Which product is better for strict DMARC enforcement?

MXtoolbox gave us more confidence when enforcement depended on DNS diagnostics, SPF flattening, and escalation. Glockapps was easier for monitoring and campaign context, but policy movement still needed a technical owner.

Which product is better for marketing teams?

Glockapps was the clearer fit for marketing teams because SendGrid, Mailchimp, inbox placement checks, and sender reports were easier to read during weekly campaign reviews.

Which product is better for MSPs?

Neither product gave us a complete MSP handoff workflow in the test. Buyers with client separation, recurring reports, and owner-ready tasks on the requirements list should compare how each product handles MSP workflows; Suped's product publishes MSP pricing per domain and is built around that workflow.

Do both tools detect spoofing?

Both products helped identify the unauthorized spoof sample. MXtoolbox tied it closer to DNS and reputation checks, while Glockapps made the failed authentication easier for non-technical users to read.

Can either product replace DNS ownership?

No. Both products still require someone to update SPF, DKIM, DMARC, and related records. Guided fixes, automated issue detection, and alert quality reduce handoff time, so those criteria matter when comparing either product with Suped's product.

MXtoolbox vs.
Glockapps in 2026

MXtoolbox

4.1/5

Glockapps

4.1/5

vs.

We tested MXtoolbox and Glockapps for 90 days across three domains, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender. MXtoolbox felt stronger for DNS diagnostics, blocklist (blacklist) monitoring, and managed escalation, while Glockapps gave faster marketing-facing DMARC and inbox placement feedback.

Ava Chen

System Administrator

Published 5 Nov 2025

Updated 2 Jun 2026

8 min read

Summarize with

MXtoolbox

Email diagnostics and DMARC delivery monitoring

Starts at

Free; paid from $129 / month

Best fit

Technical IT teams that own DNS, reputation, and escalation

In one line

MXtoolbox ties DMARC reporting to a broad DNS and reputation workbench, but source ownership needs more manual interpretation.

Glockapps

DMARC analytics and inbox placement testing

Starts at

Free; DMARC-only paid from $55 / month

Best fit

Marketing-led teams that need DMARC next to campaign checks

In one line

Glockapps makes DMARC traffic and inbox placement easier to read, but policy movement and hosted records stay lighter.

Suped

The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.

Learn more

Pick by operating model, not by star rating

Pick MXtoolbox if

Best for technical teams that want DNS diagnostics with DMARC reporting

The primary domain onboarding exposed MX, SPF, DKIM, and DMARC record issues in one workflow.

The spoof sample and blocklist (blacklist) checks sat close to the same investigation queue.

Delivery Center Plus gave the clearest path when SPF flattening became a blocker.

Free plan available

Read review

Pick Glockapps if

Best for marketing teams that need DMARC plus inbox placement checks

Microsoft 365 and Google Workspace seed results were easier for marketers to read.

SendGrid and Mailchimp were grouped quickly once the DMARC reports started flowing.

The forwarded SPF failure was visible, but the fix path needed interpretation.

Free plan available

Read review

Consider Suped if

Suped's product is the third option for guided fixes, hosted records, and simpler ownership

Guided fixes should turn same-domain SPF, DKIM, and forwarded-mail failures into owner-ready tasks.

Automated issue detection and quieter alerts matter when marketing, support, and IT share a domain.

Published starter pricing starts at $19 / month, with MSP pricing at $7 per domain.

Free plan available

Why Suped

The differences that actually change your week

MXtoolbox

Glockapps

Suped

DMARC report analysis

Turns aggregate reports into domain and sender evidence.

Supported

Source detection

Identifies sending services behind DMARC traffic.

Manual workflow

Clearer grouping

Supported

Forward detection

Separates forwarded mail from direct authentication failures.

Partial

Supported

Spoof detection

Flags unauthorized senders and failed authentication cases.

Supported

Notifications and alerts

Sends operational alerts when records, senders, or reputation change.

Paid tier

Supported

Reporting

Provides recurring reports, exports, and stakeholder-ready views.

Supported

API

Allows programmatic access or automation for reporting workflows.

Paid tier unclear

Custom subscriptions

Supported

Multi-tenancy

Separates clients, domains, roles, and recurring handoff work.

Manual workflow

User roles, limited grouping

Supported

SPF flattening

Manages SPF lookup limits when sender lists grow.

Plus tier

Not supported

Supported

Hosted DMARC

Hosts or manages DMARC records instead of only receiving reports.

Reporting only

Supported

Hosted SPF

Hosts managed SPF records or flattened SPF output.

Plus tier

Not supported

Supported

Hosted MTA-STS

Hosts MTA-STS policy files and related reporting workflow.

Not supported

Supported

Blocklists and reputation

Checks whether IPs or domains appear on blocklists (blacklists) and how reputation changed.

Strong coverage

IP reputation monitors

Supported

Automatic issue detection

Detects authentication problems without waiting for manual report review.

Rule-based

DMARC and inbox checks

Supported

AI copilot

Explains sender problems and recommended fixes in plain language.

Not tested

Supported

DNS monitoring

Monitors DNS and authentication record changes.

Supported

Authentication checks

Supported

Self hostable

Can be installed and operated on customer-owned infrastructure.

Cloud service

Free trial/free tier

Offers a free entry point for testing the workflow.

Free tier

Get started

Ten dimensions, scored from 0 to 10

We scored both products against a fixed editorial rubric after the 90-day setup. Higher is better in every row, and a 0.0 means we did not find support for that capability in the tested workflow.

MXtoolbox leads on diagnostics and reputation checks; Glockapps leads on setup speed and pricing clarity

MXtoolbox won points where DNS diagnostics, blocklist (blacklist) monitoring, SPF flattening, and support escalation were close to the DMARC report work. Glockapps scored higher on onboarding, pricing transparency, and marketing readouts because it classified Microsoft 365, Google Workspace, SendGrid, and Mailchimp quickly. Glockapps lost ground on hosted SPF and MTA-STS, while MXtoolbox lost ground where unknown sender ownership and MSP handoff stayed manual.

MXtoolbox score

64.5/100

Glockapps score

60.5/100

MXtoolbox

64.5/100

DMARC enforcement

7.0

Customer support

7.5

Source resolution

6.5

Setup and onboarding

6.5

MSP workflows

5.0

Alerting and integrations

6.0

Hosted SPF and MTA-STS

4.5

Blocklist monitoring

8.5

Pricing transparency

6.5

Time to enforcement

6.5

Glockapps

60.5/100

DMARC enforcement

6.0

Customer support

6.0

Source resolution

7.0

Setup and onboarding

7.5

MSP workflows

6.5

Alerting and integrations

6.5

Hosted SPF and MTA-STS

0.0

Blocklist monitoring

7.0

Pricing transparency

8.0

Time to enforcement

6.0

Feature set

Depth vs campaign context

MXtoolbox covers more DNS risk. Glockapps covers more campaign context.

MXtoolbox gave us broader diagnostics around DMARC, DNS, SPF, DKIM, and reputation. Glockapps gave us a clearer campaign view by putting DMARC evidence close to inbox placement and sender reports. If guided fixes and automated issue detection are buying criteria, Suped's product should be evaluated on whether it assigns each sender issue to an owner and fix path.

MXtoolbox

4.1/5

Microsoft 365 evidence stayed clear

SPF mismatch showed fast

Unknown sender needed manual tagging

Glockapps

4.1/5

SendGrid grouped with Mailchimp quickly

Google Workspace was easy to verify

Subdomain DKIM pass was clear

MXtoolbox gave us the widest diagnostic surface around the primary corporate domain. Microsoft 365 and Google Workspace showed with enough evidence to confirm same-domain DKIM, but SendGrid and Mailchimp required more manual labeling before the owners were obvious. The unknown sender stayed in a rawer view until we used headers and IP evidence, while the forwarded mail SPF failure was easier to separate once we moved into the DMARC detail.

Glockapps gave cleaner day-to-day DMARC and inbox placement context for the marketing subdomain. SendGrid and Mailchimp appeared in sender groups sooner, Microsoft 365 and Google Workspace were easy to verify, and the unknown sender was quicker to tag as illegal after we compared the failed SPF and DKIM evidence. The same-domain DKIM pass on a subdomain was clear, but p=reject guidance felt noisier than the underlying case demanded.

User experience

Control vs guidance

Glockapps feels faster for operators. MXtoolbox feels safer for technicians.

MXtoolbox asks for more technical confidence, then rewards that with deeper DNS and reputation context. Glockapps gets teams into readable reports faster, but the fix path can flatten different authentication cases into similar advice.

MXtoolbox

4.1/5

Three-domain setup felt technical

Unknown sender required drilldowns

Forwarding needed manual explanation

Glockapps

4.1/5

Fast three-domain onboarding

Unknown sender surfaced quickly

Forwarding explanation was partial

MXtoolbox asked for more technical context during onboarding, which suited the corporate domain but slowed the parked domain. We found the unknown sender through drilldowns and DNS checks, not through a single resolution queue. The forwarded mail SPF failure was explainable after viewing authentication details, but the story needed a person who understood forwarding.

Glockapps got the three domains into DMARC reporting faster and made the marketing subdomain easiest to review each week. The unknown sender appeared in a clearer suspicious-source view, and the forwarded SPF failure was visible without much hunting. The tradeoff was that the explanation did not fully separate forwarding behavior from a sender that needed a DNS fix.

Support

Expert handoff vs self serve

MXtoolbox has clearer escalation. Glockapps keeps setup lighter.

MXtoolbox is the stronger fit when setup depends on DNS handoff, SPF flattening, and a formal escalation path. Glockapps is easier to start without a heavy onboarding motion, but enterprise and API questions moved into custom-plan territory.

MXtoolbox

4.1/5

Dedicated help on Plus

DNS handoff was stronger

Managed path was clearer

Glockapps

4.1/5

Self-serve setup was quick

Escalation felt less formal

Custom API needed sales

MXtoolbox support expectations were clearer once we looked at Delivery Center Plus and managed service paths. For DNS handoff, the guidance gave a better packet for IT on SPF flattening and DMARC policy movement, especially when we needed to explain why the corporate domain should not jump straight to reject. Enterprise onboarding felt more formal, but the self-serve path still left some plan limits and added-domain questions open.

Glockapps suited teams that can self-serve DMARC and inbox placement setup. DNS handoff for Microsoft 365, Google Workspace, SendGrid, and Mailchimp was understandable, but escalation for the unknown sender and forwarded SPF failure felt more like product guidance than an implementation handoff. Enterprise onboarding was lighter; custom subscription and API questions pushed us toward a sales conversation.

Suitability

Enterprise fit vs operator fit

MXtoolbox suits IT-owned delivery. Glockapps suits marketing-led monitoring.

Choose MXtoolbox when DMARC sits with IT, DNS owners, and escalation teams. Choose Glockapps when marketing owns campaign checks and wants DMARC next to inbox placement. If MSP workflows or alert quality are buying criteria, Suped's product should be assessed on client separation, recurring handoff notes, and whether alerts identify owners instead of creating noise.

MXtoolbox

4.1/5

Enterprise DNS teams fit best

Recurring reports needed notes

MSP grouping was manual

Glockapps

4.1/5

SMB marketing fit was strong

Agency bundles helped grouping

Client handoff needed structure

MXtoolbox made most sense for enterprise or mid-market IT teams that already use DNS and reputation checks. Account separation and client grouping were workable but not built around an MSP queue; recurring reports helped, while client handoff still needed notes outside the product. SMBs that only want DMARC analytics will face more tool surface than they need.

Glockapps was a better operator fit for SMBs, agencies, and marketing teams that own campaign health. User roles helped account separation, unlimited DMARC domains made grouping the three test domains easy, and reports were easier to send to campaign stakeholders. For MSPs, client handoff needed more structure because fixes did not become delegated work items.

What each tool feels like after 90 days of real use

MXtoolbox

Best when IT owns DNS, reputation, and enforcement

After 90 days, MXtoolbox felt like a diagnostic workbench with DMARC reporting attached. On the corporate domain, we could move between MX, DNS, SPF, DKIM, DMARC, and blocklist (blacklist) views without changing context, which helped when the spoof sample and the visible-from mismatch arrived in the same week.

That breadth also slowed routine classification. The marketing subdomain's SendGrid and Mailchimp traffic took more manual labeling than expected, and the parked domain was useful for spoof detection but did not need the rest of the toolset every week.

Where it wins

Strong DNS and mail diagnostics

Useful blocklist (blacklist) monitoring

SPF flattening on Plus tier

Clearer managed-service escalation

Where it lags

Unknown sender classification stayed manual

MSP handoff needed outside notes

Pricing add-ons were unclear

Self-serve enforcement guidance felt technical

Pricing

$129 / month paid entry

Free tier

$0 weekly blocklist (blacklist) monitoring

Onboarding

Technical, DNS-first

G2 rating

4.1 / 5

Glockapps

Best when marketing owns campaign checks and DMARC review

After 90 days, Glockapps felt easier for the people running campaigns. The marketing subdomain became the cleanest view: SendGrid and Mailchimp were understandable, inbox placement sat near DMARC evidence, and Microsoft 365 plus Google Workspace checks were readable without a DNS specialist.

The tradeoff appeared when we pushed policy movement and ownership handoff. The forwarded SPF failure, subdomain DKIM case, and unauthorized spoof sample were visible, but the suggested next steps did not always separate IT-owned DNS work from marketer-owned sending fixes.

Where it wins

Fast DMARC onboarding

Clear campaign-facing reports

Useful inbox placement checks

Public DMARC-only pricing

Where it lags

Hosted SPF was absent

Forwarded mail guidance stayed broad

Custom API access needed sales

Overage rules needed careful reading

Pricing

$55 / month DMARC-only paid entry

Free tier

$0 with 10,000 DMARC messages

Onboarding

Fast, marketing-friendly

G2 rating

4.1 / 5

Pricing

MXtoolbox

Glockapps

Suped

Small

1 domain, up to 1k emails / month.

Free covers one domain or IP for weekly blocklist (blacklist) monitoring, not full DMARC reporting.

Free DMARC Analytics covers 10,000 DMARC messages and unlimited domains.

$0 / month

Free plan covers 1 domain and 1,000 monthly emails.

Medium

2 domains, up to 100k emails / month.

$129 / month

Delivery Center covers up to 5 domains and 500,000 messages, so it fits this segment with unused volume.

$55 / month

Standalone DMARC Analytics Essential covers 1,000,000 messages and unlimited domains.

Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.

Large

10 domains, up to 1 million emails / month.

Not publicly listed as of May 15, 2026

Published self-serve tiers list 5 domains; added-domain pricing was not public.

$55 / month

Standalone DMARC Analytics Essential covers 1,000,000 messages; inbox test credits use separate allowances.

10 domains and 1,000,000 monthly emails, with 365 days retention.

Enterprise

Over 20 domains and 1 million emails / month.

Not publicly listed as of May 15, 2026

Managed service and added-domain pricing were not public; published self-serve tiers stop at 5 listed domains.

$199 / month

Standalone DMARC Analytics Enterprise covers 10,000,000 messages and unlimited domains; custom plans handle non-standard API or volume needs.

20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.

No prices were estimated. MXtoolbox and Glockapps dollar amounts are public list prices checked as of May 15, 2026. MXtoolbox large and enterprise rows use a price status because public pages did not list added-domain or managed-service pricing. Glockapps rows use standalone DMARC Analytics monthly pricing where it fit the segment; taxes, overages, and custom terms are excluded.

If you cannot decide between the two, maybe the answer is Suped

Suped

Get started

Guided sender fixes

MXtoolbox exposed the unknown sender and the visible-from mismatch, but we still had to turn evidence into owner tasks; Suped's product turns sender issues into guided fixes for the right domain owner.

Alert routing with context

Glockapps gave useful alerts, but the forwarded SPF failure and p=reject warning needed filtering; Suped's product focuses alerts on the change owner and the authentication case.

MSP-ready handoff

Both products needed extra notes for client handoff during the 90-day test; Suped's product keeps domain grouping, recurring reporting, and MSP workflows closer to the remediation queue.

The difference was significant. We moved from limited visibility to a much clearer dashboard. Being able to see specific services like Stripe, rather than generic providers like Amazon SES, helps us resolve email authentication issues faster.