Within Clear Books, you can arrange for emails to be sent to your customers and suppliers with information about new invoices, quotes, purchase orders and statement balances. 

By default, emails sent via Clear Books will use a generic Clear Books email address, you can view this on the Home > Accounts menu. 

Emails will be sent from this generic address and the Reply-To email address will be set as the Organisation email address (Settings > Organisation > Details & Tax), so that if your customer replies, you will receive the response in your inbox.

Alternatively, you can choose to use your Organisation email address (set on the Settings > Organisation > Details & Tax menu) as the address emails are sent from.  

However, some mail systems may reject delivery of emails sent via Clear Books using this method as they will consider them to be spam. You will need to ensure your Clear Books Emails are not rejected by recipients.