Adding a logo or business image in your Organisation settings will appear within emails adding a bit of personalisation, colour and legitimacy.
How to Add
Select your account name in the top left-hand corner and head to the Organisation Settings.
In the General settings, scroll down to Organisation Logo.
Upload an image into the section.
This image will display within emails sent from the system.
Please note that images can also be added as merge tags in emails - double-check that any emails sent do not contain double imagery, as the logo added in your Organisation Settings will automatically appear in these emails.