ListBridge Sync for Constant Contact and MemberPress

ListBridge Sync for Constant Contact and MemberPress connects MemberPress membership events to your Constant Contact account so subscribers move between contact lists based on their membership state — without exporting CSVs or running manual syncs.

This is an independent integration. “Constant Contact” is a trademark of Constant Contact, Inc. and “MemberPress” is a trademark of Caseproof, LLC. This plugin is not affiliated with, endorsed by, or sponsored by either company.

Key features

• OAuth2 Authorization Code flow
• Three event slots, each mapped to a Constant Contact list of your choice:
  • New Member Signup — added when a member registers and pays for the first time.
  • Membership Expired — added when a membership expires or a subscription is cancelled.
  • Reactivated / Renewed — added when an expired membership is renewed or a cancelled subscription is reactivated.
• Cron at Midnight (site timezone) catches any expired members the real-time hooks may have missed — for example, if your site was offline when MemberPress fired the event.
• Admin-triggered status changes (Transactions list, Edit Transaction screen, bulk status updates) are detected and synced.
• Automatic access-token refresh before every API call — you never hit a 401.
• Translation-ready with a .pot file in /languages.

Requirements

• WordPress 5.8 or later
• PHP 7.4 or later
• PHP OpenSSL extension (the plugin will refuse to activate without it)
• MemberPress 1.12.14 or later
• A Constant Contact developer account — create one for free at https://developer.constantcontact.com

External services

This plugin relies on the Constant Contact service to synchronise your MemberPress members with your Constant Contact account. No data is transmitted until a site administrator saves valid OAuth2 credentials on the plugin’s settings page and completes the OAuth2 connection flow.

Service used

• Constant Contact (operated by Constant Contact, Inc.)
• OAuth2 authorisation endpoint: https://authz.constantcontact.com/oauth2/default/v1
• API endpoint: https://api.cc.email/v3

What data is sent, and when

• During OAuth2 connect / token refresh — your Constant Contact Client ID and Client Secret are sent to the Constant Contact authorisation endpoint to obtain or refresh an access token. This happens when an administrator clicks “Connect to Constant Contact” and automatically before any API call whose access token has expired.
• When a MemberPress member signs up (mepr-signup) — the member’s email address, first name, and last name are sent to Constant Contact so the contact can be added to the list mapped to the “New Member Signup” slot.
• When a membership expires or a subscription is cancelled (mepr-event, mepr-expire-membership, mepr-subscription-pre-cancel, mepr_txn_store, mepr-transaction-saved, mepr_txn_transition_status) — the member’s email, first name, and last name are sent so the contact can be moved to the list mapped to the “Membership Expired” slot.
• When an expired membership is renewed or reactivated (mepr-transaction-completed, mepr-event) — the member’s email, first name, and last name are sent so the contact can be moved to the list mapped to the “Reactivated / Renewed” slot.
• Nightly cron at 12:05 AM in the site’s timezone — the plugin queries MemberPress for transactions that expired in the last 48 hours and, for any that have not yet been migrated, sends the same fields (email, first name, last name) so Constant Contact stays in sync if a real-time hook was missed (for example, the site was offline).
• When loading the settings page (administrators only) — the plugin requests the list of contact lists in your Constant Contact account so they can be shown in the mapping dropdowns. No member data is sent in this call. The response is cached for 30 minutes.

The plugin does not transmit any data to any other third-party service.

Terms and privacy

By connecting your site to Constant Contact you agree to Constant Contact’s policies:

• Constant Contact Terms of Service: https://www.constantcontact.com/legal/terms
• Constant Contact Privacy Notice: https://www.constantcontact.com/legal/privacy-notice
• Constant Contact Developer Portal terms: https://developer.constantcontact.com