Vqmod based extension allows setting a separate store logo for order confirmation and other customer emails.
This can be useful in many cases i.e. when the store logo is displayed on a black or dark background and the white background typical in emails breaks the intended design.
Adds the option to the standard store settings at System > Settings > Image tab. Simply pick your custom email logo to upload and save.
Tested on the latest OpenCart 22.214.171.124 but it should work on other 3.x versions. Compatible with cloud installations!