Send email from Sage CRM using personal email and record it as communication

Hi all,

how do I send email personally from my own email that is linked to my CRM username, and record it as one of my communication?

For example:

from my Case ABC, I go to communication, I want to send email, but the sender should be my own email address, not the email address that is set in E-mail Configuration. That is email for marketing purposes.