Master Inbox
For lead-gen & outbound agencies

Run every client’s outbound replies from one place.

Every client, dozens of mailboxes, one workspace each. Replies come back tagged, routed, and provable, so you can scale client count without hiring another reply handler.

Scale your client count without hiring another reply handler.

Client A

Dana O. · “Send the deck over.”

9 new replies
Client B

Priya N. · “What’s pricing for 10 seats?”

5 new replies
Client C

Marcus T. · “Works for me Thursday.”

12 new replies
Master view3 clients · 26 new replies
What actually changes

The week before, and 30 days after.

The week beforeOne or two account managers

Figuring out which client workspace has which reply

Waiting on Smartlead or Instantly filters that load late or wrong

Missing replies during workspace swaps

LinkedIn in one browser tab, email in another

30 days afterThe same team

Email and LinkedIn in one inbox, with filters that hold at volume

Replies sent from Slack or HubSpot, for both channels

Reply agents drafting, answering FAQs, and offering calendar times

Speed to lead under 5 minutes, from 20 or more

Under 15 clients? The Ramp program is the Agency plan at $299 a month while we help you grow into it.

A day across 10 clients

One screen, ten books of business.

Agency work is not one inbox. It is ten, each with its own mailboxes, its own campaigns, and a client who wants an answer today. Here is what that day looks like on one reply layer.

8:40 AMMaster view

Morning triage, every client at once

Open one screen and see new replies across your whole book. Interested first, objections next, the rest can wait. No logging into ten tools to find out where the day starts.

1:15 PMPer-client reporting

“What did you send, and who replied?”

The question every client asks on a call. Open their workspace, filter to the campaign, and read back what went out, what came back, and who worked it. The answer takes seconds, not a spreadsheet night.

4:30 PMWorkspace isolation

New client, isolated from minute one

Connect their mailboxes and LinkedIn into a fresh workspace. Their data stays theirs. The same prospect showing up at two of your clients never merges into one record.

White-label and embed

Your brand in front of the client. Not ours.

On the Enterprise plan, Master Inbox branding comes off. Embed a client’s inbox view inside your own portal with an iframe, isolated to that one client. API access is included if you want to build your own layer on top.

Available on the Enterprise plan.See pricing

agency.yourdomain.com
RepliesEmbedded view
Dana O.“Send the deck over.”Interested
Priya N.“What’s pricing for 10 seats?”Interested
Marcus T.“Works for me Thursday.”Meeting

Illustration of an embedded client view.

The economics

Grow client count without the second reply handler.

The usual answer to more clients is more people watching inboxes. That is the line that breaks an agency’s margin first.

The usual way

Hire another reply handler

Cost per added client: another person, every time.

  • Cost climbs with every client you sign
  • Ramp time before anyone is trusted with a client’s inbox
  • Coverage stops the moment they log off
  • Quality drifts between whoever happens to be on shift
On Master Inbox

Add another workspace

Cost per added user: flat, because seats are unlimited.

  • Seats are unlimited, so VAs and client owners cost nothing extra
  • Pricing scales with mailboxes connected, not headcount
  • Triage, tagging, and drafting run before anyone opens a tab
  • Every client gets the same process, not the same person

No salary math here, because yours is yours. The point is the shape of the line: your cost follows mailboxes, not headcount.

Inside the product

Ten clients’ replies, one triage screen.

The Master Inbox unified inbox, showing replies threaded per prospect across connected mailboxes.
The unified inbox. Filter to one client’s workspace to work their queue, or stay on the master view to see the whole book. Real product screenshot, with names and details anonymized.
From an agency owner
That’s the kind of tool I would have built if I had to build one for my business. If all my 15, 20 clients can be in the same space, it’s going to be magic.
OLOlivier L.Founder, LeadLion
FAQ

Agency questions we hear most

Does each client’s data stay isolated?

Yes. Every client gets its own workspace with its own mailboxes, replies, and reporting. The same prospect showing up at two different clients never merges into one record.

Is white-label available?

White-label is available on the Enterprise plan. It removes Master Inbox branding and lets you embed a client’s inbox view inside your own portal with an iframe, isolated per client. Enterprise also includes API access.

Are user seats unlimited?

Yes. Seats are unlimited on every plan, so you can staff VAs and reply handlers across every client without paying per seat.

Which sequencers do you work with?

Any of them. SmartLead, Instantly, Bison, HeyReach and more, plus LinkedIn accounts. Your clients keep sending exactly as they do today and Master Inbox handles what comes back.

See all integrations
Can I show clients their own reporting?

Yes. Each client’s workspace has its own reporting on replies, response times, and booked meetings, so you can put real numbers in front of a renewal call.

Put every client on one reply layer.

See how agencies run their whole book of business in Master Inbox.

20 minutes, live with your own mailboxes. No setup before the call.