Our ActiveCampaign integration allows you to automate SMS, MMS, letters, and postcards — making your campaigns more impactful and timely.
Here are some common ways it's used:
Appointment Reminders: Send an SMS the day before a scheduled event.
Abandoned Deals: Send a follow-up SMS when a deal is stalled.
Welcome Mail: Send a postcard to new subscribers.
Opt-Out Handling: Use inbound triggers to manage opt-out keywords.
Connect ClickSend to ActiveCampaign
Before you start, you'll need active accounts with ClickSend and ActiveCampaign.
You only need to connect once — the connection will be saved and used across all of your automations.
You'll need your ClickSend API Key. Find this in the ClickSend Dashboard under Developers > API Credentials or via the key icon in the top-right.
Log in to your ActiveCampaign account.
From the left-hand menu, go to Apps.
Search for ClickSend and select the integration.
When prompted, enter your ClickSend API key.
Click Connect.
Sending SMS with ActiveCampaign
Go to Automations in ActiveCampaign.
Open an existing automation, or create a new one.
Add a new action step and select CX App > ClickSend SMS.
Configure the SMS action:
Select your Sender ID.
Write your message and personalise it with merge tags such as
%FIRSTNAME%.Shorten any URL's you've included in your message text to save character space.
Choose whether you'd like to log the message in the contact's activity stream.
Save your changes.
Visit SMS > Sent in the ClickSend Dashboard to view your sent messages.
Sending Post with ActiveCampaign
In addition to SMS, you can also send letters and postcards with ActiveCampaign.
Each of your contacts must have a valid mailing address in ActiveCampaign.
Go to Automations in ActiveCampaign.
Open an existing automation, or create a new one.
Add a new action step and select CX App > ClickSend Letter or ClickSend Postcard.
Upload the PDF that you'd like to send.
Set your print and delivery preferences (e.g. colour, duplex, envelope type).
Save your changes.
Visit Post > Sent in the ClickSend Dashboard to view your sent messages.
Sending MMS with ActiveCampaign (New Feature)
ClickSend’s Send an MMS action can be performed in ActiveCampaign CX Apps. With this feature, you can:
Send MMS by adding an Image URL field.
Automate MMS messages using shared or dedicated Sender IDs.
Send MMS to supported countries: United States, Canada, Australia, and Puerto Rico.
How to Set Up MMS Sending
Go to Automations in ActiveCampaign.
Add a new action step and select CX App > ClickSend - Send an MMS.
Connect your ClickSend account with your Username + API Key (if not already connected).
Configure your MMS action:
Sender ID: Choose a Shared or Dedicated number. If left blank, a shared number will be used.
Opt-out list (optional): Select an opt-out list to automatically capture unsubscribes.
Image URL: Use the ClickSend MMS Upload Portal to upload your image and generate a URL (supports .jpg, .jpeg, .png, .gif).
Message Content: Add a subject and message (up to 1,500 characters).
Click Finish to save your MMS action.
Testing Your MMS Automation
Go to Contacts in ActiveCampaign.
Add the trigger tag (e.g., Join) to a test contact.
Check the Activity section of the contact page to verify the MMS was sent.
Tips and best practices
Always test your automation with your own number before sending to contacts.
Make sure contacts have opted-in to receive SMS messages.
Monitor your SMS usage to avoid unexpected charges.
Need help?
If you run into any issues, contact ClickSend support. You can also refer to the ClickSend Developer Docs for more detailed API information.