Master Inbox
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Email sending

Instantly

Instantly sends the campaigns but misses forwards and new-address replies. Master Inbox catches every Instantly reply, tags it, and syncs it to your CRM.

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How Instantly works with Master Inbox

Instantly runs high-volume cold email with built-in deliverability, but its Unibox shows campaign replies only, with almost no filtering, so reps scroll to find the three that matter and miss the forwards, out-of-office, and new-address replies entirely. Master Inbox connects to the mailboxes behind Instantly and threads every reply, tracked and untracked, tagged by intent, so the hot ones surface first and nothing your Instantly spend produced slips. Master Inbox also has incoming webhook ingestion: form fills from landing pages, ad forms, and lead-gen forms, plus visitor-identification events, land straight inside the matching prospect thread and are readable by your reply agents.

Deep dive: Master Inbox + Instantly

What you can do

  • See every Instantly 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 Instantly drops into an untracked folder
  • Mark interested leads do-not-contact in Instantly so you stop emailing buyers

Why it matters for outbound revenue teams

Instantly 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 Instantly spend into worked, tracked, closed conversations.

If your lead’s not in a campaign but they reply, it goes into the other box.
RBRees B., Astra GTM

Instantly + Master Inbox FAQs

Does Master Inbox catch replies Instantly misses?

Yes. It reads the mailbox directly, not just the Instantly campaign, so forwards, out-of-office, and new-address replies all get caught and threaded per prospect.

Can I reply to Instantly conversations from Master Inbox?

Yes, straight from Master Inbox through your connected mailbox, keeping the full thread intact, so reps live in one place.

Will it stop Instantly from emailing people who already replied?

Yes. Interested or closed leads can be marked do-not-contact so Instantly stops sequencing prospects who are already in conversation.

Popular Instantly pairings

Master Inbox is the reply router in the middle of your stack.

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