Save My Attach Saves Your E-Mail Attachments to Your Android Phone
If you use an Android phone, you almost certainly use the bundled Gmail app--and you almost certainly have encountered the annoying inability to save e-mail attachments onto your device. The Gmail app gives only a "preview" option for a limited number of file types. Since Gmail is otherwise so useful as a catch-all filing cabinet for miscellaneous files, this shortcoming cries out for a remedy. Save My Attach does what it says, without any fuss.
To use Save My Attach, you just press the Preview button next to a file attachment in Gmail, and select Save from the list. Done. Save My Attach also works in the Email app. You can specify the destination folder and the file name.
There's not much more to say: This is a simple app, but it works well and is a must-have for heavy e-mail users.