Yahoo! Mail vs Type Mail 

With this Yahoo! Mail feature users can open any e-mail in a new tab and get back to the mail list without having to close the e-mail that the user is currently reading.

Similar to Mail app bundled in Windows 10, Yahoo! Mail allows users to set images from Flickr as the background image for the app.

Stationary is an add-on that's only available in Yahoo! Mail. It allows users to customize and enhance the look of the email. Things like image borders, letter style etc. can be changed before sending the email to intended recipients.

Type Mail has clearly put effort in to make their interface easy on the eyes by following Material Design style guidelines and easy to overview by color-coding messages and including details such as service logos and sender's profile to quickly understand where the message is coming from.

Users of Type Mail who own an Android Wear device can receive notifications of e-mails on the device as well as manage an read them.

Type Mail can scroll through messages in the inbox via the volume buttons. So you can avoid swiping on the screen if you don't want to.

It's possible to customize what actions are performed and what options for actions are presented via swipes as well as email view actions.

The app icon has unread badge that allows checking if there are any new messages without having to open the application.

It's possible to "hide" a message for a set amount of time, which gets the message out of your way until you're ready to deal with it.

Users are able to set timed lock screens for the app, protecting sensitive mail from anyone who would try to access it on the device.

Including LED, Do not Disturb times and customizable sounds.

Supports an unlimited number of accounts that can all be viewed from a single inbox.