Zipping attachments If you add several attachments to an email, you have the option to zip all attachments and attach the zip file to the email. This applies to all attachments used as attachment (not body or alternative body) including attachments added using script functions. To zip attachments 1 In the email editor, select Compress attachments into one Zip-archive. 2 In Zip-archive name, enter the name of the zip file to attach to the email.