Connect ClickSend to Power Automate
In Power Automate, go to Data > Connections > New connection
Search for ClickSend SMS
Enter your ClickSend credentials:
Username: your ClickSend username
API Key: found here
Click Create – you’re all set!
Send SMS with a Custom Sender ID (Alpha Tag)
Want to send SMS from your business name instead of a number?
Register your Alpha Tag in your ClickSend dashboard
Once approved, go back to Power Automate and:
Use the Send SMS action
Expand the advanced fields (look for the small icon on the message body field)
Add this to your JSON body:
json
,"from": "MyCompany"
Use only letters/numbers (max 11 characters, no spaces)
Want support to override the From field for you? [Chat with us here] Or leave a vote on this feature request
Send Letters & Postcards Automatically
To send printed mail through Power Automate:
Add the Send Letter or Send Postcard action
In the PDF File URL field, paste the public file link (Dropbox, Google Drive, etc.)
Save the flow – and that’s it!
📬 Letters and postcards will be sent through our print network. Track them via Post History
📸 Send MMS from Dropbox
Use Dropbox’s When file is created trigger
Add Convert Media File Format action (choose “MMS”)
Use Send MMS action via ClickSend
Input media URL and phone number fields dynamically
📂 All sent MMS will show in your MMS History
🤖 Trigger Flows from Inbound SMS Keywords
Want to reply or take action based on incoming SMS?
Use SMS Inbound Automation as your trigger
Add a Condition step:
Value: Body
Condition: contains
Keyword: e.g., join
In the “Yes” path:
Add Create New Contact (use From as phone number)
Add Send SMS (use Phone Number dynamically)
📱 This setup will create a contact and send an auto-reply when someone texts a keyword.
🛠️ Common Issues & Fixes
Problem
What to Check
🔐 Can’t connect ClickSend
Re-check username/API key, reconnect
❌ SMS not sending
Check credit balance, valid number & From field
📭 Letter not received
Is the PDF URL public and formatted correctly?
💤 Flow not triggering
Make sure your trigger condition is actually met
⚠️ Sender ID fails
Must be registered, 11 characters max, no spaces
🙋♀️ FAQs
Where can I view what I’ve sent?
→ SMS History, MMS History, or Post History
Can I cancel a letter/postcard?
→ Only within 1 hour of sending. Cancel here
What formats are accepted for letters?
→ PDF only (public links from Google Drive, Dropbox)
Alpha Tag not working?
→ Must be approved, under 11 characters, no spaces
📩 Need more help? Start a live chat with our team