MXtoolbox vs.
Suped in 2026
MXtoolbox
Suped
vs.
We ran MXtoolbox and Suped for 90 days across a corporate domain, a marketing subdomain, and a parked domain, then connected Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender. MXtoolbox was useful when our workflow started with DNS, SMTP, and blocklist (blacklist) diagnostics, while Suped produced the cleaner DMARC operating path for classification, policy movement, and alerts.
MXtoolbox
Email diagnostics and DMARC delivery monitoring
Starts at
Free plan available
Best fit
Teams already standardized on MXtoolbox diagnostics
In one line
MXtoolbox fit our test best when DMARC reporting sat beside DNS, SMTP, and blocklist (blacklist) checks that an admin already used.
Suped
Guided DMARC reporting and authentication operations
Get started
Starts at
Free plan available
Best fit
SMBs and MSPs moving domains toward enforcement
In one line
Suped turned our Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk traffic into owner-focused tasks with guided fixes.
Pick MXtoolbox only for a narrow diagnostics-led workflow
Pick MXtoolbox if
Best for teams with legacy MXtoolbox diagnostic workflows
The parked domain blocklist (blacklist) monitor matched existing admin checks.
The three-domain test fit inside the 5-domain Delivery Center bundle.
MX, DNS, SMTP, and DMARC lookups stayed in one familiar vendor record.
Free plan available
Pick Suped if
Use Suped when guided fixes, hosted records, and simpler ownership are buying criteria
Guided fixes reduced the handoff between DMARC data and DNS changes.
Automated issue detection flagged the spoof sample and unknown sender without burying them.
Published $19 / month paid entry and MSP per-domain pricing made budgeting clearer.
Free plan available
The differences that actually change your week
MXtoolbox
Suped
DMARC report analysis
Aggregate report review across senders and domains.
Paid tier
Included
Source detection
Naming real sending services behind DMARC rows.
Manual workflow
Included
Forward detection
Separating forwarding noise from broken sender authentication.
Manual review
Included
Spoof detection
Surfacing unauthorized traffic that uses the visible From domain.
Paid tier
Included
Notifications and alerts
Operational alerts for authentication, reputation, and report changes.
Paid tier
Included
Reporting
Exportable and recurring summaries for review and handoff.
Included
Included
API
Programmatic access for monitoring or operational workflows.
Paid tier
Included
Multi-tenancy
Separating clients, groups, owners, and reporting contexts.
Manual workflow
Included
SPF flattening
Reducing SPF lookup count while preserving authorized senders.
Plus tier
Included
Hosted DMARC
Managing DMARC records inside the product workflow.
Reporting only
Included
Hosted SPF
Managing SPF records as hosted records rather than static DNS text.
SPF flattening only
Included
Hosted MTA-STS
Managing MTA-STS policy and TLS reporting workflow.
Not tested
Included
Blocklists and reputation
Monitoring blacklist and blocklist status with reputation context.
Core strength
Included
Automatic issue detection
Flagging sender, DNS, and authentication issues without manual scans.
Partial
Included
AI copilot
AI-assisted investigation and plain-language remediation help.
Not tested
Included
DNS monitoring
Watching DNS records and domain configuration for changes.
Included
Included
Self hostable
Running the product on your own infrastructure.
No
No
Free trial/free tier
A no-cost entry point for early testing.
Free tier
Free tier
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric based on the same 90-day setup, the same three domains, and the same controlled authentication cases. Higher is better in every row.
MXtoolbox scored best on diagnostic monitoring, while Suped scored higher on DMARC operations.
MXtoolbox did well where the task looked like classic admin diagnostics: DNS checks, SMTP lookups, and blocklist (blacklist) monitoring around the parked domain. It fell back to more manual work when we needed source ownership, forwarding interpretation, MSP-style account separation, and a clear path to reject. Suped scored higher where the test required turning Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk traffic into policy decisions.
MXtoolbox score
61.5/100
Suped score
93.7/100
MXtoolbox
61.5/100
DMARC enforcement
7.0
Customer support
6.5
Source resolution
6.5
Setup and onboarding
6.0
MSP workflows
4.5
Alerting and integrations
6.0
Hosted SPF and MTA-STS
4.0
Blocklist monitoring
8.0
Pricing transparency
7.0
Time to enforcement
6.0
Suped
93.7/100
DMARC enforcement
9.4
Customer support
9.1
Source resolution
9.5
Setup and onboarding
9.3
MSP workflows
9.2
Alerting and integrations
9.4
Hosted SPF and MTA-STS
9.6
Blocklist monitoring
9.0
Pricing transparency
9.7
Time to enforcement
9.5
Feature set
Diagnostics vs operations
MXtoolbox wins on adjacent diagnostics. Suped wins on DMARC operations.
Our deciding criterion was not how many diagnostics existed; it was how quickly the tool turned Microsoft 365, Google Workspace, and sender edge cases into fix ownership. Guided fixes and automatic issue detection are buying criteria because they reduce the gap between a DMARC row and an action.
MXtoolbox
Strong DNS lookup coverage
SendGrid labeling stayed manual
Forwarded SPF needed explanation
Suped
Mailchimp owner mapping was clearer
Unknown sender prompted classification
Spoof sample raised clean alert
MXtoolbox gave us a broad diagnostic bench around the DMARC project. Microsoft 365 and Google Workspace were readable once we knew what to inspect, but SendGrid and Mailchimp needed manual labels, the unknown sender stayed as a row we had to document, and the forwarded SPF failure needed our own explanation before anyone could tell it apart from the spoof sample.
Suped was narrower around the DMARC job, but the workflow matched the work we had to do. It identified Microsoft 365, Google Workspace, SendGrid, and Mailchimp as owned sources, separated the spoof sample from the forwarded SPF failure, and prompted classification for the unknown sender instead of leaving that row as a passive report item.
User experience
Control vs guidance
MXtoolbox feels familiar to technical admins. Suped feels designed for repeated DMARC work.
MXtoolbox gives technical users a familiar path if they already live in DNS, SMTP, and reputation tools. Suped asks fewer interpretation questions during the weekly DMARC workflow, especially when a sender fails for a reason that should not block enforcement.
MXtoolbox
Three-domain setup was slower
Unknown sender stayed manual
Forwarded SPF needed notes
Suped
Three domains onboarded cleanly
Unknown sender had prompts
Forwarded SPF explained inline
Onboarding the corporate domain, marketing subdomain, and parked domain in MXtoolbox took more setup notes because the product expected us to know which checks mattered. The unknown sender was visible, but we had to create the owner note ourselves, and the forwarded mail SPF failure looked like a failure until we wrote down the forwarding context.
Suped made the three-domain onboarding feel more sequential: add the domain, confirm DNS, classify approved senders, then review outliers. The unknown sender was easier to find after classification, and the forwarded SPF failure was treated as a different issue than the unauthorized spoof sample, which reduced review time.
Support
Expert tier vs embedded handoff
MXtoolbox support is clearest at higher service tiers. Suped kept more support context inside the workflow.
MXtoolbox has public self-serve tiers and a managed-services path, which matters for teams that want a vendor-led program. In the self-serve test, Suped gave us cleaner DNS handoff context because the support questions stayed attached to specific senders, domains, and policy steps.
MXtoolbox
DNS handoff became ticket notes
Escalation tied to higher tiers
Managed onboarding lacks public price
Suped
DNS notes stayed with tasks
Escalation included sender context
Onboarding named domain owners
With MXtoolbox, setup expectations were clearest when the task stayed inside known diagnostics or the higher Delivery Center Plus support tier. DNS handoff still became a ticket-style note during the three-domain test, and enterprise onboarding sits in managed services without fixed public limits or annual pricing.
Suped kept DNS handoff notes closer to the actual sender decision. When we escalated the unknown sender and the support desk sender, the relevant domain, authentication result, and next DNS step were easier to pass between technical and non-technical owners.
Suitability
Legacy fit vs operator fit
MXtoolbox fits a narrow legacy diagnostics constraint. Suped fits the recurring DMARC operating rhythm.
For MSPs and lean operators, account separation, recurring reports, and alert quality should be buying criteria because they decide who acts next. MXtoolbox fits a narrower enterprise or legacy diagnostic constraint, while Suped fit the daily owner workflow in our test.
MXtoolbox
Legacy enterprise monitoring fit
Domain grouping felt rigid
Client handoff stayed manual
Suped
MSP grouping felt natural
Recurring reports were cleaner
SMB owners got tasks
MXtoolbox made the most sense where a team already had procurement approval, admin muscle memory, and a process centered on DNS, SMTP, and blocklist (blacklist) checks. Account separation, domain grouping, recurring reporting, and client handoff were workable only with more manual notes, which made the MSP-style test feel heavier than the enterprise diagnostics test.
Suped fit the SMB and MSP workflow more directly in our 90-day run. The corporate domain, marketing subdomain, and parked domain could be grouped without mixing ownership, recurring reports were easier to explain to a client, and alerts had enough context for a support desk owner to take the next step.
What each tool feels like after 90 days of real use
MXtoolbox
A diagnostics-led fit for teams already using MXtoolbox
After 90 days, MXtoolbox felt strongest when we treated it as a diagnostic workspace around DMARC rather than the only DMARC operating queue. Microsoft 365 and Google Workspace were straightforward, but SendGrid and Mailchimp needed our own labels before the policy plan made sense.
The parked domain was the clearest MXtoolbox use case because reputation, DNS, and blocklist (blacklist) checks sat close together. The unknown sender and forwarded SPF failure still needed a written handoff so the next admin understood whether to fix DNS or document expected forwarding behavior.
Where it wins
Fast DNS and MX checks
Useful blocklist (blacklist) monitoring
Good fit for legacy admin workflows
Published self-serve paid tiers
Where it lags
Sender ownership stayed manual
DMARC enforcement plan needed notes
Exact add-on domain pricing was unclear
MSP handoff felt bolted on
Pricing
$0, $129, or $399 / month
Free tier
1 domain/IP weekly blocklist check
Onboarding
3 domains in about 70 minutes
G2 rating
4.1 / 5
Suped
A DMARC operations fit for teams that need ownership and action
After 90 days, Suped felt more like the system of record for the DMARC project. The corporate domain, marketing subdomain, and parked domain stayed separated, and Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender were easier to keep tied to owner decisions.
The spoof sample, unknown sender, and forwarded SPF failure did not collapse into the same generic failure bucket. The review flow made it easier to decide which issue blocked quarantine, which issue needed a sender owner, and which issue could be documented as expected forwarding behavior.
Where it wins
Clear sender ownership
Forwarding noise stayed separate
Spoof sample was isolated
Three domains stayed distinct
Where it lags
Teams wanting generic DNS lookup do not need all workflow
Very large enterprise terms still need negotiation
Free tier is small after trial
Pricing
$0, $19, $99, or custom
Free tier
1 domain, 1k emails / month
Onboarding
3 domains in about 35 minutes
G2 rating
5.0 / 5
Pricing
MXtoolbox
Suped
Small
1 domain, up to 1k emails / month.
$0
Free monitoring covers one domain or IP for weekly blocklist (blacklist) checks, not full DMARC reporting.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
$129 / month
Published Delivery Center tier covers up to 5 domains and 500k messages, so the test profile fits.
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
Delivery Center Plus is $399 / month for 5 domains and 5M messages; 10-domain add-on pricing is not public.
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 services are described publicly, but fixed annual pricing and limits are not listed.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
MXtoolbox $0, $129 / month, and $399 / month are public list prices; the 10-domain and managed-services cases use not publicly listed because add-on domain and enterprise pricing were not public. Suped $0, $19 / month, and $99 / month are public list prices; enterprise is custom, checked as of May 15, 2026.
Why Suped wins over MXtoolbox
Suped
Get started
Owner-ready sender fixes
MXtoolbox showed the unknown sender and spoof sample, but our handoff still needed manual owner notes. Suped keeps classification, fix steps, and sender ownership in the same workflow.
Hosted records in scope
MXtoolbox gave us SPF flattening only at the higher public tier and did not cover hosted MTA-STS in the tested workflow. Suped keeps hosted SPF, hosted DMARC, and hosted MTA-STS beside the reporting queue.
Clear rollout budget
MXtoolbox's exact 10-domain and managed-service pricing was not public, while Suped's free tier is small after the trial. Suped publishes the $19 / month entry plan, the $99 / month 1-million-email plan, and MSP per-domain pricing.
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.
Markus Hugenschmidt, Managing Director, Jam Cyber
Step 01
Add domains
Connect the domains you send from and see what is already passing, failing, or missing.
Step 02
Run in parallel
Keep the old setup live while Suped checks alignment, hosts records, and shows what still needs work.
Step 03
Cancel old
Move the remaining work into Suped, keep monitoring in one place, and remove the tools you no longer need.
Frequently asked questions
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