Master Inbox
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Email sending

ZapMail

ZapMail provisions the mailboxes. Master Inbox imports them as channels, so every reply they receive lands in one inbox, threaded per prospect and labeled by intent.

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How ZapMail works with Master Inbox

ZapMail provisions Google and Microsoft mailboxes for cold outbound. Master Inbox connects to your ZapMail account, lists your ZapMail workspaces and their mailboxes, and imports the ones you select as channels, so you do not add each mailbox by hand. Every reply those mailboxes receive, from whichever sequencer sent the campaign, lands in one inbox, threaded per prospect and labeled by intent. Each import is kept in the import history, and the same flow is available through the Master Inbox API.

What you can do

  • Import ZapMail mailboxes as Master Inbox channels instead of adding them one by one
  • Browse your ZapMail workspaces and pick which mailboxes to bring in
  • See every past import in the import history
  • Run the import through the Master Inbox API when you provision new mailboxes

Why it matters for outbound revenue teams

New mailboxes only pay off once their replies are worked. Importing straight from ZapMail puts a new batch of sending mailboxes into the reply inbox, with your labels, views and routing already in place.

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

ZapMail + Master Inbox FAQs

How do I connect ZapMail to Master Inbox?

Connect your ZapMail account with its API key, pick a ZapMail workspace, select the mailboxes and import them. They appear as channels, ready for replies. Onboarding sets it up with you during the free 7-day POC.

Can the ZapMail import run through the API?

Yes. The Master Inbox API has Zapmail endpoints to connect an account, list workspaces and mailboxes, import the selected mailboxes and check the import history. The import step itself needs a Master Inbox login.

Which sequencers work with imported ZapMail mailboxes?

Master Inbox reads the mailboxes themselves, so replies to campaigns sent from Smartlead, Instantly, EmailBison or any other sequencer land in the same inbox, threaded per prospect.

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