Email Users → Export → MasterInbox. Winnr downloads a CSV with each mailbox's SMTP and IMAP credentials. In MasterInbox, open your email-account settings and use the bulk import option, providing the values from the export. Once connected, replies from all your Winnr mailboxes flow into MasterInbox's unified dashboard.
MasterInbox is a unified-inbox tool built for cold-email operators — it centralizes replies from many sending accounts into one dashboard. Winnr provisions and warms the mailboxes; MasterInbox manages the replies.
What's next
Step-by-step
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1. Filter to the mailboxes you want to export
Open the Email Users page in Winnr. Filter by domain, tag, or warming status to narrow to just the mailboxes you want centralized.
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2. Click Export → MasterInbox
Hit Export and pick MasterInbox. Winnr builds a CSV with the SMTP and IMAP host, port, username, and password for each mailbox.
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3. Open MasterInbox
Log into MasterInbox and go to your connected email-accounts settings, where all your sender accounts are managed.
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4. Bulk import the accounts
Use the bulk import option and provide the SMTP/IMAP values from the Winnr CSV. IMAP is what MasterInbox uses to pull each mailbox's replies into the shared inbox.
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5. Verify connection status
MasterInbox tests each mailbox's IMAP connection and marks it connected. Confirm every mailbox is green so no replies are missed.
Frequently asked questions
What is MasterInbox for?
It's a unified inbox — it consolidates replies from all your sending accounts (and LinkedIn) into one dashboard with filtering, tagging, and bulk-reply tools.
Does MasterInbox need IMAP?
Yes. MasterInbox reads mail over IMAP to centralize replies, so the IMAP fields in the Winnr export are required.
Does MasterInbox send cold campaigns?
Its focus is reply management, not sequencing. Many teams pair it with a sender like Smartlead or Instantly and use MasterInbox purely as the inbox layer over the same Winnr mailboxes.
Should I warm on Winnr first?
Warming happens on the sending side. Warm on Winnr ($0.60/mailbox/month) via whichever sender you use; MasterInbox just reads the resulting inbox.