How many people can be on a contact list?

A contact list can contain an unlimited number of contacts. It can also contain zero contacts.

An empty contact list can be used as a container for addresses generated by: 

• Uploading a file of contacts that you already own. The file used in the upload is limited to 5mb. 
• Collating contacts selected with dynamic rules.
• Manually pulling in contacts that already exist in the account.

When uploading a contact list, you will be asked to confirm that all of the contacts have opted in to receive email marketing from you, or to send an opt-in email to all of your contacts, please review What is the Anti-Spam law? prior to uploading contacts to ensure that you are following the laws that apply to the country or region you are sending emails to and from.