You can’t send an email out if you don’t have anyone to send it to, so uploading a mailing list is one of the first steps to take when you get started.
Adding a list of contacts is very straightforward. When you go to the Contacts section and click Add Contacts, you’ll see a dialog box that provides three options:
Add Individual, to simply follow the steps to add a single person.
Copy & Paste Email Addresses, just follow all of the steps to add a small group of people.
Import From a File, to add a list of any size from one address to the population of a good sized European nation.
Let's walk through the steps to Import a File, since this is the main way to add a list that includes more than a few people.
Selecting this option prompts you to choose a CSV file to upload from your computer.