When viewing an email in Outlook and there isn't a related record for the sender/recipient in Salesforce, Ebsta's side panel will prompt you to create a new record for them as below:
Alternatively, you can use the search function to type in the person's name who you wish to add to Salesforce.
1. Click Create New +
2. Select Lead from the dropdown menu.
3. Salesforce will open in a new browser tab and a New Lead window will automatically be open for you to complete in the usual way.