You can stop certain emails from being added to your audience by using Loops’ Email Blocklist feature. Go to Settings -> Account and click Add pattern. In the input, enter an email pattern to block. For example, you can input *@example.com to block all email addresses ending with @example.com, or *@*.edu to block all .edu email addresses. To block individual email address, simply insert the full address like [email protected]. The blocklist feature works across all methods that allow signups to your audience: manually adding in Loops, CSV uploads, forms, the API and all integrations.