Head over to your lemlist account.
Settings > Integrations > API
Once done, copy your API key and then paste it in the integrations section of Smartwriter
Select Lemlist and then paste in the API key you've copied from Lemlist, Name the API key so you can easily identify it (name it whatever you want)
Head over/back to your personalised icebreaker file and click on "Push Data"
Select your Lemlist campaign you want to add the leads to.
Once finished, make sure you select the "email" column and then click the "Start Push" button
If you don't have a campaign go to Lemlist and create one