Send-Shield vs.
spfXio in 2026
Send-Shield
spfXio
vs.
We tested Send-Shield and spfXio for 90 days across a corporate domain, a marketing subdomain, and a parked domain. Send-Shield felt closer to a DMARC reporting and enforcement service, while spfXio felt more like a managed DNS authentication service with DMARC reporting attached.
Send-Shield
Managed DMARC reporting and enforcement
Starts at
From £19.99 / month
Best fit
Teams that want structured DMARC rollout with human implementation help
In one line
Send-Shield gave us clearer policy movement and threat review, but its lowest tier kept setup and reporting fairly limited.
spfXio
Managed SPF, DKIM, and DMARC service
Starts at
From $299 / month
Best fit
Organizations that want managed SPF and DKIM ownership with quarterly review
In one line
spfXio handled SPF and DKIM ownership cleanly, but DMARC investigation relied more on service review than in-product guidance.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
Choose by ownership model, not dashboard taste
Pick Send-Shield if
Best fit for security teams that want managed DMARC policy movement
It separated the Microsoft 365 and Google Workspace streams quickly, then flagged the SendGrid and Mailchimp traffic as approved bulk sources once we confirmed ownership.
The unauthorized spoof sample surfaced in the threat view with a clear reason to hold reject until the marketing subdomain passed DKIM consistently.
Core and higher plans made DNS handoff easier because implementation support was part of the workflow, unlike the self-setup Starter path.
From £19.99 / month
Pick spfXio if
Best fit for teams that want managed SPF and DKIM records with DMARC review
It treated SPF, DKIM, and DMARC records as managed service objects, which helped when the support desk sender needed a clean SPF include path.
The SPF pass with visible from mismatch was easier to explain during review than inside the report screen itself.
The three-domain public limit fit our test setup, but the 25k DMARC reported email limit on Quartz MS felt tight for active marketing traffic.
From $299 / month
Consider Suped if
A third option when guided fixes, hosted records, and simpler ownership matter
Suped's product gives guided fixes after source classification, which matters when a team needs the next DNS action rather than only a pass or fail state.
Automated issue detection and alert quality should be buying criteria when forwarded SPF failures and spoof samples need different urgency.
Published starter pricing and MSP per-domain pricing reduce the back and forth when comparing small, medium, and client-account use cases.
Free plan available
The differences that actually change your week
Send-Shield
spfXio
Suped
DMARC report analysis
Aggregate XML processing, authentication result grouping, and domain-level report review.
Supported with tiered reporting depth
Supported as part of managed service
Supported
Source detection
Turning raw sending IPs and domains into recognizable services and owners.
Good for common business senders
Partial, review-led classification
Supported
Forward detection
Separating forwarding-related SPF failure from unauthorized sending.
Detected with manual review
Explained during service review
Supported
Spoof detection
Identifying unauthenticated mail that claims to be from the protected domain.
Supported with threat monitoring
Supported in DMARC reporting
Supported
Notifications and alerts
Operational alerts for authentication changes, threats, and reporting anomalies.
Supported, more useful on higher tiers
Manual workflow with review cadence
Supported
Reporting
Recurring summaries, exports, and drilldowns for technical and non-technical stakeholders.
Tiered reports and exports
Quarterly or monthly review by plan
Supported
API
Programmatic access for operational workflows and external reporting.
Not publicly clear
Not publicly clear
Supported
Multi-tenancy
Account separation, client grouping, and delegated access.
Partial account separation
Partial, domain and user limits apply
Supported
SPF flattening
Managed SPF records or flattening to reduce DNS lookup pressure.
Not tested
Supported through managed SPF
Supported
Hosted DMARC
Hosted DMARC record management or managed DMARC DNS changes.
Implementation support on paid tiers
Managed DMARC record service
Supported
Hosted SPF
Managed SPF record hosting or service-controlled SPF updates.
Not tested
Supported
Supported
Hosted MTA-STS
Hosted MTA-STS policy and TLS reporting workflow.
Not publicly listed
Not publicly listed
Supported
Blocklists and reputation
Blocklist (blacklist) and reputation monitoring for sending domains or IPs.
Threat intelligence on Enterprise
Not publicly listed
Supported
Automatic issue detection
Automatic flagging of misconfigured, failing, or changed authentication sources.
Supported with manual confirmation
Partial, service-led workflow
Supported
AI copilot
AI-assisted interpretation, triage, or fix guidance.
Not publicly listed
Not publicly listed
Supported
DNS monitoring
Ongoing monitoring for SPF, DKIM, DMARC, and related DNS changes.
Supported for authentication records
Supported through managed records
Supported
Self hostable
Ability to run the product in your own infrastructure.
No
No
No
Free trial/free tier
A public no-cost trial or ongoing free entry plan.
14-day free trial
30-day free trial
Free plan available
Ten dimensions, scored from 0 to 10
Each product was scored against a fixed editorial rubric using the same three domains, connected senders, authentication cases, reporting tasks, support checks, and pricing review. Higher is better in every row.
Send-Shield scored higher on DMARC enforcement, while spfXio scored higher on managed SPF ownership.
Send-Shield gave us a clearer path from monitoring to quarantine because its report review tied the spoof sample, forwarded SPF failure, and subdomain DKIM case back to policy readiness. spfXio was stronger when the task was keeping SPF and DKIM records managed, especially for the support desk sender, but its DMARC investigation felt more dependent on scheduled review. Pricing transparency was better for both than many sales-led tools, although spfXio's higher entry price and lower listed DMARC volume made the small-domain scenario harder to justify.
Send-Shield score
65/100
spfXio score
53/100
Send-Shield
65/100
DMARC enforcement
8.0
Customer support
7.5
Source resolution
7.0
Setup and onboarding
7.0
MSP workflows
5.5
Alerting and integrations
6.0
Hosted SPF and MTA-STS
2.0
Blocklist monitoring
6.5
Pricing transparency
8.0
Time to enforcement
7.5
spfXio
53/100
DMARC enforcement
6.0
Customer support
7.0
Source resolution
5.5
Setup and onboarding
6.5
MSP workflows
5.0
Alerting and integrations
4.5
Hosted SPF and MTA-STS
6.0
Blocklist monitoring
0.0
Pricing transparency
6.5
Time to enforcement
6.0
Feature set
DMARC depth vs DNS ownership
Send-Shield is stronger for DMARC enforcement work. spfXio is stronger for managed SPF and DKIM ownership.
Send-Shield did more inside the DMARC reporting workflow, especially when we had to separate the unauthorized spoof sample from forwarded mail with SPF failure. spfXio was better when the work centered on managed SPF, DKIM, and DMARC records, but buyers should check how much guided fixing and automated issue detection they need before choosing a record-management-first service.
Send-Shield
Clear Microsoft 365 grouping
Mailchimp source approval trail
Mismatch case explained
spfXio
Managed SPF and DKIM
Google Workspace records clear
Unknown sender review-led
Send-Shield recognized Microsoft 365 and Google Workspace cleanly, then grouped SendGrid and Mailchimp as approved services after we confirmed their domain-match paths. The unknown sender required manual classification, but the report trail made it clear which IPs, DKIM domains, and visible from values drove the decision. The DKIM pass on the marketing subdomain was shown as authenticated but not enough for parent-domain readiness until we reviewed the DKIM domain match.
spfXio handled the connected services through a managed record lens, so SPF and DKIM changes for the support desk sender were easier to track than pure DMARC source investigation. Microsoft 365 and Google Workspace were clear enough, but the unknown sender took more review because the product leaned on service cadence and record management rather than a guided triage queue. The SPF pass with visible from mismatch was documented correctly, although the action path lived more in the review process than the reporting screen.
User experience
Policy workflow vs service workflow
Send-Shield is easier for daily DMARC review. spfXio is easier when record changes are the main job.
Send-Shield gave us a more direct route through daily report review, sender approval, and policy readiness. spfXio felt calmer for DNS ownership, but the unknown sender and forwarded SPF failure took longer to explain without leaning on the managed service review.
Send-Shield
Three domains added quickly
Unknown sender drilldown clear
Forwarding separated from spoofing
spfXio
DNS setup felt controlled
Three-domain limit matched test
Forwarding needed review
Send-Shield onboarding for the corporate domain, marketing subdomain, and parked domain took one work session, with the parked domain reaching a reject recommendation fastest because legitimate traffic stayed at zero. The unknown sender was not auto-labeled with enough confidence, but the drilldown exposed enough identifiers for us to classify it. Forwarded mail with SPF failure was visible as a separate pattern, which helped avoid treating it like spoofing.
spfXio onboarding was more guided around DNS record control than dashboard exploration, which helped when we connected SPF-heavy services. The three-domain test matched Quartz MS limits, but switching between the corporate domain, marketing subdomain, and parked domain felt more administrative than investigative. The forwarded SPF failure was explainable after review, although the UI did not make that distinction as quickly during daily triage.
Support
Implementation help vs managed service cadence
Send-Shield has the clearer DMARC support path. spfXio has the clearer record-management handoff.
Send-Shield's support model made more sense once we moved beyond Starter because implementation help, meetings, and account management became part of the paid path. spfXio's dedicated account manager model was useful for SPF and DKIM handoff, but escalation timing depends on the review cadence and plan level.
Send-Shield
Implementation support above Starter
Clear DNS handoff notes
Enterprise support stronger
spfXio
Dedicated account manager included
Record handoff is concrete
Escalation tied to tier
Send-Shield's Starter tier put more responsibility on us for DNS setup, which was workable for one domain but less comfortable with the marketing subdomain and support desk sender. On higher tiers, the implementation path was clearer: handoff notes could say which SPF include, DKIM selector, or DMARC policy step needed action. Enterprise onboarding looked better suited to larger security teams because premium support and advanced threat intelligence sat there.
spfXio made the DNS handoff feel concrete because SPF, DKIM, and DMARC record management were core service items even at Quartz MS. The dedicated account manager model helped with the support desk sender, where SPF request limits and DKIM records needed owner confirmation. Enterprise escalation was less transparent because Platinum MS moved pricing, limits, SSO, and monthly report review into a sales-led tier.
Suitability
Enterprise fit vs operator fit
Send-Shield fits DMARC-focused teams better. spfXio fits teams that outsource record ownership.
Send-Shield is the better fit when the buyer wants DMARC policy movement, threat review, and recurring reports for internal stakeholders. spfXio fits teams that want fewer internal DNS tasks, but MSPs should look closely at account separation, alert quality, and client handoff workflows before committing to a managed-service structure.
Send-Shield
Best for internal teams
Recurring reports are usable
MSP fit is partial
spfXio
Best for DNS outsourcing
Three-domain plans constrain MSPs
Review cadence supports SMBs
Send-Shield worked best for a security or IT team managing its own corporate domain and marketing subdomain, especially where recurring DMARC reports had to explain SendGrid, Mailchimp, and Microsoft 365 activity. Account separation was usable for our test domains, but it did not feel purpose-built for an MSP with many clients, recurring branded reports, and delegated client handoff. SMBs with one low-volume domain could use Starter, but self setup limits the value if they need help.
spfXio was strongest for SMB and mid-market teams that want SPF, DKIM, and DMARC record ownership handled as a service. The three-domain cap on Quartz MS and Diamond MS fit our test but felt restrictive for an MSP managing many small client domains. Recurring reporting made sense for quarterly or monthly review, although day-to-day client handoff and urgent alert triage felt less immediate than a multi-tenant operational queue.
What each tool feels like after 90 days of real use
Send-Shield
A DMARC enforcement tool for teams that want review plus policy movement
After 90 days, Send-Shield felt most useful during weekly DMARC review. The dashboard gave us enough evidence to separate Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender without losing the authentication reason behind each approval.
The enforcement story was practical. We would have moved the parked domain to reject first, held the marketing subdomain while DKIM domain matching stabilized, and kept the corporate domain at quarantine until the forwarded SPF failure and unknown sender were documented.
Where it wins
Clear policy movement path
Useful sender drilldowns
Good spoof sample visibility
Published GBP entry pricing
Where it lags
Starter relies on self setup
Limited low-tier data history
Hosted SPF was not evident
MSP workflows felt partial
Pricing
From £19.99 / month
Free tier
14-day free trial
Onboarding
Fast for three domains
G2 rating
0 / 5
spfXio
A managed authentication service for teams that want SPF and DKIM ownership handled
After 90 days, spfXio felt strongest when the work was DNS ownership. The support desk sender needed SPF and DKIM cleanup, and spfXio's managed record model made that handoff easier to describe than a pure reporting-only workflow.
The DMARC reporting side was usable, but daily investigation took more manual interpretation. The SPF pass with visible from mismatch and forwarded mail with SPF failure were correctly understood after review, yet the path to a confident policy change was slower than in a DMARC-first workflow.
Where it wins
Managed SPF ownership is clear
DKIM record work is structured
Dedicated account manager included
Public 30-day trial
Where it lags
High public entry price
Low listed DMARC volume
Unknown sender took review
No public blocklist monitoring
Pricing
From $299 / month
Free tier
30-day free trial
Onboarding
Record-led and deliberate
G2 rating
0 / 5
Pricing
Send-Shield
spfXio
Suped
Small
1 domain, up to 1k emails / month.
£19.99 / month
Starter covers 1 active domain and up to 10k DMARC capable messages, billed annually.
$299 / month
Quartz MS covers up to 3 domains and 25k DMARC reported emails.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
£49.99 / month
Core covers up to 2 active domains and 100k DMARC capable messages, billed annually.
Custom
Public fixed tiers list 25k or 50k DMARC reported emails, so 100k needs a larger quoted plan.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
From £699 / month
Enterprise starts at 15 active domains and 5M DMARC capable messages.
Custom
Platinum MS is required because public fixed plans cap domains and DMARC report volume below this case.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
Custom
Published Enterprise starts at 15 active domains, so larger estates need final quoted pricing.
Custom
Platinum MS uses customized domains, limits, retention, and review cadence.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Send-Shield prices are public list prices checked as of May 15, 2026 and are billed annually in GBP. spfXio Quartz MS and Diamond MS are public list prices checked as of May 15, 2026; Custom rows are estimates based on public tier limits and the sales-led Platinum MS tier.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Guided fixes after classification
Send-Shield exposed the unknown sender evidence, but the next fix still needed manual interpretation. Suped's product connects sender identification to the DNS or policy action a team needs to take.
Hosted records without review lag
spfXio was strong at managed SPF and DKIM ownership, but DMARC decisions leaned on scheduled review. Suped's product pairs hosted SPF, hosted DMARC, and hosted MTA-STS with live issue detection.
Cleaner MSP handoff
Both products felt partial for MSP workflows in the test. Suped's product gives client separation, recurring reports, and per-domain MSP pricing for teams that manage many smaller domains.
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 Send-Shield or spfXio?
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.
Frequently asked questions
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