Master Inbox
All integrations
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Master InboxRoutes the reply
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Connect Expandi with Slack

Every Expandi reply, pushed to Slack the instant it lands.

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Master Inbox is the router in the middle

Expandi runs safe, cloud-based LinkedIn outreach with smart, human-like sequences. Slack is where your team already lives all day. A hot Expandi reply is worthless if nobody sees it in time. Master Inbox sits between them: the second a reply lands and gets tagged, it fires Slack with the prospect, the preview, and the thread, on the first reply and every follow-up, so nothing rots in an untracked folder.

What you can do

  • Fire Slack the instant an Expandi reply is tagged interested
  • Include the prospect, message preview, and thread link every time
  • Alert on every Expandi reply, not just the first
  • Keep the whole team in the loop without living in Expandi

How the Expandi to Slack flow gets set up

  1. 1Connect the LinkedIn accounts Expandi runs onAdd the LinkedIn accounts behind your Expandi outreach. Every conversation threads into the same inbox as your email replies, per prospect.
  2. 2Install the Slack reply botConnect Slack and pick a channel. Tagged replies arrive with the prospect, preview, and thread link, and your team can answer without leaving Slack.
  3. 3Go live with white-glove onboardingOnboarding is done with you, not handed off to docs: we wire the Expandi to Slack flow on your real inboxes during the free 7-day POC.
The integrations catalog inside Master Inbox, where Expandi and Slack get connected
The integrations screen in the product: each tool connects from Settings, no engineering required.

Why it matters for outbound revenue teams

The moment a lead replies in Expandi, speed decides whether you win it. Master Inbox to Slack makes sure the right person is pinged and the right workflow fires, every time.

We have automations that go to Slack, but not the reply. We still have to jump in.
ARAlejandro R., Leadrs Global

Expandi + Slack FAQs

What triggers Slack from Expandi?

Any Expandi reply, or a label like "interested," fires Slack with the prospect and thread details attached.

Do I get alerted on follow-up replies too?

Yes. Slack fires on the first Expandi reply and every follow-up after it.

Can reps reply from Slack without opening the app?

Yes. The Slack reply bot posts the reply with an AI draft, and reps can edit and send from the thread.

Can notifications route per client or per founder?

Yes. Each workspace can post to its own channel, and label-based routing pings only the person who owns that kind of reply.

Will warm-up emails create false "interested" pings?

No. Warm-up tags sync from your sequencer and are excluded, so the channel only fires on real prospect replies.

Go deeper

Keep reading

Similar pairings

Free 7-day POC

See Expandi, Master Inbox, and Slack working together on your real inboxes.

We wire up the whole flow and onboard your team. If the Expandi to Slack handoff isn't tighter inside a week, you walk. No commitment, no credit card.

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