BlueMail allows you to customize the font sizes. In order to do so, please follow these steps: More (o o o) | Global | Customize Appearance | Text Size.
You can change the font size of the Mail List, Mail View and New Mail (Compose).
The options you have include Default, Smaller, Small, Medium, Large, Larger.
On iOS
BlueMail allows you to customize the font sizes. In order to do so, please follow these steps: Settings | Global Settings | Customize Appearance | Text Size.
You can change the font size of the Message List, Folder List.
The options you have include Default, 14, 16, 18, 22, 24.
On Desktop
BlueMail allows you to customize the font sizes. In order to do so, please follow these steps: Settings | Global Settings | Customize Appearance | Text Size/Font size.
You can change the font size of the Mail List, Mail View, Folder List, Conversation List
You can also change Font Family.