So, trying to make sense of what you are saying.Р”РЋ.

All I'm doing is using the alias created in the administration section to send an email but still my own email adress is shown when the final mail arrives and not the alias. The security is already there when creating aliasses in office 365. When you have a self hosted exchange server, you can send mails to whoever from whoever you want. Fact that I'm creating aliasses in office 365 means that I already have administration permissions. that allows you to configure your own mail server with customizable sender addresses. Use a mailer service like SendGrid, MailChimp etc. Send an email from a Shared Mailbox (Assuming you have permissions to send emails from a shared mailbox.Р”В¤.

Acquire a 'service account' and create a Office 365 Outlook connection with Service account credentials and then configure your flow to send emails using the connection that contains the service account creds.Р”Р€. Having said that if you don't want to send emails from your Personal account, you still have the following options:Р”Сћ. If say for eg: 'Joe' is sending an email from and we allow Joe to override the 'sender' address to - the receiver could potentially be baited into thinking that the email actually came from is why it is highly unlikely that free-form 'sender address' override will be coming to flow soon. Allowing free-form aliases is a security risk.

Send email as alias name