ActiveCampaign and Twilio integrate through ActiveCampaign Automations, Webhooks, and the Twilio Messages API to send SMS at specific steps in email nurture sequences, CRM pipeline stages, and lead scoring thresholds without requiring a separate SMS platform. This integration is used by B2B and B2C marketers running ActiveCampaign as their marketing automation and CRM platform who want to add SMS touchpoints to sequences that already contain email, task, and deal stages. The connection uses ActiveCampaign's webhook action inside automations to fire an event to your middleware at the desired automation step, which triggers the Twilio SMS using the contact's stored phone number.
What You Need Before You Start
Generate an ActiveCampaign API key from your account settings under Developer, copying both the API URL in the format https://{account}.api-us1.com and the API Key, as both are required for all API calls. Ensure your ActiveCampaign contacts have a Phone field populated by navigating to Contacts, then Manage Fields, and confirming that the standard Phone field is mapped to your contact import data or web form submissions, as Twilio SMS dispatch requires a phone number on each contact. From Twilio, collect your Account SID, Auth Token, and an SMS-capable phone number registered under an A2P 10DLC campaign for US contacts. Plan which automation steps should trigger SMS by reviewing your existing ActiveCampaign automation maps and identifying the moments where a text message adds value over email, such as immediately after a demo request, after a trial signup, or at a deal stage change in the CRM pipeline.
Step-by-Step Integration Guide
Inside an ActiveCampaign automation, add a Webhook action at the step where you want Twilio SMS to fire by dragging the Webhook action into the automation map, setting the URL to your middleware endpoint, the method to POST, and the body to a JSON payload including the merge tags %FIRSTNAME%, %PHONE%, %EMAIL%, and any custom field values relevant to the message content. In your middleware webhook handler, receive the POST, extract the contact phone from the PHONE field in the body, normalize it to E.164 by stripping non-digits and prepending the country code, then dispatch the Twilio SMS by calling POST https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages.json with Basic authentication and a Body personalized with the first name and any relevant automation context. To trigger ActiveCampaign automations from inbound Twilio SMS, configure your Twilio inbound number's webhook to a middleware handler that parses the incoming SMS From and Body, searches ActiveCampaign for a contact with that phone using GET https://{account}.api-us1.com/api/3/contacts?phone={phone} with the Api-Token header, and adds the matching contact to a specific ActiveCampaign automation via POST https://{account}.api-us1.com/api/3/contactAutomations with the contact ID and automation ID in the body. Write the SMS interaction back to the ActiveCampaign contact timeline by calling POST https://{account}.api-us1.com/api/3/activityLogs with the contact ID and a note containing the SMS body text, giving sales reps full context on SMS conversations within the CRM.
Common Issues and How to Fix Them
ActiveCampaign Webhook actions in automations do not retry on failure and do not alert you when the webhook delivery fails, meaning if your middleware is down during an automation run the SMS step is silently skipped for contacts in that automation at that time. Enable logging in your middleware that records every inbound webhook payload to a persistent store so you can identify and replay any missed SMS dispatches after a downtime event. ActiveCampaign stores contact phone numbers in the Phone field formatted as entered by the contact or import source, often without country codes or with formatting characters, causing E.164 normalization failures. Add a contact normalization step to your ActiveCampaign automation before the SMS webhook action using an ActiveCampaign Update Contact action to reformat the phone field, or handle normalization robustly in your middleware by supporting a wide range of input formats with fallback country code assumptions. The ActiveCampaign webhook body merge tags such as %PHONE% render as empty strings when the contact does not have a phone field value, and your middleware may silently fail or dispatch a Twilio SMS to an empty To field. Add an if/else condition in your ActiveCampaign automation before the webhook action using the condition Phone is not empty to route contacts without phones to a different path, preventing the webhook from firing for contacts where SMS cannot be delivered.
How to Get More from This Integration
Build a CRM pipeline SMS trigger by connecting ActiveCampaign deals to Twilio SMS using the ActiveCampaign deal stage webhook event, firing a Twilio SMS to the primary contact on the deal when it moves to a specific pipeline stage such as Proposal Sent, enabling instant follow-up on high-priority sales moments. Create a lead scoring SMS threshold alert by adding a Goal step to your ActiveCampaign automation that checks whether the contact's lead score exceeds a target value, then fires a Twilio SMS to the assigned sales rep's phone rather than the contact, alerting the rep that a hot lead needs immediate follow-up. Add SMS-based form submission confirmation by connecting ActiveCampaign form webhook events to your middleware, extracting the submitter phone from a form phone field, and dispatching a Twilio SMS confirmation within seconds of form submission, complementing the ActiveCampaign confirmation email that may take a few minutes to arrive. Measure SMS impact on pipeline velocity by tagging contacts who received an SMS at the demo request stage in ActiveCampaign and comparing their average deal close time against contacts who did not receive an SMS, using ActiveCampaign's contact segmentation and reporting to quantify the SMS contribution to sales cycle reduction.
Conclusion
ActiveCampaign and Twilio together give your marketing and sales teams an SMS channel fully integrated into the automation sequences and CRM pipeline they already run every day. Contact Telphi Consulting to map and implement Twilio SMS steps across your ActiveCampaign automations.
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