Integrations / Marketing, SMS and reviews

Use AssistCall with Constant Contact

AssistCall answers your business calls 24/7 and can send each call, message and booking to Constant Contact through Webhook, Zapier, Make, n8n.

Constant Contact: Email and SMS marketing platform built for small businesses and nonprofits, with lists, campaigns, events and automations.

Connects

Example call

A caller asks about your next workshop and wants the newsletter. AssistCall records their email, a Zap adds them to your 'Phone sign-ups' list, and the new contact shows up in Constant Contact on that list.

• When a caller asks to get your newsletter, AssistCall's call.completed webhook starts a Zap that runs Constant Contact's Find or Create Contact and Add Contact to List.
• Send lead.captured events to a Make scenario that creates the contact in Constant Contact with name, email and phone and puts it in a 'Phone leads' list.
• Route appointment.booked events through n8n's HTTP Request node (OAuth2 credential) to add customers who booked and agreed to your emails to a 'Booked' list, so you can leave them out of 'book now' promotions.

How it connects

• Webhook: Signed JSON for every call, message and booking, sent to any HTTPS URL you choose.
• Zapier: Send AssistCall events to a Zap (Webhooks by Zapier, Catch Hook), then use the app's Zapier actions. Needs a paid Zapier plan.
• Make: Start a Make scenario with a custom webhook and use the app's Make modules.
• n8n: Start an n8n workflow with a webhook node, then call the app with its node or an HTTP request.
• Call forwarding: Forward your business line to AssistCall when busy, after hours or always. Works with any carrier.

About Constant Contact's API

• Self-serve API: you can create a key in your account
• Style: REST (V3 API)
• Authentication: OAuth 2.0 (Authorization Code, PKCE, Device flows)
• On Zapier: yes. On Make: yes.

You create a private application in the V3 developer portal. Until Constant Contact approves it for wider use, only the account that created it can authorize it. Access tokens expire after 24 hours and must be refreshed, which AssistCall's live-call API step can't do, so connect through Zapier, Make or n8n (n8n's OAuth2 credential handles refresh). V3 webhooks are only available to technology partners. Customer count is a third-party estimate.

Not included: no one-click Constant Contact app, no listing in Constant Contact's marketplace, no two-way sync, and no partnership with Constant Contact.

Researched by the AssistCall team and checked against Constant Contact's public pages on October 24, 2026. Constant Contact is a trademark of Constant Contact. AssistCall is an independent product of Starling Global LLC and is not affiliated with, endorsed by, sponsored by or approved by Constant Contact.

More Marketing, SMS and reviews integrations

• Google Business Profile: Google's free business listing that shows your hours, phone number, reviews and booking options on Google Search and Maps.
• Klaviyo: Email, SMS and customer-data platform used mostly by online stores to send automated flows and campaigns based on shopper data.
• Mailchimp: Email and SMS marketing platform for small businesses, with audiences, campaigns, automations and signup forms.
• Yelp: Local business directory and review site where customers find businesses, read reviews, call, and send Request-a-Quote leads.
• ActiveCampaign: Email marketing, marketing automation and sales CRM for small and mid-sized businesses.
• Birdeye: Reputation and customer-experience platform for local and multi-location businesses, covering review requests, listings, messaging, surveys and appointments.

All product and company names in this directory are trademarks or registered trademarks of their respective owners, used only to identify systems AssistCall can send call information to or receive information from. Their use does not imply any affiliation with or endorsement by their owners. AssistCall connects using signed webhooks, the business's own API keys, automation platforms (Zapier, Make, n8n) the business sets up in its own account, and call forwarding. AssistCall does not provide one-click connectors, marketplace apps, certifications or two-way record or calendar sync, and does not sign HIPAA business associate agreements. Vendor features, plans and API access can change; information last checked October 24, 2026.