TL;DR
Connect multiple sending addresses to one lemlist account. Email Pro gives you 3 slots per user, Multichannel Expert gives you 5, and you can purchase additional email addresses at $9/month each. Takes about 5 minutes to add a secondary address.
Step-by-Step Guide
Option 1: Add a Secondary Email Address (Within Your Plan's Slots)
Click your profile image in the bottom left corner of lemlist, then select Settings.
In Account settings, go to Sending settings, then expand the Email section.
Click Connect email address.
Review the “Connect multiple email addresses” notice, then click Accept and continue.
Select your email provider (Google/Gmail, Microsoft/Outlook, or SMTP/IMAP), then click Connect for the provider you’re using.
Follow the authentication prompts for your selected provider.
The new email address will appear in your Sending Settings alongside your primary address. You can now use it in campaigns.
Option 2: Purchase Additional Email Address Slots
Click your profile image in the bottom left corner of lemlist, then select Plans & billing.
In Plans & Billings, click on the gear icon next to the Additional email
Enter the number of additional email slots you want to purchase and click on Confirm (each additionaly bought email slot is 9$)
In the users table, find the team member you want to allocate additional email slots to, then in the Additional emails column click the + button.
Follow Option 1 steps to connect the new email addresses to that user.
Key Concept: Plan-Based Email Slots
Your plan determines how many sending addresses you can connect per user:
Email Pro: 3 email addresses per user
Multichannel Expert: 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.
How You'll Know It Worked
✓ The new email address appears in Settings → Sending Settings alongside your primary address.
✓ When creating a campaign, the new address appears in the Sender dropdown.
✓ The email account shows a green connection status indicator.
✓ Test emails sent from the new address land in your inbox without errors.
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 current slots in Plans and Billing. If you've used all available slots, purchase additional email addresses for $9/month each. If you're on a trial, upgrade to Email Pro 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. For Gmail, check that IMAP is enabled and that less secure apps access is configured properly. For Outlook, verify that the account isn't using multi-factor authentication that blocks third-party apps. Try disconnecting and reconnecting the email address.
Issue: I don't see the additional email addresses I purchased.
Root cause: The slots were purchased but not allocated to your user account.
Fix: Go back to Plans and Billing and check the Additional emails column in the users table. Make sure you've assigned additional slots to the correct team member(s). Contact your account admin if you don't have permission to allocate slots.
Issue: The secondary email address appears but won't send emails.
Root cause: The email hasn't been warmed up yet or has sending restrictions.
Fix: New email addresses should go through a warm-up period before being used for campaigns. Check the email's warm-up status in lemwarm if you're using it. Verify the daily sending limit hasn't been reached. Test with a small campaign first before scaling up volume.
Frequently Asked Questions
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 you want to add email addresses from different team members, you'll need to add separate user seats to your team.
What happens if I downgrade my plan?
If you downgrade to a plan with fewer email slots, you'll need to disconnect secondary addresses that exceed your new limit. lemlist will notify you which addresses to remove before the downgrade takes effect.
How do additional email addresses affect my billing?
Additional email addresses are billed at $9/month each and follow the same billing cycle as your primary plan. If you're on an annual plan, additional addresses will be billed annually. If you're on monthly billing, they'll be added to your monthly invoice.