MailBox:代辦事項郵件應用工具是一個結合了待辦事項概念的郵件處理軟體，使用者可以透過手勢決定如何處理每一封 E-mail，極大的方便了移動裝置的辦公處理郵件。

除了回信、轉發等一般 E-mail 程式要有的功能之外，使用者在 Mailbox 上將手指向右滑，可將 E-mail 封存(會出現“打勾”的記號)，向右滑動幅度再大一點，可將它刪除(會出現“打叉”的記號)。

因為Mailbox要在左右滑動之間同時兼顧“封存”、“刪除”和“稍後處理”這三大功能，我們對於前兩項“封存”和“刪除”都是向右滑動有疑慮，萬一使用者向右滑得太多而將 E-mail 刪除了怎麼辦?或許向右滑動是“封存”，向右滑到底進入“代辦選項”，向左滑動代表刪除會更好一些。

What began with an observation — that people used email as a (terrible) to-do list — evolved into Orchestra To-do, the App Store’s 2011 Productivity App of the Year.

But no matter how much we used Orchestra, people kept sending us tasks via email. And one day it dawned on us: rather than moving these tasks somewhere else, what if we transformed the inbox where they already live?

We’ve come to believe email is here to stay. And while we can’t get away from it, we can change how we interact with it. We can put email in its place.

That’s where Mailbox comes in. We’re creating a mobile-first email experience from the ground up — challenging assumptions about how email works and redesigning the inbox for a world on the go.

We’re taking the very best experiences from the apps we use everyday and applying them to this archaic medium. It’s a new way of looking at your email, but when you use Mailbox for the first time, we believe you’ll say “of course.”