Serve images from your own domain

By default, logos and banners in your signatures are served from images.signature.cat. You can serve them from a subdomain of your own domain instead - for example images.yourcompany.com. Mail clients fetch images from the sender's own domain more readily, so deliverability improves, and the URLs carry your brand.

Setup breaks nothing: until the domain is active, images keep loading from images.signature.cat, and after activation the switch happens automatically for newly rendered signatures. Templates stay unchanged.

Requirements

• An Admin access level in SignatureCat.
• Access to your domain's DNS settings.
• A subdomain (like images.yourcompany.com). Apex domains (yourcompany.com) are not supported by design.

Set it up

1. Open the image library from any template editor on Signatures (Logo or Banner button) and choose Use your own domain in the serving bar.
2. Enter a subdomain - for example images.yourcompany.com - and click Generate DNS records.
3. Add two DNS records at your DNS provider, exactly as shown:
   • a CNAME record pointing the subdomain to cdn.signature.cat (points the subdomain to us),
   • a TXT record proving domain ownership.
4. Wait for verification. SignatureCat checks the records automatically every few minutes; you can also click Check now. Activation usually takes a few minutes, sometimes up to an hour while DNS refreshes. The TLS certificate is issued for you.

The wizard shows one of three statuses: Waiting for DNS records, Domain active or Verification failed.

Once active: "New emails fetch images from your domain. Templates stay unchanged - the switch happens automatically."

Removing the domain

Removing the domain in the wizard switches image serving back to images.signature.cat automatically for new emails. Nothing breaks.