Real People, 24/7

Mailchimp API Key

Have you encountered an error when connecting to Mailchimp in Step 2 of your Set-Up, which states that the API Key might be invalid for Mailchimp? 

Here are a few of the factors that might have caused the error:

  • You might have inputted the wrong Mailchimp API Key in Step 2 of the Set Up.
  • When updating the Mailchimp API key in Step 2, the browser's password programs are enabled, as this causes cache issues.
  • The Mailchimp API key has expired

Mailchimp API Key Solution 

  • First, log in to your Mailchimp account, then head straight to the API Keys. Create or generate a new one to be used for SyncApps. 
  • Copy the new API Key, then head back to your Set Up, specifically to Step 2. 


Note -- Remember to disable the browser's password programs or any autofill programs when editing. You can also edit this in incognito/private mode.
  • Paste the newly generated API Key in the Mailchimp API key text box in Step 2 of the Set Up. Hit Save, then resync.

Need Some Help with a Human Touch?

Check out the options below on how you can contact our support team and find the answers you need to help you with your SyncApps integrations.

Help Center & Email is 24/7 to | Live Chat & Phone have to be scheduled in advance.


Check out these Help Desk articles for answers to frequently asked questions.

Get Started | Login Issues | Pricing

Be sure to see one customer's story on how SyncApps helped them save 13 days per year of manually importing/exporting data!

Have more questions? Submit a request