If you send email from your own domain, other people can try to send email as your domain too, and you’d usually never know. Domain Health fixes that. It reads the reports inbox providers already generate about your domain and turns them into a plain-English picture: who’s sending as you, whether they’re legitimate, and whether anything looks off.
The setup is a one-time thing, and it takes about two minutes. Here’s exactly what to do.
What you’ll need
Just two things: access to your domain’s DNS settings (wherever you bought the domain: GoDaddy, Namecheap, Cloudflare, Google Domains, and so on) and a Sendable account. That’s it. You do not need to change anything about how you currently send email.
Good to know: this is the same
DMARCrecord big companies use to protect their domains. Setting it up also quietly improves your own deliverability over time, since inbox providers trust domains that publish one.
Step 1: Grab your reporting address
Open Domain Health in Sendable. In the app, go to Domain Health and choose Add a domain. Type your sending domain (for example yourname.com). We’ll generate a dedicated reporting address that belongs only to you, something like rua@in.sndbl.com.
Step 2: Add one DNS record
Paste the record we give you. Sendable shows you a single TXT record to copy. In your domain’s DNS settings, add a new record with the host set to _dmarc and the value we provide. Save it. If a record already exists, we’ll show you how to safely add our reporting address alongside it.
You’re not handing us your inbox. This record only tells inbox providers where to send the aggregate reports they already produce: counts and senders, never the contents of anyone’s email.
Step 3: Let it run
That’s the setup. Now wait a day. DNS changes take a few hours to spread, and reports arrive on the inbox providers’ schedule (usually daily). Within a day or two you’ll see your first verdict, your trusted senders, and anyone new sending under your name. From then on it’s fully automatic.
What you’ll see once it’s running
Domain Health gives you a clear, scannable view:
- A plain verdict, either “your email is protected” or a heads-up if something needs attention.
- Who’s sending as you, grouped by name, with first-seen dates and how many providers reported each one.
- Fakes caught, impersonators that receivers quarantined or rejected on your behalf.
If a sender you don’t recognize shows up, you’ll know early, long before it can dent the reputation that decides whether your real email lands. When you’re ready, create your account and add your first domain.