Fix Mailchimp Connection Issues with Squarespace
TL;DR:
- Keep forms under 30 fields when connecting to Mailchimp
- Use fresh email addresses for testing to avoid confirmation issues
- Disconnect and reconnect your Mailchimp integration to refresh settings
- Check that all form blocks linked to the same audience have identical fields
- Disable double opt-in if confirmation emails aren't working
Connecting Mailchimp to Squarespace syncs your subscriber lists, orders, products, and customer details. When it works, it's brilliant. When it doesn't, here's how to fix it.
Setting Up Your Mailchimp Connection
Before you connect anything, sort out these basics:
Keep your forms simple. Mailchimp can only handle 30 fields maximum. If your form has more than that, it'll break. Go through and remove any fields you don't actually need.
Match your form fields. If you're using existing Mailchimp audiences, every form block that connects to those audiences needs identical fields. One form with a phone number field and another without it? That's going to cause problems.
Test with fresh emails. Don't use an email that's already subscribed to your list. It'll skip the opt-in process and you won't see if things are working properly.
Troubleshooting Form Submission Errors
When Mailchimp sends you an error email about a "potential fake or mistyped email address," it's trying to protect your data quality. Here's how to fix it:
- Find the form mentioned in the error email
- Go to the form's storage settings and check the Mailchimp sync options
- Disconnect and reconnect your Mailchimp account
This refreshes the connection and usually sorts out any glitches.
After making major changes to your Mailchimp audience or form structure, update your connection settings. It's one of those maintenance tasks that saves you headaches later.
Resolving Connection and Sync Issues
If subscribers aren't showing up in your Mailchimp list, or the numbers don't match between your form submissions and actual subscriber data:
Check your field requirements. Only the email address should be required in Mailchimp. Everything else should be optional, even if it's required on your Squarespace form.
Try a new audience. Sometimes starting fresh clears persistent issues. Create a new audience in Mailchimp and connect your forms to that instead.
Reset the connection completely. Go to your Mailchimp account, remove Squarespace from your integrations, then add it back. This often fixes stubborn sync problems.
Send a test submission after reconnecting to make sure everything's working.
Handling Email Delivery Problems
Confirmation Emails
If confirmation emails aren't going out, check your double opt-in settings. Sometimes this feature blocks people from being added to your list properly.
Spam Issues
Emails can end up in spam folders because of strict email provider policies. If you're using a basic email address, consider setting up a professional one through Google Workspace or similar. It helps with deliverability.
FAQs
How can I fix the "Form Submission Error" when using Mailchimp with Squarespace?
Disconnect and reconnect your Mailchimp account from the specific form block in Squarespace. Make sure all your form blocks have consistent fields and stay under 30 fields total.
What should I do if subscribers aren't receiving confirmation emails from Mailchimp?
Check if double opt-in is enabled in your Mailchimp settings. If it's causing problems, you can disable it. You can also check Mailchimp's help center for deliverability guidance.
How can I prevent emails from being marked as spam when using Mailchimp through Squarespace?
Use a professional email address from a service like Google Workspace. Review Mailchimp's deliverability guidelines and make sure your sending domain is properly configured.
Jargon Buster
Double Opt-In: A security feature that requires people to verify their email address before being added to your mailing list. They get an email asking them to confirm they want to subscribe.
DMARC Policies: Email security protocols that help prevent spam and phishing by verifying that emails actually come from who they claim to come from.
Sync: The process of keeping information consistent between different platforms. When Squarespace and Mailchimp are synced, subscriber data matches across both platforms.
Wrap-up
Most Mailchimp and Squarespace connection issues come down to field mismatches, overcomplicated forms, or stale connections. Keep your forms simple, check your settings regularly, and don't be afraid to disconnect and reconnect when things go wrong.
If you've tried everything here and still have issues, Mailchimp's support team can dig deeper into your specific setup.
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