The MxToolbox Insider’s Guide
Everything we know about MxToolbox in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
MxToolbox
The Insider’s Guide
Email and DNS lookups plus blacklist and DMARC monitoring
Every plan, grade, refund rule and rival among email verification and deliverability tools, read from MxToolbox’s own pages.
Made by MXToolBox, Inc · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from MxToolbox’s own pages, its app-store listings and our grades. Every fact in it is on MxToolbox’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.0
GPA, above 4 of the 38 other email verification and deliverability tools we grade
MxToolbox is known for its web lookup tools for MX records, blacklists, DNS and email headers. Its Delivery Center product adds inbox placement analysis, DMARC reporting, SPF, DKIM and BIMI management, and monitoring of sending IPs against blacklists. A free plan covers weekly blacklist monitoring of one domain, and a managed service handles reputation and DMARC enforcement for a customer.
To get you started, here are 9 things to know about MxToolbox, taken from its own pages and our grades.
You add domains and records and read the monitors, so there is setup.
- 1
Best for blacklist and DMARC monitoring for a domain
MxToolbox watches blacklists, DMARC, SPF and mailflow for a domain.
- 2
Paid plans start at $129 a month
As its pricing page puts it: $129 per month.
- 3
There is a free plan
Weekly blacklist monitoring for 1 domain.
- 4
It runs on Web
Web.
- 5
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.
- 6
Adaptive blacklist monitoring
Monitors sending IP addresses, including third-party senders, against more than 100 blacklists.
- 7
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.
- 8
A 2.0 GPA, above 4 of 38
That is against the other email verification and deliverability tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
The plain part of MxToolbox you could make: reports. What surrounds it you could not. The 3 things listed below take a company, not a weekend.
MxToolbox at a glance
- Pricing
- Free plan, from $129 per month
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- MXToolBox, Inc
- Category
- Email Verification & Deliverability
- Our grade
- 2.0 GPA, fair
The report card
Best for blacklist and DMARC monitoring for a domain
MxToolbox watches blacklists, DMARC, SPF and mailflow for a domain. The free plan is weekly blacklist checks for 1 domain, the first paid plan is $129 a month for 5 domains, and inbox placement and DMARC reports only come with paid plans.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | D | Delivery 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 | C | Free is weekly blacklist monitoring for 1 domain. Inbox placement, DMARC reports and anything beyond that are paid. |
| Features | B | Inbox 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 | C | No store rating on record. You add domains and records and read the monitors, so there is setup. |
| Platforms and integrations | C | Web only. Google Postmaster Tools is the one integration listed. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who MxToolbox is for
- 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
Who it is not for
- 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
Good to know
Good for
- Admins who want free lookups and one monitored domain at no cost
- Senders tracking blacklist status and inbox placement together
- Companies that would rather have a managed service handle DMARC
Worth knowing
- 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.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$129
A month to start. There is a free plan too
MxToolbox has a free plan. Paid plans start at $129 per month.
The page does not say if it is billed monthly or yearly.
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.
The free plan
Weekly blacklist monitoring for 1 domain.
Read from mxtoolbox.com on Nov 12, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Email and DNS lookups plus blacklist and DMARC monitoring. Here is what it does, as its own site describes it, and what it covers: public API, reports, dMARC.
Inbox placement, blacklist monitoring, DMARC, SPF and DKIM management, complaints and mailflow in one place.
- 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.
Where it runs
- Web
What it works with
- Google Postmaster Tools
MxToolbox is made by MXToolBox, Inc.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
4/38
Other email verification and deliverability tools it is graded above
MxToolbox's GPA of 2.0 is higher than 4 of the 38 other email verification and deliverability tools we grade, and level with 7.
It stands best on features (B, above 24 of 38) and worst on value for money (D, above 0).
Its paid plans start at $129 a month, against a middle price of $17.49 for the category: 24 of the 25 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 8 tools score higher and cost less.
Each grade against the category
Every bar is all 39 email verification and deliverability tools we grade, cut by the letter each got. MxToolbox’s own letter is outlined.
- DValue for moneyAbove 0 of 38
- CFree plan and trialAbove 5 of 38
- BFeaturesAbove 24 of 38
- CEase of useAbove 1 of 38
- CPlatforms and integrationsAbove 0 of 38
Price against what you get
Each dot is one of 26 email verification and deliverability tools. Further left costs less; higher up scores better on features, ease of use and platforms. MxToolbox is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
The plain part of MxToolbox you could make: reports. What surrounds it you could not. The 3 things listed below take a company, not a weekend.
That makes this kind of software worth paying for, not this one in particular: 27 of the 38 other email verification and deliverability tools grade higher. It costs $1,548 a year.
What you could make
- Reports: an app builder makes this well.
What you could not
- Reading the reports inbox providers send about your domain.
- It plugs into other products, Google Postmaster Tools among them, and has an API.
- The depth: we grade its features B, which means it covers the whole job.
What this rests on. MxToolbox’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
GlockApps, dmarcian, EasyDMARC, PowerDMARC and Dmarcly
The 5 tools MxToolbox is most often weighed against, with where each one differs from it.
- 2.2GPA
GlockApps
Free plan · from $59/mo
Inbox placement testing with DMARC analytics and uptime monitoring.
- MxToolbox also covers reports.
- 2.2GPA
dmarcian
Free plan · from $19.99/mo
DMARC report processing and policy deployment, by a spec co-author.
- MxToolbox also covers reports.
- 2.0GPA
EasyDMARC
Free trial · from $35.99/mo
DMARC setup, reporting and managed SPF, DKIM and BIMI records.
- MxToolbox has a free plan. EasyDMARC does not, though it has a free trial.
- MxToolbox also covers reports.
- 1.8GPA
PowerDMARC
Paid
DMARC reporting with hosted SPF, DKIM, BIMI and MTA-STS records.
- MxToolbox has a free plan. PowerDMARC does not.
- MxToolbox also covers reports.
- 2.2GPA
Dmarcly
Free trial · from $17.99/mo
DMARC monitoring with a dashboard, SPF flattening and alerts.
- MxToolbox has a free plan. Dmarcly does not, though it has a free trial.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
13
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is MxToolbox free?
MxToolbox has a free plan. Weekly blacklist monitoring for 1 domain.
How much does MxToolbox cost?
MxToolbox lists 3 plans. Free: $0.
What platforms does MxToolbox work on?
MxToolbox is available on Web.
Does MxToolbox have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. MxToolbox is listed for Web.
Does MxToolbox have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. MxToolbox is listed for Web.
Is MxToolbox open source?
MxToolbox is not described as open source on its own site, as read on Nov 12, 2026.
Does MxToolbox have an API?
Yes. MxToolbox offers a public API, according to its own site.
What does MxToolbox integrate with?
MxToolbox's listing names Google Postmaster Tools. A listing names up to eight integrations, so it may connect to more.
Who makes MxToolbox?
MxToolbox is made by MXToolBox, Inc.
What are the alternatives to MxToolbox?
The closest alternatives to MxToolbox in our directory are GlockApps, dmarcian, EasyDMARC, PowerDMARC and Dmarcly.
How does MxToolbox compare with other email verification and deliverability tools?
MxToolbox's GPA of 2.0 is higher than 4 of the 38 other email verification and deliverability tools we grade, and level with 7.
Is MxToolbox good value for money?
ToolGPA grades MxToolbox D for value for money. Its paid plans start at $129 a month, against a middle price of $17.49 for the category: 24 of the 25 others that charge start lower.
Could I make my own version of MxToolbox?
The plain part of MxToolbox you could make: reports. What surrounds it you could not.
Where this guide comes from
The prices, plans, platforms and features were read from MxToolbox’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from MxToolbox's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by MXToolBox, Inc. Prices change, so check mxtoolbox.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- MxToolbox, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/mxtoolbox
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "MxToolbox: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/mxtoolbox
Know someone choosing between email verification and deliverability tools?
Send them this guide: toolgpa.com/tools/mxtoolbox/guide
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See our other guides
The best-graded email verification and deliverability tools after MxToolbox, each with an Insider's Guide of its own.
- Email Verification & Deliverability Insider's GuideEvery one of the 40 email verification and deliverability tools we grade, compared
- QuickEmailVerification Insider's GuideBulk email list cleaning and a real-time verification API3.0 GPA
- Mail-Tester Insider's GuideSend an email to a test address and get a spam score out of 102.8 GPA
- Reoon Email Verifier Insider's GuideBulk and real-time email verification with refunds on unknowns2.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what MxToolbox’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. MxToolbox is a trademark of its owner, and this guide is not made, paid for or approved by MXToolBox, Inc. Prices and plans change: check mxtoolbox.com before you buy.