Sender addresses and domains

Your own domain

Sending from an address at your own domain puts your domain in the From address and builds its own reputation with inboxes. On the Domains page, under Add your domain, type the domain and the address's name before the @.

The page then lists the DNS records to add where your domain is managed (your registrar or DNS provider):

1. Signature (DKIM): proves the emails come from you.
2. Return path: bounces come back to a subdomain of yours, so SPF passes for your domain.
3. DMARC: tells inboxes what to do with emails that fail the checks. Gmail and Yahoo require one from bulk senders. Start with p=none, then move to p=quarantine once your reports look clean.

Copy each host and value with its button. If your DNS provider asks for the full name instead of the host, the page shows it. DNS changes can take up to a few hours: click Check now to look again, and each record shows when it's found. Once they're all found, the records fold under DNS records, so sending from the domain comes first: click it to see them again.

If your DNS is on Cloudflare, set each record to DNS only, with the grey cloud. Cloudflare turns its proxy on for a new CNAME record, with the orange cloud, and the proxy hides where the record points: inboxes can't check your emails, and they land in spam. The Domains page says when a record is behind a proxy.

When a record changes

Your email provider checks your records to verify the domain, and may not notice when one changes later. So DiazMail also looks at them itself: when you click Check now, every day once the domain is verified, and before a test email or a send when it hasn't looked in the last hour.

A record that's gone, that doesn't match anymore or that's behind a proxy stops the domain from sending, since its emails would fail the checks and land in spam. The Domains page shows which record and how to fix it, a test email from it says the same, a campaign sending from it pauses, and you get an email. Fix the record, click Check now, and resume the campaign from its page.

Switching to your domain

Once the domain is verified, its card on the Domains page lets you send the open newsletter from an address at it. Your next emails go out from that address.

You can also switch from the newsletter's sender settings: pick the domain in the From email field and save. Once a domain is verified, the Domains page shows each newsletter that still sends from the shared address, with an Edit sender button: like the note on the overview, it opens those settings with the domain already picked. Each domain's card lists the newsletters that send from it, with a link to their sender settings.

Once a domain is verified, the Domains page also links to Google Postmaster Tools, where you can see how Gmail rates your domain.

Removing a domain

Removing a domain stops newsletters on it from sending until they move to another address. It's refused while a campaign from it is sending, paused or scheduled. Adding the domain again later needs new DNS records.

Bounces, complaints and how they affect your sending are covered in Bounces, complaints and pauses.