TL;DR
Connect multiple sending addresses to one lemlist account. Email gives you 3 slots per user, Multichannel gives you 5, and you can purchase additional email addresses at $9/month each.
This guide also explains the difference between email slots (how many addresses you can connect) and sending addresses (the actual mailboxes you use).
Step-by-Step Guide
Option 1: Add a Secondary Email Address (Within Your Plan's Slots)
Click your profile image in the bottom-left corner of lemlist, then select Settings.
In Account settings, go to Sending settings, expand the Email section, and click Connect email address.
Follow the authentication prompts for your email provider to connect the additional sending address.
Once connected, the new email address will appear in your sending email addresses list alongside your primary address.
Option 2: Purchase Additional Email Address Slots
Open Plans & billing, go to the Users tab, then click Upgrade in the Additional Emails section.
Choose how many additional email slots you want to add to your team, then confirm the purchase.
In the users table, find the team member who should use the extra slot, then click the + button in the Additional emails column to allocate it.
After the slot is assigned, follow Option 1 to connect the new sending address for that user.
Key Concept: Plan-Based Email Slots
Email slots allow you to connect one email address per slot for campaign sending and warmup.
Your plan determines how many sending addresses you can connect per user:
Email: 3 email addresses per user
Multichannel: 5 email addresses per user
Additional slots: Purchase more at $9/month per address
All secondary email addresses must belong to the same person as the primary account holder.
Ensure that any unused or disconnected email addresses are managed appropriately to optimize your slot usage.
How You'll Know It Worked
✓ The new email address appears in Settings → Sending settings alongside your primary address.
✓ The email account shows a green connection status indicator.
✓ The address becomes available to use in campaigns.
Troubleshooting
Issue: I can't add a secondary email address.
Root cause: You've reached your plan's email slot limit or you're on a trial/freemium account.
Fix: Check your available slots in Plans & billing. If you've used them all, purchase additional email slots for $9/month each. If you're on a trial, upgrade to Email or higher to access multiple email slots.
Issue: The secondary email address won't connect.
Root cause: Authentication failed or the email provider settings are blocking the connection.
Fix: Make sure you've granted lemlist full access during authentication. Try disconnecting and reconnecting the email address if needed.
Issue: I don't see the additional email addresses I purchased.
Root cause: The slots were purchased but not assigned to the correct user yet.
Fix: Go to Plans & billing, find the user in the table, and assign the slot from the Additional emails column.
Issue: The secondary email address appears but won't send emails.
Root cause: The email has sending restrictions or hasn't been prepared for sending yet.
Fix: Verify the mailbox is fully connected and test with a small campaign first.
Additional Troubleshooting Scenarios
If your attempted email address is already linked to another or expired lemlist account, disconnect it there first before adding it again.
For users on a free plan or with unpaid invoices, clear any billing issues or upgrade before purchasing additional slots.
Frequently Asked Questions
Can I delete an email to free up slots?
Yes. Deleting a connected email frees up its slot so you can connect a different address.
How can I reduce the number of additional slots?
First, unassign any extra slots currently in use. Then reduce the number of purchased slots in your billing settings.
Can I connect email addresses from different people to the same account?
No. All email addresses linked to one lemlist account must belong to the same person. If different team members need their own sending addresses, add separate user seats for them.
What happens if I downgrade my plan?
If your new plan includes fewer email slots, you'll need to disconnect any extra addresses above the new limit.
How do additional email addresses affect my billing?
Additional email slots are billed at $9/month each and follow the billing cycle of your subscription.