Build a daily call list from phone numbers found in email signatures

When a phone number is found on a lead, Master Inbox labels it Call and moves it to a Call queue list, so callers start each day with a list of leads they can actually reach.

CallingRepSDR managerTeam plan

When

Found Phone NumberFrom a signature, Sales Intelligence or enrichment

Then

Add labelsCall

And

Move to listCall queue

Why teams run it

Signature numbers are free and current, and setters no longer hunt for them thread by thread.

Set it up in Master Inbox

In Master Inbox, open Settings, then Workflows, and click Add a workflow.
Name it Build a daily call list from phone numbers found in email signatures.
Set the trigger to Found Phone Number and choose From a signature, Sales Intelligence or enrichment.
Add the action Add labels: Call.
Add the action Move to list: Call queue.
Save the workflow and switch it to Active.

Or create it with the API

Everything in the workflow builder is also in the Master Inbox API. This request creates the same workflow. Replace the example ids with your own label, list and campaign ids from GET /workflows/filter-fields.

curl -X POST https://api.masterinbox.com/api/api-webhook/v1/api/workflows/create-workflow \
  -H "Authorization: Bearer $MASTER_INBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "name": "Build a daily call list from phone numbers found in email signatures",
  "trigger_type": "found_phone_number",
  "trigger_config": {},
  "action_configs": [
    {
      "action_type": "add_labels",
      "label_ids": [
        176480
      ]
    },
    {
      "action_type": "move_to_list",
      "inbox_type_id": 52311
    }
  ]
}'

Full reference: workflow API guide and API docs.

Or ask Claude, ChatGPT or Grok to build it

Our workflow guide is written for AI agents to read. Give your assistant your API key and this prompt:

Read https://app.masterinbox.com/public-workflow-api.md and use my Master Inbox API key to create this workflow: "Build a daily call list from phone numbers found in email signatures". First call GET /workflows/filter-fields and look up my label, list and channel ids, then create the workflow and tell me what you set up.

Questions

Do I pay for signature numbers?

No. Sales Intelligence reads numbers and socials from signatures that are already in the thread.

Can callers see only this list?

Yes. Give callers member permissions scoped to the Call label.

Can I build this workflow through the API?

Yes. Send the create-workflow request shown on this page with your Master Inbox API key. The API checks the payload first and lists every problem by field if anything is off.

Which plan includes this?

This workflow works on the Team plan. Every plan has unlimited users and starts with a free 7-day POC.