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Two things carry your brand rather than Alguna’s: the domain your hosted pages are served from, and the address your customer email is sent from. Both replace an Alguna default with something you own, and both need us to provision and verify the identity before traffic moves. Use this page once you have a live hosted checkout or customer portal and want links such as https://buy.waystar.com/... and email from billing@waystar.com instead of the defaults.

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Default address

By default, hosted pages are served on a subdomain derived from the brand slug you set under Settings → Organization → Customizations → Branding (see Branding):
Sandbox uses alguna.site in place of alguna.app. With a custom domain the same page is served at:
URLs returned by the API — the url on a checkout session or a customer portal session — use the custom domain once it is active, so nothing changes in your integration.

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Add a CNAME record

Point the subdomain at Alguna with a CNAME record in your DNS provider: A 30-minute TTL keeps later changes quick to propagate.
Make sure there are no conflicting records — for example an A record — on the same subdomain.
Example. For buy.waystar.com, add a CNAME for host buy on the waystar.com zone:

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Activate the domain

Once the record resolves, register the domain with Alguna under Settings → Organization → Customizations → Custom Domain, or share it with us at support@alguna.io. Alguna provisions the domain and issues its TLS certificate; the pages are served over HTTPS as soon as that completes.

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Sending email from your own address

Customer email is sent from Alguna addresses by default — invoices@alguna.io, subscriptions@alguna.io and the rest, listed in Emails. You can have it sent from an address you own instead, such as billing@waystar.com. Unlike the domain above, this is not self-serve: custom sender addresses are configured per organization by our team. Email support@alguna.io or your shared Slack channel with the address you want. Two things to know before you ask:
  • Internal emails do not change. Organization invitations and approval notifications keep their Alguna addresses regardless, so your team can always tell platform mail from customer mail.
  • Sending as your domain needs that domain authorized. Mail sent from an address at your domain has to be authenticated as coming from you, which means publishing DNS records that authorize Alguna as a sender. We give you the exact records as part of setting it up — do not change your SPF, DKIM or DMARC records in advance, and do not add records copied from another vendor’s guide. A DMARC policy that rejects unauthenticated mail will silently drop your own invoices if the sending identity is not set up first.
Until a custom sender is configured, no DNS changes are needed for email at all: the default addresses are on Alguna’s own domain and are already authenticated. The CNAME above covers hosted pages only — it does not affect email.
  • Emails — what Alguna sends, who receives it, and the default sender addresses
  • Branding — logo, colors and the brand slug the default address is built from
  • Hosted checkout and Customer portal — the pages served on the domain