Hello @MichelleA120 ,
We don't have any integrations we've developed with that system, so I'd advise looking on their site or elsewhere on the internet for a 3rd party-developed integration that can connect the two. Otherwise, you may need to manually export from your TT account and import contacts into your Constant Contact account, as well as link to TT events (if applicable) in your emails using direct URLs.
See also:
Text links
Image links
Button links
Formatting a contact file for import
