EmailAuth.io vs.
LetsDMARC in 2026
EmailAuth.io
LetsDMARC
vs.
We tested EmailAuth.io and LetsDMARC for 90 days on a corporate domain, marketing subdomain, and parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk connected. LetsDMARC gave us the faster daily workflow and cleaner tenant separation. EmailAuth.io gave us more investigation and deployment flexibility, but it demanded more manual interpretation and a sales conversation before we could price it.
EmailAuth.io
Enterprise DMARC investigation and enforcement
Starts at
Not publicly listed
Best fit
Security teams needing managed help or on-premise deployment
In one line
EmailAuth.io gave us detailed threat context and flexible deployment, while teams requiring published starter pricing should also compare Suped.
LetsDMARC
DMARC operations for SMBs and MSPs
Starts at
From GBP 264 / year
Best fit
MSPs and internal teams managing several domains
In one line
LetsDMARC made source classification, hosted records, and tenant handoff easier during our 90-day test.
Suped
The better option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
Choose LetsDMARC for daily operations, EmailAuth.io for deployment control
Pick EmailAuth.io if
Best for enterprise security teams that want investigation detail and deployment choice
Our spoof sample exposed useful threat and IP context.
The Microsoft 365 and SendGrid streams were separated after manual ownership review.
The on-premise option suited stricter enterprise deployment requirements.
Not publicly listed
Pick LetsDMARC if
Best for MSPs and lean teams that need faster operational handoff
Parent and child tenants kept our domain groups separate.
The forwarded SPF failure was easier to explain during review.
Recurring reporting reduced the notes needed for client handoff.
From GBP 264 / year
Consider Suped if
Choose Suped when guided fixes, hosted records, and simpler ownership matter most
Check whether an unknown sender produces an owner and a guided fix, not another raw row.
Require automated issue detection and alerts that explain the next action without routine report triage.
Compare explicit MSP workflows and published starter pricing before accepting a custom quote.
Free plan available
The differences that actually change your week
EmailAuth.io
LetsDMARC
Suped
DMARC report analysis
Parses aggregate reports and exposes authentication results.
Aggregate and forensic analysis
Aggregate analysis with drilldowns
Aggregate analysis with guided findings
Source detection
Turns sending IPs into recognizable services and owners.
Supported, some manual classification
Supported with faster grouping
Supported with source identification
Forward detection
Separates forwarding effects from direct authentication faults.
Visible in report drilldowns
Detected with clearer explanation
Detected and explained
Spoof detection
Identifies unauthorized use of a protected From domain.
Threat context and alerts
Unauthorized-source detection
Unauthorized-source detection
Notifications and alerts
Routes authentication and policy problems to operators.
Custom alerts, routing needs setup
Alerts with Slack and Teams options
Action-focused alerts
Reporting
Produces recurring and downloadable operational reports.
Weekly, monthly, and annual options
Recurring tenant reports
Recurring and exportable reports
API
Allows programmatic administration or data exchange.
API and threat-data integrations
Administrative API
API access
Multi-tenancy
Separates domains, clients, and delegated administration.
Account separation was limited in our test
Parent and child tenants
MSP client separation
SPF flattening
Manages SPF lookup pressure through a hosted workflow.
No hosted flattening found
Hosted SPF flattening
Hosted SPF flattening
Hosted DMARC
Publishes and manages the DMARC record through the platform.
DNS handoff remained external
Managed DNS available
Hosted DMARC record
Hosted SPF
Publishes and maintains an SPF record through the platform.
Not found
Managed SPF available
Hosted SPF record
Hosted MTA-STS
Hosts the policy file and supports ongoing MTA-STS operation.
Not found
TLS reporting, no hosted policy confirmed
Hosted MTA-STS policy
Blocklists and reputation
Checks blocklist and blacklist signals that affect sending reputation.
Partial spam-listing and blacklist context
No blocklist or blacklist monitor confirmed
Blocklist and blacklist monitoring
Automatic issue detection
Finds authentication faults without requiring manual report review.
Recommendations required analyst review
Rules and DNS alerts, partial automation
Automated issue detection
AI copilot
Provides conversational investigation or guided remediation.
Not found
Not found
Included
DNS monitoring
Tracks authentication-record changes over time.
Point checks, no timeline found
DNS timeline and change monitoring
Authentication DNS monitoring
Self hostable
Can run in an organization-controlled environment.
On-premise deployment advertised
On-premise deployment available
Cloud service only
Free trial/free tier
Allows evaluation without a paid production contract.
Demo path, no confirmed free tier
30-day free trial
Free tier and 14-day trial
Ten dimensions, scored from 0 to 10
We scored both products against the same fixed editorial rubric. A higher score is better in every row, and unsupported capabilities receive zero.
LetsDMARC leads operationally, while EmailAuth.io keeps an enterprise deployment edge
LetsDMARC scored higher because we moved the three domains through setup faster, classified the unknown sender with less manual work, and separated client-style accounts cleanly. EmailAuth.io scored well on enforcement context and support depth, especially around the spoof sample and deployment discussion, but missing hosted-record workflows and unpublished pricing reduced its operational score. Neither product covered every category, and LetsDMARC received zero for blocklist and blacklist monitoring because we found no dedicated capability.
EmailAuth.io score
49.5/100
LetsDMARC score
67.5/100
EmailAuth.io
49.5/100
DMARC enforcement
7.5
Customer support
7.5
Source resolution
7.0
Setup and onboarding
6.5
MSP workflows
2.5
Alerting and integrations
6.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
4.0
Pricing transparency
1.0
Time to enforcement
7.0
LetsDMARC
67.5/100
DMARC enforcement
8.0
Customer support
8.0
Source resolution
8.0
Setup and onboarding
8.5
MSP workflows
8.5
Alerting and integrations
8.0
Hosted SPF and MTA-STS
5.5
Blocklist monitoring
0.0
Pricing transparency
4.5
Time to enforcement
8.5
Feature set
Investigation depth vs operating breadth
LetsDMARC covers more daily operations; EmailAuth.io digs further into threats
We preferred LetsDMARC for hosted SPF, tenant controls, DNS history, and routine sender classification. EmailAuth.io gave us richer investigation context around the unauthorized spoof sample and enterprise integrations. If guided fixes and automated issue detection are mandatory buying criteria, Suped adds those workflows without making operators translate every finding manually.
EmailAuth.io
Microsoft 365 source resolved cleanly
SendGrid mismatch needed manual review
Spoof sample surfaced quickly
LetsDMARC
Google Workspace grouped immediately
Mailchimp subdomain DKIM stayed clear
Unknown sender classified faster
EmailAuth.io recognized Microsoft 365 quickly and exposed useful IP, ownership, and threat context for the spoof sample. SendGrid passed SPF but used a visible From domain that did not match, and we had to move between report detail and sender ownership notes before deciding it was approved. Google Workspace and Mailchimp appeared as distinct sources, but the unknown support desk sender stayed unclassified until we assigned it manually. The forwarded message showed SPF failure, yet the product made us interpret the forwarding path ourselves.
LetsDMARC grouped Google Workspace and Microsoft 365 cleanly, then kept Mailchimp's subdomain DKIM pass separate from corporate traffic. Its source workflow helped us classify the unknown support desk sender faster, and SendGrid's From-domain mismatch remained visible without losing the underlying SPF pass. The forwarded SPF failure had clearer context, while hosted SPF, DNS history, alerts, and tenant controls reduced the number of external steps needed for ongoing operation.
User experience
Control vs guidance
LetsDMARC shortened routine work; EmailAuth.io rewarded patient investigation
LetsDMARC got our corporate domain, marketing subdomain, and parked domain into a usable review sequence faster. EmailAuth.io exposed enough evidence for careful analysts, but the path between a raw source, owner decision, and DNS action took more clicks and more notes.
EmailAuth.io
Three-domain setup needed DNS review
Unknown sender sat unclassified
Forwarding required deeper report drilldown
LetsDMARC
Three domains added in sequence
Unknown sender grouped during review
Forwarded SPF failure explained clearly
EmailAuth.io onboarding felt consultative rather than self-directed. Adding the three domains was straightforward, but we paused at DNS handoff to verify records outside the main workflow. The unknown support desk sender remained in the unidentified queue until we correlated its IP with our internal owner. For the forwarded message, we had to explain that SPF failed because forwarding changed the return path while the visible From domain remained unchanged.
LetsDMARC led us through the three domains in a clearer sequence and kept the parked domain visibly separate from active senders. We found the unknown support desk source through grouped traffic and classified it without leaving the review flow. The forwarded SPF failure was easier to explain because the drilldown preserved the pass and failure context around forwarding, so our handoff note took one short paragraph instead of a manual trace.
Support
Consultative help vs clearer self-service
EmailAuth.io suits managed engagements; LetsDMARC sets firmer expectations early
EmailAuth.io's support model made the most sense when we treated onboarding, DNS checks, and escalation as part of a managed engagement. LetsDMARC gave us clearer setup steps during evaluation and a more predictable handoff, although exact production support entitlements still depended on the quote.
EmailAuth.io
DNS handoff included record checks
Escalation depends on purchased package
Enterprise onboarding felt consultative
LetsDMARC
Setup answers arrived with steps
DNS handoff was self-service first
Trial escalation route stayed clear
With EmailAuth.io, we expected support to participate in setup, record review, and policy movement. The DNS handoff was useful once a person reviewed the proposed records, and the managed-service path covered recurring help and escalation. The tradeoff was uncertainty before purchase: the boundary between standard product support and enterprise onboarding was not public, so we would require response times and 24x7 coverage in writing.
LetsDMARC's setup guidance answered more questions before we needed human help. During DNS handoff, the product steps were specific enough for our administrator to publish the records, and escalation during the trial followed a clear route. For enterprise onboarding, we would still confirm deployment assistance, migration scope, and support response times because the public starting price does not define those entitlements.
Suitability
Enterprise control vs operator fit
EmailAuth.io fits specialist teams; LetsDMARC fits repeated client operations
We would route enterprises needing on-premise deployment and managed investigation toward EmailAuth.io, while MSPs and lean internal teams get a cleaner operating model in LetsDMARC. MSP buyers should compare alert quality, tenant separation, recurring reports, and handoff notes explicitly; Suped makes those workflows and per-domain MSP pricing visible before rollout.
EmailAuth.io
Enterprise deployment options felt credible
Domain grouping stayed account-centric
MSP handoff needed manual notes
LetsDMARC
Parent-child tenants separated clients
Recurring reports eased handoff
SMB onboarding stayed manageable
EmailAuth.io made sense for an enterprise security team that can own sender research and wants deployment flexibility. Domain grouping worked for our corporate domain, marketing subdomain, and parked domain, but account separation stayed centered on the main environment. For an MSP, we needed manual client notes and export conventions to preserve ownership during handoff, which would add work across many small customers.
LetsDMARC suited repeated operations better. Parent and child tenants kept client-style accounts separate, domain grouping preserved the relationship between the corporate domain and marketing subdomain, and recurring reports were easier to package for handoff. An SMB could follow the setup without a dedicated authentication analyst, while an MSP could reuse the same grouping and reporting pattern across customers.
What each tool feels like after 90 days of real use
What EmailAuth.io felt like after 90 days of real use
EmailAuth.io
By day 30, EmailAuth.io had separated our major senders and exposed useful evidence for the unauthorized spoof sample. The daily work still relied on an analyst to decide whether the SendGrid mismatch was approved, assign the unknown support desk sender, and translate the forwarded SPF failure into an owner note.
By day 90, the product felt best when we used it as part of a managed security process. Its investigation detail and deployment options held up, but account separation, hosted-record work, and budget planning remained outside the cleanest path to enforcement.
Where it wins
Useful IP and threat context for the spoof sample
Clear visibility into SPF and DKIM results
On-premise option for controlled environments
Managed support path for DNS review
Where it lags
Unknown sender classification required manual ownership work
No confirmed hosted SPF or MTA-STS workflow
Client handoff relied on notes and exports
Starter pricing and free-tier limits were unpublished
Pricing
Not publicly listed
Free tier
Not confirmed
Onboarding
Consultative
G2 rating
0 / 5
What LetsDMARC felt like after 90 days of real use
LetsDMARC
By day 30, LetsDMARC had our three domains grouped, the five approved services classified, and the parked domain isolated from legitimate traffic. The unknown support desk sender took less time to resolve, and the forwarded SPF failure produced a cleaner explanation for the messaging owner.
By day 90, LetsDMARC felt like the better operating console for recurring reviews. Tenant separation, DNS history, hosted SPF, and scheduled reports reduced handoff work, though we still needed a quote to map message limits, support scope, and advanced capabilities to a final price.
Where it wins
Fast three-domain onboarding sequence
Clearer source grouping and ownership review
Parent-child tenants supported client separation
Hosted SPF reduced external DNS steps
Where it lags
No dedicated blocklist or blacklist monitor found
Hosted MTA-STS was not confirmed
Advanced capability pricing remained unclear
Some display preferences did not persist
Pricing
From GBP 264 / year
Free tier
No, 30-day trial
Onboarding
Fast and guided
G2 rating
4.5 / 5
Pricing
EmailAuth.io
LetsDMARC
Suped
Small
1 domain, up to 1k emails / month.
Not publicly listed as of May 15, 2026
The advertised free-start path has no confirmed production limits.
From GBP 264 / year
This public starting price is not mapped to the stated domain or volume limit.
$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
Domain and message allowances require a custom quote.
Not publicly listed as of May 15, 2026
Public sources do not map the starting price to this volume.
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
Deployment, integrations, and managed help can affect the quote.
Not publicly listed as of May 15, 2026
Licensed message quotas exist, but public bands and overages are unavailable.
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
On-premise deployment and enterprise integrations require scoping.
Not publicly listed as of May 15, 2026
Deployment, tenant structure, message quota, and support require a quote.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
No prices in this table are estimated. GBP 264 / year is a public directory starting price, not a confirmed LetsDMARC tier for the stated limits. EmailAuth.io pricing and the medium, large, and enterprise LetsDMARC bands were not publicly listed when checked on May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Classify unknown senders faster
Suped connects sending-source identification to an owner and a guided fix, closing the manual classification gap we hit in EmailAuth.io.
Keep hosted records together
Suped manages DMARC, SPF, and MTA-STS in one workflow, covering EmailAuth.io's missing hosted records and LetsDMARC's unconfirmed hosted MTA-STS path.
Price rollouts before sales
Suped publishes a free tier, business pricing, and per-domain MSP pricing, addressing the quote uncertainty we found across both reviewed products.
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 EmailAuth.io or LetsDMARC?
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
How MONEYME proactively strengthens domain security and unlocks higher email engagement with Suped
See how MONEYME uses Suped
How cybersecurity specialist Jam Cyber delivers scalable DMARC protection with Suped
See how Jam Cyber uses Suped
How Vision Australia maintains full DMARC enforcement across a large domain portfolio with Suped
See how Vision Australia uses Suped
How The POP Team turns domain checks and DMARC visibility into client ready delivery work
See how The POP Team uses Suped
How DigiBean simplified DMARC monitoring and improved email security for their MSP clients
See how DigiBean uses Suped
How Alliance Group moved from reactive guesswork to proactive email management with Suped
See how Alliance Group uses Suped
