SPF Setup for Squarespace Domains

December 11, 2025 • InboxGreenEmail Team

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SPF Setup for Squarespace Domains

Setting up SPF for your Squarespace domain can be a bit tricky, especially if you are not familiar with how email authentication works. If you are a SaaS founder, marketer, or technical person managing email sending, you know how crucial it is for your emails to land in the inbox, not the spam folder. A misconfigured SPF record can lead to deliverability issues, which can hurt your business. In this article, we will walk you through the steps to set up SPF for your Squarespace domain, helping you ensure that your emails reach your audience effectively.

At a glance

  • This article is for SaaS founders, marketers, and technical people managing email sending.
  • You will learn how to set up an SPF record for your Squarespace domain.
  • The key outcome is improved email deliverability and inbox placement.

When this problem shows up in real life

Imagine you send out a marketing email to your subscribers, but instead of landing in their inbox, it goes straight to spam. You check the logs and see that your SPF record is not configured correctly. Here are a couple of scenarios that illustrate this issue:

  • Gmail Headers: You notice in the headers that the SPF check fails. You see something like this:
    • Authentication-Results: mx.google.com; spf=fail (google.com: domain of example.com does not designate 192.0.2.1 as permitted sender) [email protected]
  • Support Tickets: Your customers start reporting that they are not receiving important emails. You check your email service provider and find that your domain's reputation has dropped due to poor deliverability.

Step by step: SPF setup for Squarespace domains

  1. Log in to your Squarespace account. Navigate to the settings for the domain you want to configure.
  2. Access your DNS settings. Go to the "Domains" section and select your domain. Click on "Advanced Settings" to find the DNS settings.
  3. Add an SPF record. You need to create a TXT record. The basic format for an SPF record looks like this:
    4. v=spf1 include:_spf.google.com ~all
  4. Customize the SPF record. If you are using other services to send emails, you will need to include them in your SPF record. For example, if you are using Mailchimp, it would look like this:
    5. v=spf1 include:_spf.google.com include:servers.mcsv.net ~all
  5. Save your changes. After adding the TXT record, make sure to save the changes. It may take some time for the changes to propagate.

Common mistakes

  • Not including all sending services: If you forget to include a service you use, emails sent from that service may fail SPF checks.
  • Using multiple SPF records: You should only have one SPF record per domain. Having multiple records can cause confusion and failures.
  • Incorrect syntax: A small typo can invalidate your SPF record. Always double check for typos or formatting issues.
  • Not updating SPF when changing email services: If you switch email providers, make sure to update your SPF record accordingly.
  • Using the wrong mechanism: Using mechanisms like "all" without understanding their implications can lead to poor deliverability.

Troubleshooting when it still fails

If your SPF record looks correct but you are still facing issues, there are a few things to check:

  • Check the Authentication-Results headers: Look for the SPF results in the headers of the emails you send. This can give you insights into what is going wrong.
  • Use the InboxGreen checker: Run your domain through the InboxGreen checker to identify any issues with your SPF setup.
  • Validate your DNS records: Ensure that your DNS records have propagated correctly. Use tools like dig or nslookup to verify.

Related checks you should run

In addition to setting up SPF, consider checking the following:

  • DKIM and DMARC alignment to further enhance your email authentication.
  • DNS TTL settings to ensure your changes propagate quickly.
  • Your domain's reputation, as poor reputation can affect deliverability.
  • Monitor bounces and spam reports to identify potential issues.

FAQ

What is SPF and why is it important?

SPF stands for Sender Policy Framework. It helps prevent email spoofing by allowing domain owners to specify which mail servers are permitted to send emails on behalf of their domain. This is crucial for maintaining a good sender reputation and ensuring your emails land in the inbox.

How do I know if my SPF record is set up correctly?

You can check your SPF record using the InboxGreen checker. It will analyze your DNS settings and provide feedback on any issues.

Can I have multiple SPF records for my domain?

No, you should only have one SPF record per domain. If you need to include multiple services, combine them into a single record using the appropriate mechanisms.

What happens if my SPF record is incorrect?

If your SPF record is incorrect, your emails may fail SPF checks, leading to poor deliverability. This can result in your emails being marked as spam or rejected altogether.

How often should I update my SPF record?

Update your SPF record whenever you change email service providers or add new services that send emails on your behalf. Regularly review it to ensure it remains accurate.

What to do next

Now that you have a better understanding of how to set up SPF for your Squarespace domain, it’s time to take action. Follow the steps outlined above to configure your SPF record correctly. Don’t forget to run your domain through the InboxGreen checker to ensure everything is set up properly. If you need to create or modify your SPF record, consider using our SPF generator for a hassle-free experience. Good luck, and may your emails always land in the inbox!

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