Catch real replies that arrive after an out-of-office

When a lead labeled Out of office writes again, Master Inbox marks the thread unread and posts it to Slack, because the second message is often a real question.

Hygiene

SlackSDR managerRepTeam plan

When

Incoming MessageAll channels

Only if

Label is Out of office

Then

Mark as unreadSo it shows as new

And

Notify in SlackPost the new message and thread link to #sales

Why teams run it

An out-of-office followed by a question was being missed as a non-reply.

Set it up in Master Inbox

In Master Inbox, open Settings, then Workflows, and click Add a workflow.
Name it Catch real replies that arrive after an out-of-office.
Set the trigger to Incoming Message and choose All channels.
Add a condition: Label is Out of office.
Add the action Mark as unread: So it shows as new.
Add the action Notify in Slack: Post the new message and thread link to #sales.
Save the workflow and switch it to Active.

Before you start, connect Slack under Settings, Integrations.

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. This workflow also uses conditions: add them under trigger_config.conditions, as shown on the conditions page.

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": "Catch real replies that arrive after an out-of-office",
  "trigger_type": "incoming_message",
  "trigger_config": {
    "channel_ids": [
      "-1"
    ]
  },
  "action_configs": [
    {
      "action_type": "mark_as_unread"
    },
    {
      "action_type": "slack_notify",
      "payload_variables": [
        "name",
        "company_name",
        "label_names",
        "text",
        "thread_url"
      ],
      "show_draft": true
    }
  ]
}'

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: "Catch real replies that arrive after an out-of-office". 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

Will it fire on a second auto-reply?

Yes, it fires on any new message. The alert lets a person decide in seconds.

Can I relabel the thread automatically?

Remove the Out of office label in the same workflow and label it by hand once you have read it.

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.