Free email deliverability
checker
Enter any domain and TLDTrack will check SPF, DKIM, DMARC and BIMI records, blacklist status and resolve every authorisation lookup, in seconds, no signup required.
Email Deliverability Health Check
SPF, DKIM, DMARC, MX, BIMI & blacklist, in one go
5 free checks per day · no signup · takes ~10 seconds
Resolving DNS, checking SPF / DKIM / DMARC / BIMI, scanning blacklists…
Results for
No email-related checks returned for this domain.
Stay on top of these checks automatically
TLDTrack monitors this on a schedule and alerts you the moment something breaks.
What the checker validates
SPF record
Does it exist? Does it parse? Does it stay under the 10-DNS-lookup limit? Does it actually authorise the platforms you send through (Google, Microsoft, SendGrid, etc.)?
DKIM keys
Discover active selectors automatically and validate the public key for each. Catch removed or rotated keys before they break delivery.
DMARC policy
Read your DMARC record, evaluate strength (none / quarantine / reject), check alignment, and confirm RUA/RUF reporting addresses are valid.
BIMI (logo in inbox)
Validate the BIMI record, the SVG markup and the optional Verified Mark Certificate, so your logo actually shows up next to your emails.
Why this matters now
Since February 2024, Google and Yahoo require all bulk senders to authenticate with SPF, DKIM and DMARC. Mail that fails authentication doesn’t go to spam, it gets rejected outright.
If you send order confirmations, password resets, appointment reminders, marketing campaigns or anything else from your domain, this affects you. The checker tells you exactly where you stand.
Want this checked continuously?
A one-off check is a snapshot. Records change, SaaS platforms rotate DKIM keys, DNS edits break SPF, DMARC reports show new threats. TLDTrack monitors all of it on a schedule and alerts you the moment something breaks.
7 days free · cancel anytime
Frequently asked questions
Yes, the basic check costs nothing and requires no signup. The continuous monitoring + alerting + DMARC report parsing is on paid plans (with a 7-day free trial).
No. Anonymous one-off checks are not stored against an account. We may keep aggregate statistics for service quality.
MXToolbox is great for one-off checks. TLDTrack adds continuous monitoring, alerting, DMARC report parsing and integration with your other domain monitoring (uptime, SSL, blacklists) in one dashboard.
For one-off checks, run them individually. For bulk monitoring of 10 or 1,000 domains, sign up for the free trial, everything is monitored automatically.
Explore more of TLDTrack
All features overview
Every check TLDTrack runs and what it costs.
For small business
Plain-English website monitoring for non-technical owners.
For agencies
Manage every client domain in one dashboard.
TLDTrack vs UptimeRobot
Honest feature-by-feature comparison.
Free email deliverability
Free SPF / DKIM / DMARC checker, no signup.
iOS & Android apps
Push alerts the moment something breaks.