To use the stock photo search, load up your file manager and select 'Search free photos' in the top-left corner.
Enter a search term and press enter. You will be provided with a list of photos, find the one you like, hover over it and click 'Import'.
The image will then be downloaded to your file library. You can now load it into your email.
Commercial usage rights
All images are pulled from stock photo providers who operate under the Creative Commons Zero (CC0) license and are free to use commercially. The repository providers are Unsplash, Pexels and Pixabay.