GlockApps vs MxToolbox (2026): which should you pick?
As of Nov 13, 2026, we pick GlockApps: it is third in our ranking of email verification and deliverability tools, and it grades higher too, 2.2 against 2.0.
Checked Oct 18, 2026 and Nov 12, 2026 · graded Oct 18, 2026 and Nov 12, 2026 by ToolGPA
GlockApps grades higher on value for money and the free plan. MxToolbox grades higher on features. They get the same grade on ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
GlockApps
Inbox placement testing with DMARC analytics and uptime monitoring
MxToolbox
Email and DNS lookups plus blacklist and DMARC monitoring
Which one is for you
Pick GlockApps if
- Fits if you want to see where a campaign lands before it goes out
- Works for agencies reporting on client domains with branded PDFs, or for several small domains on free DMARC
Look elsewhere if
- Pricey if you pay monthly, as Essential is $85 against $59 billed yearly
- Skip it if you need list cleaning or warm-up, as it tests and monitors only
- Tight if a team shares it, as Essential is for one user and 5 users start at Growth, $99 a month billed yearly
- Watch out: credit packs expire, with 3 tests for $16.99 valid for one month
- Not for you if you want integrations, as Google Postmaster Tools is the only one listed
Pick MxToolbox if
- Fits if you want to be told when your sending domain lands on a blacklist
- Works for teams that want DMARC, inbox placement and blacklists in one tool
Look elsewhere if
- Pricey if you are one person: the first paid plan is $129 a month
- Tight if you stay free, as it is weekly blacklist checks for 1 domain
- Tight if you want more domains, since both paid plans cover 5
- Watch out: managed services are not priced, and the page gives no billing basis
How we grade them
| 2.2GPAGlockAppsFair | 2.0GPAMxToolboxFair | |
|---|---|---|
| Value for money | CEssential is $59 a month billed yearly ($85 monthly) for 30 spam tests and 50,000 DMARC messages a month. For DMARC alone that's above its listed rivals dmarcian ($19.99) and EasyDMARC ($35.99), but neither runs placement tests on its priced plans. | DDelivery Center is $129 a month for 5 domains and Plus is $399, above the $99 where the dearest tenth of deliverability tools starts. The page does not say if it is billed monthly or yearly. |
| Free plan and trial | BA free plan with no card: 10,000 DMARC messages a month for unlimited domains, 5 uptime monitors, 1 IP reputation monitor and 2 spam tests. A small domain can live on the DMARC side; 2 tests won't go far. | CFree is weekly blacklist monitoring for 1 domain. Inbox placement, DMARC reports and anything beyond that are paid. |
| Features | CPlacement tests report inbox, spam or tab by provider, with SpamAssassin scores, authentication checks and 50+ blocklists, and DMARC reports for unlimited domains. But it doesn't clean lists or warm up inboxes; it tests and monitors only. | BInbox placement, blacklist monitoring, DMARC, SPF and DKIM management, complaints and mailflow in one place. It covers a wide job, and managed services are not priced. |
| Ease of use | CNo App Store rating on record. A test means sending your email to its seed list, but DMARC needs a DNS record first, and the reports take some know-how to act on. | CNo store rating on record. You add domains and records and read the monitors, so there is setup. |
| Platforms and integrations | CWeb only, with Google Postmaster Tools as the one connection listed, plus an API and white-label reports. No phone or desktop app. | CWeb only. Google Postmaster Tools is the one integration listed. |
| Best for | seeing where a campaign lands before it goes | blacklist and DMARC monitoring for a domain |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: GlockApps and MxToolbox. How we grade
Price against what you get
GlockApps starts at $59 a month and scores 2.0 out of 4 on features, ease of use and platforms. MxToolbox starts at $129 a month and scores 2.3.
MxToolbox scores higher, and starts $70 a month higher: the question is whether the extra is worth that to you. Of the other email verification and deliverability tools on the chart, 20 score higher than GlockApps for less, and 8 score higher than MxToolbox for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- MxToolbox also covers reports.
At a glance
| GlockApps | MxToolbox | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $59 per month, billed annually ($85 monthly) | $129 per month |
| Free plan | 10,000 DMARC messages a month for unlimited domains, 5 uptime monitors, 1 IP reputation monitor and 2 free spam tests, no card required. | Weekly blacklist monitoring for 1 domain. |
| Free trial | None listed | None listed |
| Web | ||
| Made by | Deluxe Custom Apps LLC | MXToolBox, Inc |
| Price read from | glockapps.com | mxtoolbox.com |
| Checked | Oct 18, 2026 | Nov 12, 2026 |
Worth knowing
GlockApps
- Annual plans list yearly allowances (Essential: 360 spam tests and 600,000 DMARC messages a year) rather than monthly ones.
- Annual billing saves about 30%, and monthly prices are much higher: Essential is $85 against $59.
- DMARC Analytics alone is sold from $55 a month for 1 million messages, billed monthly.
- GlockApps has no list verification or warm-up; it tests and monitors only.
MxToolbox
- The free plan monitors one domain, weekly; inbox placement and DMARC reports are paid.
- Both paid plans cover 5 domains; Plus raises the message volume, not the domain count.
- The page shows a monthly price and does not say whether it is billed monthly or annually.
- Managed services pricing is not listed.
Key features
GlockApps
- Inbox Insight
- Seed-list tests show inbox, spam or tab placement by provider, with SpamAssassin scores, authentication checks and a scan of 50+ blocklists.
- DMARC Analyzer
- Collects DMARC reports for unlimited domains with daily reports, a digest and alerts on suspicious activity; overage costs $2 to $7.50 per 100,000 messages.
- Uptime and IP reputation monitors
- Watches websites, mail servers and sending IPs, and checks SPF, DKIM and DMARC records every two hours.
- Google Postmaster integration
- Brings Google Postmaster Tools data into the dashboard next to test results.
- API and white-label reports
- An API for automated testing, projects and folders for managing clients, and branded PDF reports.
MxToolbox
- Inbox placement analysis
- Checks a campaign for placement at inbox providers such as Google and Outlook.com and reviews it against Google, Microsoft and Yahoo bulk sender requirements.
- Adaptive blacklist monitoring
- Monitors sending IP addresses, including third-party senders, against more than 100 blacklists.
- DMARC, SPF and DKIM management
- Analysis and management tools for moving to a reject policy, adopting BIMI and watching compliance. SPF flattening is on the Plus plan.
- Recipient complaints
- Pulls feedback from Google Postmaster Tools, feedback loops and other complaint mechanisms.
- Mailflow monitoring
- Round-trip monitoring of sending and receiving latency with alerts based on thresholds.
- Managed services
- A done-for-you service covers inbox placement, blacklist monitoring, SPF/DKIM setup and DMARC enforcement.
Plans
GlockApps
Free$0
2 spam tests, 10,000 DMARC messages a month, 5 uptime monitors and 1 user.
Credits Pack 1$16.99
one-time for 3 spam tests
Credits valid for 1 month. Pack 2 is $47.99 for 10 tests valid 2 months, and Pack 3 $75.99 for 20 valid 3 months.
Essential$59
per month, billed annually ($85 monthly)
30 spam tests and 50,000 DMARC messages a month, 15 uptime monitors, 10 IP reputation monitors and 3 DMARKOFF domains, for one user.
Growth$99
per month, billed annually ($142 monthly)
90 spam tests and 100,000 DMARC messages a month, 25 uptime monitors, 20 IP reputation monitors and 5 users.
Enterprise$129
per month, billed annually ($185 monthly)
For agencies: 150 spam tests and 1 million DMARC messages a month, 30 uptime monitors and 10 users.
CustomCustom
A plan built to order for large senders.
MxToolbox
Free$0
Blacklist monitoring, run weekly, for 1 domain.
Delivery Center$129
per month for 5 domains and 500,000 messages (billing basis not shown)
30 inbox placement analyses a month, complaint reporting, DMARC reports, SPF/DKIM analysis, BIMI management, impersonation protection, mailflow monitoring.
Delivery Center Plus$399
per month for 5 domains and 5M messages (billing basis not shown)
100 inbox placement analyses a month, plus advanced delivery threat tools and SPF flattening on top of Delivery Center.
Ways to pay less
GlockApps
- Annual discount
Save 30% with annual billing
GlockApps lists a 30% saving on annual plans: Essential is $59 a month paid annually ($708) against $85 billed monthly.
MxToolbox
No public discounts listed.
Common questions
Which is cheaper, GlockApps or MxToolbox?
As of Nov 12, 2026, GlockApps is cheaper to start with: $59 a month, against $129 a month for MxToolbox. GlockApps starts at $59 per month, billed annually ($85 monthly), and MxToolbox starts at $129 per month.
Which has a free plan, GlockApps or MxToolbox?
As of Nov 12, 2026, both GlockApps and MxToolbox have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.