlockApps runs on web and offers an API, so teams can use the service directly or automate tests and retrieve results programmatically. The API is available on all plans, including Free.

Who it's for

GlockApps is best for marketers and businesses that send email regularly and need to diagnose placement issues while keeping an eye on sender reputation, authentication, and service availability. It is less suited to a solo sender who only wants a few occasional placement checks: the Free allowance is small, and a paid plan brings an annual commitment.

Pros and cons

Pros: Inbox placement, spam-filter checks, reputation monitoring, content analysis, DMARC reporting, and uptime checks bring campaign and infrastructure oversight together.

Pros: API access on every plan supports automation without requiring an upgrade first.

Pros: Unlimited DMARC domains across the listed plans avoids a domain-count ceiling as a team grows.

Cons: Free includes only two spam-test credits and one user, limiting its usefulness for ongoing team work.

Cons: Essential also has one user, so teams need Growth or Enterprise for multiple seats.

Cons: Paid tiers are billed annually, which is a meaningful commitment for users who have not established recurring testing needs.

Alternatives

For a broader comparison, browse Email Deliverability Software or Email Testing Software.

Postmark is another freemium web and API option with a free plan and free trial; consider it when its email-sending plans are a closer fit.

EasyDMARC offers a free tier with 1,000 emails per month, one domain, 14 days of data history, and one invited user, plus DMARC Plus at $35.99 a month billed annually. It may suit readers prioritizing a lower-priced DMARC-focused starting point.

Suped has a web free plan covering 1,000 emails per month, one domain, 14 days of retention, unlimited users, and email support; its Business plan is $19 a month. Consider it if those limits and its lower stated Business price fit better.

Folderly is an alternative with free inbox-insight tests and real-time alerts.

TrueSend is another freemium web and API option with a free plan.

Unspam.email offers a no-account plan with three spam tests per month, two inbox placements per month, one device preview per month, and 24-hour data retention; its Custom plan starts at $5 a month. It is worth considering for occasional checks with a very small monthly budget.

SenderSignal is a freemium web option; its Professional pricing page displays ₹4490/mo.

DMARCLY is a paid web and API option with a free trial, and may be worth comparing if DMARC is the main requirement.

Verdict

Choose GlockApps if you need one service for inbox placement checks, sender reputation, DMARC reporting, and uptime monitoring, especially when API automation matters. The Free plan helps establish whether its workflow fits, but its two test credits and single seat are restrictive; regular users should budget for annual billing. If your needs stop at occasional testing or a narrower DMARC task, a more focused alternative may be the better fit.

Verdict

GlockApps combines placement testing with reputation, DMARC, content, and uptime monitoring. The free plan includes limited spam test credits, while Essential starts at $59 a month, billed annually.

Where Specifiction places it

Alternatives to GlockAppsAll alternatives →