diff --git a/Disable-registration-of-new-users.md b/Disable-registration-of-new-users.md
index 551ac5d..0eca93e 100644
--- a/Disable-registration-of-new-users.md
+++ b/Disable-registration-of-new-users.md
@@ -8,3 +8,10 @@ docker run -d --name bitwarden \
   bitwardenrs/server:latest
 ```
 Note: While users can't register on their own, they can still be invited by already registered users. See [[Disable invitations|disable-invitations]] if you also want to disable that.
+
+You can also disable registration except for email addresses from certain domains. For example:
+
+* `SIGNUPS_DOMAINS_WHITELIST=example.com` (single domain)
+* `SIGNUPS_DOMAINS_WHITELIST=example.com,example.net,example.org` (multiple domains)
+
+You still need to set `SIGNUPS_ALLOWED=false`. Also, see [#728](https://github.com/dani-garcia/bitwarden_rs/pull/728) for caveats.
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