In Winnr go to Email Users → Export, choose Smartlead, click Export, then Download CSV. In Smartlead, open Email Accounts, add accounts and use the bulk CSV upload for SMTP accounts. Match the columns to Smartlead's fields if it asks, set a daily limit of 10 to 20 cold emails per mailbox, and confirm every mailbox connects.
Smartlead is a cold-email sequencer with campaigns, a master inbox and its own warmup. Winnr provides the domains, mailboxes and warming; Smartlead handles campaigns, sequences and personalization. Smartlead's master inbox reads replies over IMAP and works alongside Winnr's own inbox.
Sending limits
Keep cold sending at 10 to 20 emails per mailbox per day (15 is a good default), and keep each mailbox's total, cold plus warming, at 50 or under. Warm new mailboxes for at least two weeks before they send cold, and longer on a brand-new domain.
What's next
- Turn on warming for new mailboxes
- Instantly setup
- EmailBison setup
- Fix a mailbox that will not connect
Step-by-step
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1. Select the mailboxes in Winnr
Open Email Users and tick the mailboxes you want for this campaign. Search or the Domain filter help you find them. If nothing is ticked, the export includes every mailbox in your account.
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2. Export in the Smartlead format
Click Export, choose Smartlead under Export Format (type in the search box to find it quickly), then click the Export button.
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3. Download the CSV
Click Download CSV as soon as it appears. The link expires after 15 minutes, so if it has expired just run the export again. The file holds mailbox passwords in plain text, so keep it private.
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4. Upload to Smartlead
In Smartlead, open Email Accounts, add accounts and choose the bulk CSV upload for SMTP/IMAP accounts. Upload the file and match any columns Smartlead does not recognise.
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5. Set limits and confirm
The file has no daily-limit column, so set each mailbox's daily limit in Smartlead. Check every mailbox shows as connected before adding it to a campaign.
Frequently asked questions
What is in the Smartlead file?
domain, from_email, from_name, user_name, password, smtp_host, smtp_port, imap_host, imap_port, imap_username, imap_password and footer. These are the same columns as the Default export.
Do I need to warm before importing to Smartlead?
Warm new mailboxes for at least two weeks before cold sending. You can import them into Smartlead while they warm; just do not start campaigns yet.
Should I use Smartlead's warmup or Winnr's?
Pick one per mailbox. Winnr's built-in warming is $0.60 per mailbox per month; if you use it, keep Smartlead's warmup off so the mailbox is not warmed twice and stays at 50 emails a day or less in total.
Can I import again as I add mailboxes?
Yes. Export just the new mailboxes (tick them on Email Users) and upload that file, so you do not re-import accounts Smartlead already has.
Does sending through Smartlead use my Winnr dedicated IP?
Yes. Smartlead hands each message to the Winnr SMTP host in the file, so it goes out the same way as any other mail from your Winnr mailboxes, including through a dedicated IP if one is set up on your account.
What connection settings are in the file?
Each row carries that mailbox's own SMTP host (port 465, SSL) and IMAP host (port 993, SSL). The username is the full email address, and the same password works for SMTP and IMAP. Mailboxes on different domains can use different hosts, so keep the values from each row rather than copying one host across every mailbox.
Some mailboxes failed to connect. What now?
The usual cause is an old password: a password changed in Winnr after the export will not match the file. Export those mailboxes again and re-import them. If a fresh export still fails, see the mailbox authentication troubleshooting guide.