Sends

Routes the reply

Closes

Connect QuickMail with Slack

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

Start your free 7-day POCFree 7-day POC. Unlimited users on every plan.

Master Inbox is the router in the middle

QuickMail runs cold email campaigns with inbox rotation and deliverability tools. Slack is where your team already lives all day. A hot QuickMail 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 QuickMail reply is tagged interested
Include the prospect, message preview, and thread link every time
Alert on every QuickMail reply, not just the first
Keep the whole team in the loop without living in QuickMail

Automations to run on QuickMail + Slack

The workflows a GTM engineer would set up first. Each one is a real Master Inbox trigger and real actions, built in the app in a few clicks or with one API request.

Positive QuickMail reply posts to Slack with the draft

Team plan

When Incoming Message: positive sentimentNotify in Slack: Prospect, label, message and the drafted reply with Accept and Edit

Reps answer from Slack in seconds, which is where time to lead is won.

Call request posts the phone number

Team plan

When Add Label: Call/ReplyNotify in Slack: Name, company and phone number

Whoever is free dials while the prospect still remembers replying.

Unanswered positive reply after 4 hours

Team plan

When Due ReminderNotify in Slack: Escalate to the manager channel

Nothing positive sits unanswered overnight.

Not interested opts the lead out of QuickMail

Team plan

When Add Label: Not interestedDelete the QuickMail lead: Opt the lead out

One label stops every future touch, so nobody gets a follow-up after saying no.

"Not now" goes into a QuickMail nurture

Team plan

When Add Label: NurtureAdd to QuickMail campaign: Nurture sequenceSet a reminder: Check back in 90 days

Timing objections become next quarter's pipeline instead of a dead thread.

From the workflow library

Build it with the API. QuickMail has 3 endpoints of its own in the Master Inbox API (List QuickMail tags and workspaces; connect or disconnect QuickMail), and workflow actions include Add to QuickMail campaign, Set a QuickMail tag and Remove a QuickMail tag. See the API · All QuickMail workflows · Slack alert templates

How the QuickMail to Slack flow gets set up

1Connect the mailboxes behind QuickMailBulk-import the sending mailboxes your QuickMail campaigns run on. Master Inbox reads the mailbox itself, which is how it catches forwards, out-of-office chains, and new-address replies that land outside QuickMail's campaign inbox.
2Link your QuickMail workspaceIn Settings, open Integrations and connect QuickMail with your API key. Campaign context now travels with each reply, so you can see which sequence started every conversation.
3Install 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.
4Go live with white-glove onboardingOnboarding is done with you, not handed off to docs: we wire the QuickMail to Slack flow on your real inboxes during the free 7-day POC.

Illustration of integration settings in Master Inbox, where QuickMail 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 QuickMail, 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

QuickMail + Slack FAQs

What triggers Slack from QuickMail?

Any QuickMail 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 QuickMail 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 team 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

The QuickMail integration

The Slack integration

Keep reading

Glossary: Response SLA Glossary: Reply labeling Glossary: Lead routing Glossary: What is a sequencer?Glossary: Out-of-office handling

Similar pairings

QuickMail + HubSpot QuickMail + Pipedrive QuickMail + Attio QuickMail + GoHighLevel Smartlead + Slack Instantly + Slack EmailBison + Slack Reply.io + Slack

Free 7-day POC

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

We wire up the whole flow and onboard your team. If the QuickMail to Slack handoff isn't tighter inside a week, you walk. Free 7-day POC: add a card at signup, nothing is charged until day 8.

Start your free 7-day POC