How to change the from address in emails

I switched the domain of a site from ourhappyguests.com to islandbabyvi.com last month.

When emailing a customer, the from email still shows the old email address of hello@ourhappyguests.com instead of the intended hello@islandbabyvi.com





The hikashop settings are as follows and all show the correct address:






The joomla settings are as follows:






Are there any other settings that could be affecting this?


Many thanks

okay found where to do this.
It is the Hikashop...systems...email tab and to change it manually for each of the custom emails