Learning Objective
By the end of this tutorial, you'll know how to set up inbox rotation across multiple sending accounts, distribute leads across your team, and keep a consistent sender for each lead throughout the sequence.
Why This Matters
Inbox rotation lets you send higher volumes of cold emails while respecting daily sending limits for each inbox. By distributing sending across multiple accounts, you reduce deliverability risk and scale outreach without overloading a single sender.
Prerequisites
Before you start, make sure you have:
Multiple email accounts connected to Lemlist (see Getting Started: Connect your email to Lemlist)
A campaign created with at least one email step
Access to the Sequence section of your campaign
Understanding of email sending limits (see Technical Setup: Email sending limits explained)
Core Lesson: Step-by-Step Workflow
Phase 1: Enable Inbox Rotation
Step 1: Open your campaign
Go to Campaigns, then select the campaign you want to edit.
Step 2: Select multiple senders for the campaign
In your campaign’s Sequence, click the Sender for email steps dropdown, then select the email accounts you want to include in the rotation.
Step 3: Confirm inbox rotation is enabled
After selecting more than one sender, the sender field will display Multiple senders. This means Lemlist will rotate senders for new leads added to this campaign.
Phase 2: Understand the Default Assignment Logic
Here’s how Lemlist assigns leads when you use multiple senders:
For Step 1: Lemlist distributes new leads across the selected senders.
For Steps 2, 3, and beyond: Each lead keeps the same sender that was assigned at the beginning of the sequence, so the conversation stays consistent.
✅ Key principle: Unless you override it on a step, each lead keeps a one-to-one relationship with their assigned sender throughout the entire sequence.
Phase 3: Force a Specific Sender for a Step (Optional)
Step 4: Turn on “Force a specific sender for this step”
Click the step you want to customize, then enable Force a specific sender for this step.
Step 5: Choose the sender for that step
Click Select a sender…, then pick the team member/email account you want to use for that specific step.
💡 Use case: Have a specific person send a key follow-up (e.g., a manager sending a final email), while keeping the rest of the sequence on rotation.
Phase 4: Handle Sender Issues
Step 6: Check for sender problems
If a sender can’t be used (for example, the mailbox is disconnected, authentication failed, or sending limits are reached), update that mailbox before launching or continuing sending.
Common causes include:
Disconnected email accounts
Exceeded sending limits
Authentication failures
Step 7: Resolve sender issues
Fix issues by:
Reconnecting the account in Settings → Email Accounts
Waiting for daily limits to reset (typically at midnight in your timezone)
Re-authenticating accounts with expired credentials
Practical Application / Real-Life Example
Agency scenario: A B2B agency managing 5 clients needs to send 500 emails daily per client (2,500 total). With a standard 200 emails/day limit per inbox, they would need:
Without inbox rotation: 13 separate campaigns (one per inbox), creating management overhead
With inbox rotation: 1 campaign with 13 senders in rotation
Each sender handles ~38 leads automatically
Stays within the 200/day limit
Maintains consistent communication
Task management: When leads reply or require follow-up, tasks route to the sender who contacted that lead. Check teammates’ task lists to see assignments based on sender responsibility.
Troubleshooting & Pitfalls
Issue: A sender can’t be used
Root cause: Email account disconnected, sending limits exceeded, or authentication expired
Fix:
Go to Settings → Email Accounts to reconnect or re-authenticate
Wait 24 hours if daily sending limits were reached
See Troubleshooting: Email connection issues for detailed solutions
Issue: Leads receive emails from different senders in the sequence
Root cause: Force a specific sender for this step was enabled on one or more steps
Fix:
Review each email step in your Sequence
Disable the forced-sender option unless intentionally required
Default behavior keeps the same sender per lead automatically
Issue: Uneven distribution across senders
Root cause: Some senders were added after the campaign started, or leads were manually assigned
Fix:
Rotation distributes new leads, but doesn’t rebalance existing assignments
For future campaigns, configure all senders before launching
Existing campaigns maintain their current assignments
Issue: Tasks appear in teammates’ lists unexpectedly
Root cause: Tasks are assigned to the sender who contacted each lead
Fix:
This is expected, tasks follow the sender-lead relationship
Review sender selection in the campaign Sequence
Use forced sender on specific steps if tasks must route to specific people
Optimization Tips
To maximize inbox rotation effectiveness:
Use multiple inboxes for high-volume campaigns to reduce deliverability risks and stay under daily limits
Track sender performance in analytics to identify accounts with better engagement
Force a specific sender only on strategic steps (e.g., a senior person sends the final touch)
Monitor connected inbox health so a disconnected sender doesn’t block sending
Keep sender profiles consistent (signatures, formatting) for a professional experience