What you'll need

An Appalix account on Pro plan or above
A Constant Contact account
A Constant Contact API Key, OAuth Access Token, and List ID

Note: Constant Contact uses OAuth 2.0. Unlike some other platforms, you need to register an application in their developer portal to obtain an API key, even for personal use. This is a one-time step.

Step 1 — Get your API Key from the developer portal

Go to developer.constantcontact.com and sign in with your Constant Contact credentials.
Click My Applications → New Application.
Give it a name (e.g. "Appalix Sync"), add a redirect URI of https://appalix.ai, and save.
Copy the API Key shown in your application settings.

Step 2 — Generate an OAuth Access Token

In the Constant Contact developer portal, go to your application and look for the Generate Access Token or Token Tool option.
Select the following scopes:
- contact_data — read and write contacts
- list_data — read contact lists
Authorise the application with your Constant Contact account credentials.
Copy the Access Token that is generated.

Token expiry: Constant Contact access tokens can expire. If the integration stops syncing, re-generate your token in the developer portal and update it in Sage → Integrations → Constant Contact.

Step 3 — Find your List ID

Log in to Constant Contact and go to Contacts → Lists.
Click on the list you want to sync contacts into.
The List ID appears in the page URL after /lists/, or in the list settings panel.

Step 4 — Connect in Sage → Integrations

In Appalix, navigate to Sage → Integrations in the left sidebar.
Scroll to the Email Marketing section and find the Constant Contact card.
Click Connect and fill in your API Key, Access Token, and List ID.
Click Save & Connect. The card shows a green Connected badge.

What the integration does

Contact sync — contacts created or updated in Sage are added to your specified Constant Contact list.
Data mapped — name, email, and phone number are synced. Additional fields follow Constant Contact's contact model.

Forms sync: Constant Contact is not currently supported in the Forms → Sources pull sync. To import Constant Contact contacts into Appalix leads, export contacts from Constant Contact or use their webhook integrations.

Frequently asked questions

Why do I need an API key AND an access token?

Constant Contact's V3 API uses OAuth 2.0, which requires both: the API key identifies your registered application, and the access token authenticates your Constant Contact account. Both are needed together for API calls to succeed.

What happens if my access token expires?

Syncing will stop. To fix it, go to the Constant Contact developer portal, generate a new access token, and update it in Sage → Integrations → Constant Contact by clicking Disconnect and then reconnecting with the new token.

Are my credentials stored securely?

Yes. Your API key and access token are stored encrypted in your workspace database and never shown in plain text after saving.

📬

Ready to connect Constant Contact?

Go to Sage → Integrations → Email Marketing and paste your API key, access token, and list ID.

Go to Sage → Integrations →

Connect Constant Contact to Appalix