Smartlead
Smartlead sends the campaigns but misses forwards and new-address replies. Master Inbox catches every Smartlead reply, tags it, and syncs it to your CRM.
How Smartlead works with Master Inbox
Smartlead is the workhorse of high-volume cold email: unlimited mailboxes, automatic rotation, and warmup that keeps you landing in the inbox. What it doesn't do well is reply handling. Its built-in inbox shows campaign replies only, so the second a prospect forwards your email internally, answers from a new address, or an out-of-office fires, Smartlead goes blind, and those are the warmest leads you'll ever get. Master Inbox connects to the mailboxes behind Smartlead and threads every reply, tracked and untracked, tagged by intent, so nothing your sending volume produced slips through the cracks.
What you can do
- See every Smartlead reply in one inbox, not campaign by campaign or account by account
- AI-tag each reply as it lands: interested, objection, OOO, referral, asked-for-pricing
- Catch the forwards and out-of-office replies Smartlead drops into an untracked folder
- Mark interested leads do-not-contact in Smartlead so you stop emailing buyers
Why it matters for outbound revenue teams
Smartlead is built to send, and it's good at it. But the replies, where deals are actually won, get scattered and missed. Master Inbox is the reply layer that turns your Smartlead spend into worked, tracked, closed conversations.
“My favorite thing is that you’re catching untracked replies, because I know we missed out on deals.”
Smartlead + Master Inbox FAQs
How do I connect Smartlead to Master Inbox?
Bulk-import the sending mailboxes your Smartlead campaigns run on, then open Settings, choose Integrations and connect Smartlead with your API key. Campaign context then travels with each reply, so you can see which sequence started every conversation. Onboarding is done with you on your real inboxes.
Does Master Inbox change how Smartlead sends?
Sending stays exactly as you set it up in Smartlead: campaigns, mailbox rotation and warmup keep running. Master Inbox works on the reply side, so keep Smartlead for sending and use Master Inbox to read, label and answer what comes back.
Which Smartlead replies show up in Master Inbox?
Every reply that reaches your sending mailboxes. Master Inbox reads the mailboxes themselves, so campaign replies arrive together with forwards, CC replies, out-of-office messages and replies from new addresses, all threaded per prospect in one queue instead of campaign by campaign.
How are Smartlead replies labeled in Master Inbox?
Each reply is labeled by intent the moment it lands, using thirteen default labels or your own taxonomy, on your own OpenAI, Anthropic or OpenRouter key. Reps open the interested replies first, and saved views keep the rest sorted until someone needs them.
What happens to Smartlead warm-up emails?
Warm-up tags sync from Smartlead and are excluded from your reply queue automatically. Warmup keeps running in Smartlead as before, while reps and alerts only see real prospect replies.
Can agencies keep each Smartlead client separate?
Yes. Master Inbox gives every client a workspace with its own mailboxes, labels, members and limits, cloned in one click. Client logins are scoped to their own inbox only, while your team still works every client's replies from one place.
Is Master Inbox priced per seat?
No. Master Inbox is priced on connected mailboxes and client workspaces, with unlimited users on every plan, so adding a rep or a client login never adds a seat fee. Every plan starts with a free 7-day POC, and the pricing page lists the plans.
How long does Smartlead setup take?
Onboarding is done with you rather than handed off to docs. During the free 7-day POC we connect your Smartlead mailboxes and API key on your real inboxes, so you see live replies inside the trial week.
Popular Smartlead pairings
Master Inbox is the reply router in the middle of your stack.
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