Is there a way to password protect pdf for emails sent through a bot?

Is there a way to send emails through my Google Email. I have certain pdf i need to send to fax numbers, but it only recognizes the fax numbers if the email

New to Appsheets, i am using a google sheet and want to trigger an email with pdf attachment. I need to set a condtion under the EVENT which looks for a particular text from a drop down list set as ENUMLIST however the condtional area seems to only b...