How to build missed call text back automation?

Questions
1

:bullseye: What is your goal?

to build a instant or semi instant ( delayed by 1 minute maximum ) missed call text back automation using a irish number, by using either twilio or clicksend or both if needed. person calls me, i miss the call, automation detects it, sends message to that person who called.

:thinking: What is the problem & what have you tried?

I am not sure whats the best way to build it. I have experimented with webhooks, twilio and clicksend and different filters. I am confused though as I am using claude to help me build it but I feel like claude is giving me outdated information and cant seem to understand what it wants me to do.

I am also based in Ireland and Twilio and Clicksend have different rules with phone numbers than in the US, so I also need to work around that. Just not sure the best way to build it, what modules or platforms to use and what settings or specifications i need to do in the Twilio/clicksend platforms.

If it is not possible to send the messages from my own number and has to be a clicksend or twilio number I would need a way to obtain the message that the person responded to my message said and i would need to forward that or store that to myself. hope this makes sense, would really appreciate any insights.

Also let me know if its even possible when based in Ireland

3

Hi @Adam6

I think this is possible in Ireland, but the key design decision is where the incoming call lands.

When you say ‘missed call’, do you mean a call that rings on your actual mobile and you do not answer, or are you open to calls first being handled by a business/virtual number?

-John

5

A call that rings on my mobile and i dont answer it

6

There is an Android app that you can download on your phone to trigger a make scenario, but due to policy changes in android 11, the Watch Incoming Calls module no longer returns a phone number.

Twillio has a watch calls module, but its not instant, its a polling module.

Maybe you can have a combination of the too where the androind app triggers a scenario when a call arrives that then goes and checks on twillio to get the number and return an sms from your number.

7

Yes, this is entirely possible while based in Ireland, but you have to navigate specific regulatory and routing hurdles unique to European telecom and Irish numbers. AI assistants like Claude often default to U.S.-centric telecom rules (where 10-digit local numbers support unrestricted two-way SMS), which is why you are running into roadblocks.

Here is a breakdown of how to solve this, what rules apply to Ireland, and how to architecture the workflow:

1. Can you use your own mobile number?

No, direct carrier numbers (like a standard Irish mobile SIM on Vodafone, Three, or Eir) cannot natively trigger instant webhooks or automated SMS via API unless you use hacky, high-risk Android gateway apps that violate terms of service and get banned quickly.

  • The Solution: You must provision a virtual cloud phone number via Twilio or ClickSend that handles the inbound call tracking and SMS dispatch.

2. Twilio vs. ClickSend for Ireland (The Regulatory Hurdle)

  • Twilio: Twilio supports Irish local and mobile-capable virtual numbers, but Ireland enforces strict regulatory requirements for voice and SMS. To purchase and use Irish numbers legally on Twilio, you will typically need to submit regulatory documentation (proof of address/identity matching the local region) to pass compliance. Furthermore, A2P (Application-to-Person) messaging rules in Europe require proper sender ID registration to avoid carrier filtering.

  • ClickSend: ClickSend is often much easier for international users to spin up quickly without heavy compliance friction, and they provide reliable virtual numbers. However, you must verify local delivery rules for outbound SMS to Irish mobile networks.

3. How to Architect the Automation (The Blueprint)

To get it working under a 1-minute delay without getting lost in complex code, use an automation platform like Make.com connected to Twilio or ClickSend:

  • Step 1: The Trigger (Voice Webhook): Configure your Twilio/ClickSend virtual number’s Voice URL to point to a webhook when a call is not answered (using a “No Answer” or “Call Status: missed/completed without connection” webhook trigger).

  • Step 2: The Delay Buffer: Add a 30-to-60-second delay module. Pro tip: This prevents the text from firing instantly if a caller hangs up and immediately calls back, or if it was just a quick pocket dial.

  • Step 3: The Outbound SMS: Fire the SMS module to send the automated text back (e.g., “Hi, sorry I missed your call! How can I help you today?”).

  • Step 4: Handling Replies (Two-Way SMS): Since you are using a virtual cloud number instead of your personal SIM, any reply the customer sends will hit your Twilio/ClickSend inbox. To get that message forwarded to you, set up an Inbound SMS Webhook in Twilio/ClickSend that triggers a secondary Make.com scenario. This scenario can instantly forward the text to your personal phone via SMS, push notification, or log it directly into a Google Sheet/Slack channel so you never miss a response.

If you want a hand mapping out the exact webhook payload structure or configuring the filter logic to catch missed calls accurately, let me know!