Systeme.io Domain Setup: Connect and Authenticate Your Domain

Last checked 29 Oct 2026 · Sources: Systeme.io help centre articles on authenticating your domain for email sending, creating a DMARC record, confirming your sender address, connecting your domain and free DNS setup, plus systeme.io/pricing.

This guide summarises Systeme.io’s own help articles. It is not a hands-on walkthrough, and menu names can change; follow the values shown in your own account.

Two different domain setups

Searches for “authenticate domain” often mix up two separate jobs in Systeme.io:

Job	Where in Systeme.io	Records you add at your DNS host	Why
Email authentication	Settings > Emails > Domains	3 CNAME + 1 DMARC TXT	Required to send emails from Systeme.io with your own address
Custom domain for pages	Settings > Custom Domain	2 CNAME (www + validation)	Shows your funnels and website on your domain
Sender address	Settings > Emails > Verified email addresses	None (confirmation email)	Confirms the From address you send with

You can do one without the other, but most people who sell with Systeme.io need all three.

Authenticate your domain for email

Per Systeme.io’s help article (last updated 25 Aug 2026):

1. Hover over your profile picture, open Settings, then Emails.
2. In the Domains section, click the link to authenticate your domain.
3. Enter your domain without “www” (for example yourbrand.com) and click Save.
4. Systeme.io generates three CNAME records and a DMARC record in a table.
5. At your DNS host (GoDaddy, Namecheap, Cloudflare and so on), add each CNAME record.
6. Add the DMARC record as a TXT record.
7. Check the records with a DNS lookup tool, then contact Systeme.io support as the article asks.
8. Confirm the sender address you want to use (see below).

What the records look like

Systeme.io’s example values (yours will differ, so copy them from your account):

Type	Name (host)	Value
CNAME	si942517 (a unique ID)	inbound.systeme.io.
CNAME	systemeio1._domainkey	key1.systeme.io.
CNAME	systemeio2._domainkey	key2.systeme.io.
TXT	_dmarc	v=DMARC1; p=none; rua=mailto:you@yourbrand.com

Two details from the help article catch many people out:

• Host field: enter only the part before your domain. If Systeme.io shows si942517.yourbrand.com, type si942517.
• Trailing dot: Systeme.io’s example adds a period at the end of CNAME values (inbound.systeme.io.). Systeme.io notes that some hosts, such as Hover, don’t accept the dot, so leave it off there.

Systeme.io’s help centre says SPF and DKIM are set up automatically when you authenticate the domain this way. Its DMARC article warns that a domain can have only one DMARC record: if you already have one from another email tool, edit it instead of adding a second, and separate several report addresses in rua with commas. Systeme.io points to MXToolbox’s DMARC lookup for checking it.

Rules Systeme.io lists

• A domain can be authenticated in only one Systeme.io account or sub-account.
• The domain should have an active website. Systeme.io warns that a domain leading to a 404 page may get emails blocked.
• Personal email domains (Gmail, Yahoo, ProtonMail) can’t be authenticated.

Confirm your sender address

After the domain is authenticated, Systeme.io asks you to confirm the address you send from:

1. Settings > Emails > Verified email addresses.
2. Click the link to confirm an address, enter it (for example hello@yourbrand.com) and save.
3. Open the confirmation email in that inbox and click Confirm.

Connect a custom domain for your pages

This is separate from email authentication. Per Systeme.io’s domain-connection article:

1. Settings > Custom Domain > Add domain.
2. Enter the domain with www (for example www.yourbrand.com) and save.
3. Systeme.io shows two CNAME records: one with host www, and one long validation record starting with an underscore.
4. Add both at your DNS host.
5. Redirect the bare domain (yourbrand.com) to www.yourbrand.com. On Hostinger, Systeme.io describes an ALIAS record at the root instead.

Systeme.io notes that a domain can be used for only one website. If you want to keep an existing site on the root domain, connecting a subdomain (for example pages.yourbrand.com) is the usual alternative; check Systeme.io’s help centre for its subdomain steps.

Common problems

Symptom	Likely cause (per Systeme.io’s help centre)
CNAME shows red in a DNS checker	Typo, full domain pasted into the host field, or record not saved
Record rejected or not resolving	Host doesn’t accept the trailing dot on values (Hover is Systeme.io’s example)
DMARC not working	Two DMARC records on the same domain
Domain can’t be added	It’s already authenticated in another Systeme.io account or sub-account
Changes not visible yet	DNS propagation can take 24 to 48 hours

Free DNS setup from Systeme.io support

Systeme.io’s help centre describes a free DNS setup on every plan: support connects and authenticates the domain for you, usually within a few hours. You must already own the domain, and the request asks for your registrar login details. Systeme.io recommends changing your registrar password once it notifies you the work is done. If your registrar uses two-factor authentication, support coordinates the code by email.

What it costs

Domain setup has no separate Systeme.io fee. The pricing page lists 1 custom domain on the free plan (2,000 contacts, 3 sales funnels, 1 course), and paid plans at USD 17 (Startup), USD 47 (Webinar) and USD 97 (Unlimited) a month (checked 29 Oct 2026). You buy the domain itself from a registrar.

What this page doesn’t cover

It doesn’t rate Systeme.io’s deliverability or cover every DNS host’s screens. Your DNS host’s own help pages show where to add CNAME and TXT records.

Related

Systeme.io free plan · Systeme.io tutorial · Systeme.io pricing · Systeme.io pricing explained · Systeme.io vs MailerLite

Start Systeme.io free (opens in new tab)