Multiple Squarespace Sites, One SeaText Plan: What Actually Happens

The short answer: one SeaText plan covers one site

If you have multiple Squarespace sites but only one SeaText plan, the plan applies to just one of those sites. SeaText links each account to a single primary URL. That means the AI agents, translation, SEO, and conversion tools you activate will only run on the site whose domain is connected to that account.

To use SeaText on your other Squarespace sites, you need to create a separate account for each one. Each account has its own plan and its own primary URL. There is no shared plan that covers multiple domains under one account.

Why SeaText ties one account to one domain

SeaText works by injecting a JavaScript snippet into your site's header. That snippet connects your website to your SeaText account. The AI then reads traffic, rewrites copy, translates pages, and tracks conversions for that specific domain.

Because the account is linked to a single primary URL, the system knows which site's data belongs to which account. This keeps analytics clean, prevents cross-site data mixing, and makes sure the AI agents behave correctly for each site's audience.

If you tried to use one account across two domains, SeaText could not reliably associate traffic with your account. That would break the AI's ability to learn from visitor behavior and optimize correctly.

What counts as a separate site

A separate site means a different primary domain. For example:

• yoursite.com and yoursecondsite.com are two separate sites
• yoursite.com and a development subdomain like dev.yoursite.com are also treated as separate domains
• localhost or other development URLs are restricted for security reasons

Even if two sites share the same brand or business, they still need separate SeaText accounts if they have different domains.

Your options when you have multiple sites

You have three practical paths:

Option 1: Create a separate SeaText account for each site

This is the cleanest approach. Each site gets its own account, its own plan, and its own set of activated AI agents. You manage them separately, and each site's data stays isolated.

This is the recommended path if each site has different goals, audiences, or marketing strategies.

Option 2: Consolidate your sites onto one domain

If your multiple Squarespace sites serve the same purpose, you could merge them into one site with subdirectories or subpages. Then one SeaText account covers everything.

This works well if the sites are related, like a main site plus a blog or a regional landing page. But it is not a good fit if the sites are truly separate businesses or brands.

Option 3: Keep one site on SeaText and manage the others manually

If budget is tight, you can activate SeaText on your highest-priority site and handle the others with manual SEO and conversion work. This is a temporary workaround, not a long-term strategy.

How to set up SeaText on each Squarespace site

The process is the same for every site:

1. Create a SeaText account for that specific domain.
2. Log in to your Squarespace dashboard for that site.
3. Click the three dots icon and select Settings.
4. Navigate to Developer Tools at the bottom of the settings page.
5. Click Code Injection.
6. Paste the JavaScript code from your SeaText account into the HEADER area.
7. Click Save and publish your site.
8. Visit or refresh your site several times and stay for at least 40 seconds to activate the AI.
9. Wait at least five minutes until your website name appears next to the SeaText logo at the top of your account page.

If you do not see your site name after 10 minutes, contact SeaText support. That could indicate an installation issue.

Cost drivers to consider

When you have multiple sites, the main cost driver is the number of SeaText accounts you need. Each account requires its own plan. There is no bulk discount mentioned in the source pack, so you should check the pricing page for current rates.

Other cost drivers include:

• Which AI agents you activate on each site. More agents may mean higher plan tiers.
• Traffic volume per site. Higher-traffic sites may need more capacity.
• Translation needs. If you activate the 125-language translation agent on multiple sites, that multiplies the workload.
• Whether you need enterprise features or custom support.

Before you commit, list every domain you want to cover. Then decide which sites truly need SeaText's full capabilities. Not every site may need every agent.

Key facts at a glance

Practical scenarios

Scenario A: A main site plus a separate blog

You have yourstore.com and yourstoreblog.com. They are separate domains. You need two SeaText accounts. If the blog is low priority, you might skip SeaText there and only optimize the main store.

Scenario B: A production site and a staging site

You have yourstore.com and staging.yourstore.com. These are different domains. SeaText restricts development URLs, so the staging site may not work reliably. Use a real domain for testing, or test on the production site with careful monitoring.

Scenario C: Two separate businesses under one owner

You run bakery.com and catering.com. These are separate brands with separate audiences. Each needs its own SeaText account and its own plan. The AI agents on each site should be configured for that site's specific goals.

Limitations and when this advice does not apply

This guidance applies to standard SeaText accounts. If you have an enterprise agreement or a custom plan, your terms may differ. Check with SeaText sales for multi-site arrangements.

Also, if you are using a subdomain that is part of the same primary domain, the rules may be different. The source pack says each account is linked to a single primary URL, so subdomains are likely treated as separate. But confirm with support if you have a specific setup in mind.

Finally, this article does not cover Squarespace's own multi-site pricing. Squarespace allows one account to support unlimited sites, each with its own plan. That is separate from SeaText's per-account model.

Frequently asked questions

Can I use one SeaText plan on two Squarespace sites?

No. Each SeaText account is linked to one primary URL. You need a separate account for each site.

Do I have to pay full price for each site?

Each account requires its own plan. Check the SeaText pricing page for current rates and any volume options.

What if I only want SeaText on one of my sites?

That is fine. Just create an account for that site and leave the others unconnected. You can add them later if you choose.

Can I move a SeaText account from one site to another?

The source pack does not describe an account transfer process. You would likely need to create a new account for the new domain and deactivate the old one. Contact support for guidance.

What happens if I paste the same code on two sites?

The code is tied to your account's primary URL. Pasting it on a second site would not work correctly because the account is not linked to that domain. You need a separate account and a separate code snippet.

How long does it take for a new site to connect?

After you paste the code and publish, visit the site several times and stay for at least 40 seconds. Your site name should appear next to the SeaText logo within about five minutes. If not, contact support after 10 minutes.

Are there any discounts for multiple sites?

The source pack does not mention multi-site discounts. Check the pricing page or contact sales to ask about volume pricing.