Since v1.16, the encrypted mail service allows the use of themes with Cascading Style Sheets. You can pick a theme from the Themes folder or create a custom one yourself using CSS. Feel free to use the theme template provided as a starting point.
These themes were developed for v3.12.x of ProtonMail.
- Pick one from the themes folder in the repository.
- Select the theme and select the raw view to see all the code.
- Select all and copy the code.
- At ProtonMail's website head over to Settings, click the Appearance tab.
- Paste the code under the Custom Theme section and press save.
In order to remove a theme, press clear.
The theme should be applied and you should see the changes immediately.
Check out some of the available themes you can choose from.
In short, no. All themes listed here will always style existing elements from ProtonMail's UI and not import any third party files from anywhere. At the time I created these themes I've received a few directions from ProtonMail's co-founder Jason Stockman in order to avoid breaking layout and security issues.
If you notice something's missing feel free to make a pull request. If you have no time to fix it please open an issue.
ProtonMail is a great email client, I enjoy working on this project and provide themes for all. Please consider getting me a coffee as it goes a long way to help me maintain it and keep adding color to your private email experience! Thank you 🙇🏻
