If you'd like to update the data or add a new subscriber to your list, it's really simple.

Just go into the Databases section and click on the "Add People" button, then "Upload from file". 

Make sure your file is in CSV format and upload it.

Then match the fields like usual and click next.

Now select "Upload this file to an existing list" and choose the list you'd like. If you'd like to only send to this new batch of data, create a new group too.

Before you hit finish please note BetterMail will do the following with the new data: 

- Using the email address to match, overwrite all old data with the new including any blank fields 

- Where there is no match, add new subscribers 


 We also support using Alternative Keys like an account number if you don't want to match by email address.