Master Inbox
All integrations
Lemlist logoSends
Master InboxRoutes the reply
Slack logoCloses

Connect Lemlist with Slack

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

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Master Inbox is the router in the middle

Lemlist pioneered multichannel outreach across email, LinkedIn, and calls with deep personalization. Slack is where your team already lives all day. A hot Lemlist 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 a Lemlist reply is tagged interested
  • Include the prospect, message preview, and thread link every time
  • Alert on every Lemlist reply, not just the first
  • Keep the whole team in the loop without living in Lemlist

How the Lemlist to Slack flow gets set up

  1. 1Connect the LinkedIn accounts Lemlist runs onAdd the LinkedIn accounts behind your Lemlist 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 Lemlist to Slack flow on your real inboxes during the free 7-day POC.
The integrations catalog inside Master Inbox, where Lemlist 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 Lemlist, 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

Lemlist + Slack FAQs

What triggers Slack from Lemlist?

Any Lemlist 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 Lemlist 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 Lemlist, Master Inbox, and Slack working together on your real inboxes.

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

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