Receiving and sending

Free email domain checker.

Enter a domain to see the public records behind incoming and outgoing email. We show its mail destination, sending rules and domain policy in one report. If you have a DKIM selector, you can check that key too.

See where mail goes and which sending records your domain publishes.

Free to use
No sign-up

Your domain deserves a proper inbox.

TrekMail is email hosting for your own domain, with guided setup and a free plan to get started.

See how TrekMail works

Start with your email domain

Domain or website address

Paste a domain or website link. We’ll use the domain automatically.

Have a DKIM selector? Add it here

DKIM key name (selector)

Copy the key name from your email provider’s domain setup. A full DKIM DNS record name works too.

Where do I find this?

Open the DNS setup instructions from the service that sends your email. Find the DKIM record and copy its name.

For this recordselector1._domainkey.example.comEnter selector1, or paste the full record name above.

Using TrekMail? Open your domain’s setup in the dashboard and look for the DKIM record. You can also find the name after s= in a sent message’s DKIM-Signature header.

Don’t have a domain handy?

Made by TrekMail email hosting. Start with free Nano, or try an eligible paid email plan for 14 days. Explore email hosting

Email hosting by TrekMail

Your email address.
Your domain.
A proper setup.

Give your business an inbox that belongs to you. Create mailboxes on your own domain and manage them together in TrekMail.

We generate the DNS records your domain needs for receiving and sending, including SPF, DKIM and DMARC. Follow the setup guide, or publish through a supported Cloudflare connection, then check the result in your dashboard.

See hosting plans

Free Nano plan available. No card needed to start.

Your next email addresshello@yourbusiness.com

TrekMail domain dashboard showing verified domains, mailboxes and DNS recheck controls — The TrekMail domain dashboard. Example account shown.

Bring your domainKeep your business identity.

Follow the setupGet the records and check them.

You changed email providers. Is the domain ready?

Moving your email to a new provider? An old receiving record can still point to your previous inbox. Check what is published now, then compare it with your new provider’s setup guide.

What should I look for?

The MX record still names your previous provider, or a sending record is missing.

Compare each result with your new provider’s setup guide. Update only the records you understand, then check again after DNS caches have refreshed.

Look first at MX for incoming mail. Then read SPF and DMARC for the sending side. DKIM needs the selector supplied by your provider; we leave it unchecked when you do not have one.

Check domain

Four records. Four different jobs.

Receiving email, authorizing senders, signing messages and protecting your domain each need a different record.

MX: where mail arrives

Think of MX as the delivery address for your domain’s email. It tells other servers which provider should receive incoming messages.

SPF: who may send

Your website, email host and newsletter may all send for you. SPF lists approved sources. Check that the services you use are included in one policy.

DKIM: a signing key

Your provider signs outgoing email. Receivers use a public key on your domain to check that signature. Ask your provider for the selector to look up the right key.

DMARC: your domain’s policy

DMARC tells receivers what you want them to do with messages that fail checks for your domain: monitor them, send them to spam, or reject them.

A little knowledge. A better setup.

How to check your email domain’s DNS records

A new domain, a provider move or a missed message: start with the settings other mail servers can actually see.

Check domain

Start with the domain, not an email address

For an address such as hello@example.com, enter example.com in the email domain checker. You do not need to own the domain to read its public records. The report brings together MX, SPF and DMARC; add your provider’s DKIM selector if you also want to inspect the signing key.

Run a check before editing DNS. Keep your provider’s instructions open so you can compare the receiving destinations and sending policy with the values you were given.

What it looks like · example

example.com                 MX   → receiving mail servers
example.com                 TXT  → SPF sending policy
selector1._domainkey.example.com  → DKIM public key
_dmarc.example.com           TXT  → DMARC policy

Lookup names explained; these are not DNS values to paste into your account.

What the report tells you

MX identifies where incoming email is routed. SPF describes approved sending sources. DKIM publishes the key receivers use to verify signed messages. DMARC publishes the domain’s policy for mail that fails aligned authentication. They solve different parts of email setup, so finding one does not replace the others.

If a record is missing or still points to an old provider

Make changes at the service that hosts your domain’s DNS. Buying a domain, creating a mailbox and publishing DNS records are separate steps. After a change, check again once cached answers have expired. Keep existing inboxes available during a move until you are satisfied that mail is reaching the new service.

TrekMail gives you the records for your domain and a setup screen to check them. Start on free Nano, then choose a paid email plan when you need sending through TrekMail. The checker above is also available if your inbox is hosted elsewhere.

Read the DMARC specification

Understand the result. Take the next step.

Practical guides from TrekMail, with setup instructions and deeper explanations for this tool.

Documentation

Start free. Give your email room to grow.

Choose a free inbox to get started, or a paid plan for sending through TrekMail. One plan covers your account, with no per-seat fees.

Free for now

Nano

$0/month

Your own domain, your first mailboxes, no credit card.

10 domains
10 mailboxes per domain
5 GB shared storage
Receive email and use webmail

Sending through TrekMail is included in paid plans. Nano can use your own SMTP service.

Send and receive with TrekMail.

Try an eligible paid email plan for 14 days.

Starter

For a small business

$4/month

50 domains
100 mailboxes per domain
15 GB shared storage
Sending included

Pro

For a growing team

$10/month

100 domains
300 mailboxes per domain
50 GB shared storage
Sending included

Agency

For client domains

$29/month

1000 domains
1000 mailboxes per domain
200 GB shared storage
Sending included

Compare plans & start a trial

USD prices, billed monthly. Annual options available. Trials require a card and convert to the selected paid plan on the date shown at checkout. Cancel before that date to avoid a charge.

An inbox is just the beginning.

Read your business email in TrekMail webmail, or connect your favorite email app. Explore the other products when you need more from your workspace.

Explore email hosting

TrekMail webmail inbox with mail folders, messages, calendar and contacts — TrekMail webmail. Example inbox shown.

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AI agent emailGive your workflows an inbox they can work with.Explore AI agent email

White LabelOffer a branded email experience to your customers.Explore White Label

Good questions. Clear answers.

Before you change a record

Find the details you need, then return to the tool when you’re ready.

Check domain

Does a good report guarantee inbox delivery?

No. Content, recipient engagement, sending reputation and receiver policies also affect delivery. This report checks public DNS records, not reputation or inbox placement.

Why is DKIM not checked without a selector?

A domain can use many selectors. There is no complete public list. Find s= in a DKIM-Signature header, and use the domain in d=, or ask the service that sends your mail.

Can I check a subdomain?

Yes. Enter the exact sending or receiving domain. This version checks DMARC at that exact _dmarc name; it does not discover inherited parent-domain policies.

How fresh are the results?

We query public DNS through Cloudflare. Positive answers are cached up to five minutes, constrained by the returned TTL. Missing answers may be cached for 30 seconds. Your DNS provider’s propagation time can be longer.

Is this an email address checker?

This tool checks a domain’s public email DNS records. It does not verify that an individual address exists. Use TrekMail Email Verifier when you need to check an email address.

How do I fix my email domain’s DNS records?

Open your DNS host’s control panel and compare each result with the instructions from your email provider. The tool reads public records and cannot edit them for you. TrekMail provides domain-specific setup instructions in its dashboard.

Put your name on your email.

Create your TrekMail account, bring your domain and follow the setup. Start with free Nano, or try an eligible paid email plan for 14 days.

Compare hosting plans

Nano needs no card. Paid trials require a card.

Free email domain checker.

Start with your email domain

Results

Your email address.
Your domain.
A proper setup.

You changed email providers. Is the domain ready?