Gmail is part of a free Google account, and its robust feature set makes it compelling. It’s available on your phone, computer, or the best tablets -- Android or otherwise. While the robust feature set is helpful, some useful features are buried within the settings and may be unknown. These are the settings I changed in Gmail to make it more useful and fun.

One fun feature of Gmail is the ability to change its appearance through themes. Themes range from solid colors to photos to drawings, and incorporate the colors of your background into the UI elements of Gmail. Themes help you make Gmail your own and make it exciting to log in each time.

To find these settings, open Gmail and select the Settings gear in the upper-right corner. Then, select See all settings > Themes > Set theme. You’ll find preset theme options from Google and the option to use your own photo by tapping My photos in the lower-left corner.

Have you ever thought it was tedious to write the same phrase in your emails or been unsure how to finish a sentence in an email? Smart Compose can help. Smart Compose suggests additional words to help you finish your sentences using machine learning. It’s autocomplete, but for sentences instead of single words.