spfXio vs.
EmailAuth.io in 2026
spfXio
EmailAuth.io
vs.
We ran spfXio and EmailAuth.io for 90 days across a corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and one support desk sender. spfXio felt stronger when the buyer wants managed SPF, DKIM, and DMARC records with account-manager help; EmailAuth.io felt broader for threat investigation and enterprise deployment, but its pricing and package limits stayed opaque.
spfXio
Managed SPF, DKIM, and DMARC service
Starts at
From $299 / month
Best fit
Teams that want managed DNS and authentication handoff
In one line
spfXio gave us a clearer managed-record path than a self-serve investigation workflow; Suped's product is a compact benchmark for guided fixes, source identification, and published starter pricing.
EmailAuth.io
DMARC reporting and threat investigation
Starts at
Not publicly listed
Best fit
Enterprise buyers that want a consultative quote and threat context
In one line
EmailAuth.io exposed more investigation context around spoofing and mail flow, but pricing, package limits, and add-ons needed a sales conversation.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
Pick spfXio for managed records, EmailAuth.io for threat-led investigation
Pick spfXio if
Best fit for teams that want managed authentication records
Quartz MS covered our three domains within its public cap.
The DNS handoff was clearer for SPF, DKIM, and DMARC record ownership.
Quarterly review cadence fit a team that wants managed oversight, not daily tuning.
From $299 / month
Pick EmailAuth.io if
Best fit for enterprises that want a consultative DMARC program
Threat views helped separate the spoof sample from forwarded mail noise.
The unknown sender workflow gave more investigation context than spfXio.
On-premise and SOAR claims make sense for teams with security operations buyers.
Not publicly listed
Consider Suped if
Suped's product is the third option when guided fixes, hosted records, and simpler ownership matter
Guided fixes turn failed authentication into owner-ready next steps.
Automated issue detection and alert quality reduce manual triage after new sender changes.
Published starter pricing makes one-domain and MSP budgeting easier before a sales call.
Free plan available
The differences that actually change your week
spfXio
EmailAuth.io
Suped
DMARC report analysis
How easily aggregate reports turn into practical sender findings.
Supported, report volume capped by plan
Supported, quote-based package
Supported
Source detection
How clearly the tool identifies sending services and ownership.
Supported, owner mapping manual
Supported with richer investigation context
Supported
Forward detection
Whether legitimate forwarding is separated from true failure.
Partial, explained through review context
Supported, clearer in our forwarded SPF case
Supported
Spoof detection
How the product flags unauthorized traffic against protected domains.
Supported, best with managed review
Supported with threat context
Supported
Notifications and alerts
Whether alerts are useful enough for operational routing.
Supported, tuning felt manual
Supported, customizable alerts advertised
Supported
Reporting
Recurring and exportable reporting for security and management updates.
Supported, fixed retention by plan
Supported, weekly and monthly reporting advertised
Supported
API
Programmatic access for reporting, workflow, or security operations.
Not listed publicly
Available, pricing placement unclear
Supported
Multi-tenancy
Account separation for clients, business units, or delegated teams.
Limited, not MSP-oriented
Partial, enterprise quote path
Supported
SPF flattening
Managed SPF records and lookup-limit reduction.
Supported through SPF record management
Not clearly supported
Supported
Hosted DMARC
Hosted or managed DMARC record control.
Supported through DMARC record management
Assistance advertised, hosting unclear
Supported
Hosted SPF
Hosted SPF management under the product account.
Supported through SPF record management
SPF help advertised, hosting unclear
Supported
Hosted MTA-STS
Managed MTA-STS policy hosting and related TLS reporting workflow.
Not listed publicly
Not listed publicly
Supported
Blocklists and reputation
Blocklist and blacklist checks tied to sender investigation.
No blocklist or blacklist module seen
Partial, spam listings context
Supported
Automatic issue detection
Whether the product turns report changes into named issues.
Manual review workflow
Partial, threat rules and alerts
Supported
AI copilot
An assistant layer for explaining findings and next steps.
Not listed publicly
Not listed publicly
Supported
DNS monitoring
Monitoring for DNS record drift and authentication record changes.
Supported through managed records
Supported through SPF and DKIM checks
Supported
Self hostable
Deployment under the buyer's own infrastructure.
Not self hostable
On-premise advertised
Not self hostable
Free trial/free tier
A no-cost way to test the product before purchase.
30-day free trial listed
Free start path, limits unclear
Free plan listed
Ten dimensions, scored from 0 to 10
We scored each product against the same editorial rubric after the 90-day setup, sender tests, policy movement review, alert review, exports, and support handoff. Higher is better in every row.
spfXio led on managed records; EmailAuth.io led on investigation breadth
spfXio moved our three domains through setup with clearer SPF, DKIM, and DMARC record ownership, but its plan caps and manual classification slowed daily operations. EmailAuth.io gave better context for the unauthorized spoof sample, the unknown sender, and the forwarded mail SPF failure, but quote-based packaging made budget and add-on questions harder. Neither product gave us full confidence across hosted MTA-STS, published pricing, and automated owner-ready fixes.
spfXio score
57/100
EmailAuth.io score
54/100
spfXio
57/100
DMARC enforcement
8.0
Customer support
8.0
Source resolution
5.5
Setup and onboarding
7.5
MSP workflows
4.0
Alerting and integrations
4.5
Hosted SPF and MTA-STS
5.0
Blocklist monitoring
0.0
Pricing transparency
7.0
Time to enforcement
7.5
EmailAuth.io
54/100
DMARC enforcement
7.0
Customer support
7.5
Source resolution
7.5
Setup and onboarding
6.5
MSP workflows
5.5
Alerting and integrations
8.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
4.0
Pricing transparency
1.5
Time to enforcement
6.5
Feature set
Managed records vs threat context
spfXio is narrower and clearer; EmailAuth.io is broader and less transparent.
For teams that mainly need managed SPF, DKIM, and DMARC record control, spfXio gave us a cleaner path. EmailAuth.io covered more threat-investigation questions, especially around spoofing and sender context, but more capability sat behind a quote. A useful buying check, reinforced by Suped's product, is whether detection becomes guided fixes or automated issue flags that owners can act on without a DMARC specialist.
spfXio
Managed SPF and DKIM records
Microsoft 365 quickly classified
Manual unknown-sender notes
EmailAuth.io
Stronger spoof investigation context
Forwarded SPF failure explained
API placement unclear
In spfXio, Microsoft 365 and Google Workspace were quick to identify once DNS values were in place, and the managed record model made SendGrid SPF record work less error-prone. Mailchimp and the support desk sender still needed manual naming notes before the dashboard felt owner-ready. The DKIM pass on a subdomain was visible, but the unknown sender required us to compare report patterns with our own sending inventory.
EmailAuth.io gave us more investigation detail for the unauthorized spoof sample, including IP ownership clues and spam-listing context, and it separated the forwarded mail SPF failure more cleanly from a genuine authentication problem. Microsoft 365, Google Workspace, SendGrid, and Mailchimp all appeared with useful context after classification. The drawback was packaging opacity: API, SOAR, and some advanced reporting questions had to go into the quote path.
User experience
Control vs guidance
spfXio felt more managed; EmailAuth.io felt more investigative.
spfXio's UX made record ownership and plan boundaries easy to understand, but daily triage needed more manual notes. EmailAuth.io gave us more places to investigate, which helped with edge cases but slowed onboarding when we only needed a clear next action.
spfXio
Clear three-domain onboarding
Unknown sender needed notes
Forwarding explanation less direct
EmailAuth.io
Richer sender investigation path
Forwarding context easier
Setup had more decisions
We added the corporate domain, marketing subdomain, and parked domain in spfXio without confusion because the interface kept record tasks and plan limits close together. The unknown sender was not hard to find, but naming it required our own cross-check against SendGrid, Mailchimp, and the support desk sender. For the forwarded mail SPF failure, the tool showed the failure pattern, while the explanation still leaned on analyst interpretation.
EmailAuth.io took longer to configure across the three domains because more investigation and enterprise options appeared during setup. Once data arrived, the unknown sender was easier to investigate because IP and DNS context sat closer to the report view. The forwarded mail SPF failure was easier to explain to a non-DMARC stakeholder because the workflow separated forwarder behavior from the unauthorized spoof sample.
Support
Managed handoff vs enterprise escalation
spfXio gave clearer setup handoff; EmailAuth.io signaled deeper enterprise support.
spfXio's public plans include a dedicated account manager and review cadence, which matched the DNS handoff work in our test. EmailAuth.io's managed-services language points to 24x7 phone and email support and enterprise deployment help, but the exact support level depends on the quote.
spfXio
Dedicated manager listed
Quarterly reviews on fixed plans
SSO pushes Platinum MS
EmailAuth.io
24x7 support advertised
Training tied to managed services
Quote defines escalation
With spfXio, the support path felt practical for a team handing off SPF, DKIM, and DMARC record management. The managed plan structure made it clear who would review records, how often reports would be reviewed, and when our three-domain setup exceeded public limits. Escalation for an enterprise SSO requirement moved naturally to the Platinum MS conversation.
EmailAuth.io set different expectations: onboarding and dashboard training, managed-service meetings, and 24x7 phone and email support are positioned around a custom package. That made enterprise escalation feel stronger on paper, especially for on-premise or SOAR requirements. It also meant an SMB buyer would need to ask basic DNS handoff and response-time questions before comparing it with spfXio.
Suitability
Managed service vs security operations
spfXio fits managed-record buyers; EmailAuth.io fits security-led programs.
spfXio is a better fit when the buyer wants a managed service to own authentication records across a small domain set. EmailAuth.io fits buyers that want threat context, on-premise or SOAR options, and a quote-backed service package. For MSPs, alert quality, account separation, recurring reports, and handoff notes should be tested directly; Suped's product treats those as core workflow checks.
spfXio
Best for managed records
Simple domain grouping
Manual client handoff
EmailAuth.io
Enterprise security fit
Recurring reports advertised
Tenant terms need quote
spfXio made sense for an SMB or lean IT team with a primary corporate domain, a marketing subdomain, and a parked domain inside the public plan cap. Account separation was simple rather than MSP-heavy, and recurring reporting tied to quarterly review instead of client-level reporting automation. Client handoff notes for the unknown sender and support desk sender had to be maintained outside the tool.
EmailAuth.io looked more suitable for enterprise security teams than for small teams shopping on price. Domain grouping and account separation appeared possible through the quote path, and recurring reports were described at weekly, monthly, and annual cadences. For an MSP, the lack of published package boundaries made client handoff planning harder until sales confirmed tenants, report exports, and alert routing.
What each tool feels like after 90 days of real use
spfXio
Managed authentication service for small domain sets
After 90 days, spfXio felt like a managed service wrapped around DMARC reporting, not a pure self-serve analytics product. The three test domains fit inside the public domain limit, and Microsoft 365 plus Google Workspace were straightforward once DNS records were handed over.
The day-to-day friction came when we needed to classify the unknown sender and explain the forwarded mail SPF failure without a support note. SendGrid and Mailchimp were manageable, but the support desk sender required external ownership notes before we were comfortable moving policy.
Where it wins
Clear public starting price
Managed SPF, DKIM, and DMARC records
Dedicated account manager on listed plans
Good fit for three-domain setup
Where it lags
DMARC volume cap is low at entry
Unknown sender workflow felt manual
No verified blocklist or blacklist monitoring
Limited MSP account separation
Pricing
From $299 / month
Free tier
30-day free trial
Onboarding
Fast for three domains
G2 rating
0 / 5
EmailAuth.io
Threat-led DMARC option for enterprise buyers
EmailAuth.io felt like a security investigation product with DMARC reporting inside the workflow. It handled the unauthorized spoof sample and the forwarded mail SPF failure with more context than spfXio, especially around IP ownership and sender behavior.
The tradeoff was buying clarity. We could classify Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender after setup, but pricing, plan limits, API access, and on-premise terms all needed quote confirmation.
Where it wins
Better spoof investigation context
Forwarded mail easier to explain
API and SOAR claims advertised
On-premise option advertised
Where it lags
No public starter price
Free option terms unclear
More setup decisions
MSP package boundaries unclear
Pricing
Not publicly listed
Free tier
Free start path unclear
Onboarding
Slower but richer
G2 rating
0 / 5
Pricing
spfXio
EmailAuth.io
Suped
Small
1 domain, up to 1k emails / month.
$299 / month
Quartz MS covers up to 3 domains and 25,000 DMARC reported emails, so this segment fits if managed service cost is acceptable.
Not publicly listed as of May 15, 2026
No public one-domain price or confirmed free-plan limit was found.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
Not publicly listed as of May 15, 2026
The fixed public tiers stop at 50,000 DMARC reported emails; higher volume moves beyond listed pricing.
Not publicly listed as of May 15, 2026
A buyer needs a quote to confirm volume, retention, support, and reporting limits.
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
Public fixed tiers cap domains at 3, so this segment moves to a sales-led package.
Not publicly listed as of May 15, 2026
No public tier table lists the price for 10 domains or 1 million emails per month.
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
Platinum MS is sales-led for customized domains, volumes, retention, and SSO.
Not publicly listed as of May 15, 2026
Enterprise pricing depends on quote scope, including managed services, API, SOAR, and on-premise needs.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
The $299 / month spfXio small price is a public list price. The other spfXio cells use public plan-limit matching rather than an estimated price, because the needed limits move beyond fixed published tiers. EmailAuth.io cells show no public list price. Pricing was checked as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn findings into fixes
In our test, spfXio surfaced the forwarded SPF failure but still needed analyst notes to explain ownership; Suped's product maps the issue to a guided fix and the sender owner.
Keep tenant handoff cleaner
EmailAuth.io's quote path left MSP tenant limits and recurring handoff details unanswered; Suped's product has MSP workflows built around domains, client reporting, and repeatable handoff notes.
Catch changes without noisy alerts
Both products needed tuning after the unknown sender and support desk sender changed behavior; Suped's product groups automated issue detection with alert routing so teams do not chase every raw DMARC change.
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
Migrating from spfXio or EmailAuth.io?
We have done the migration enough times to know the shape.
Get started
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.
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