Send to Dropbox - Email attachments to a Dropbox folder
Marker.io for Slack - Turn screenshots into Slack messages ✌️
Get My Receipts by cloudHQ - Organize your receipts in one click
Instashot - Access text from any image instantly.
OneBox.io - Sync e-mail attachments to GDrive, Dropbox, Box, or OneDrive
ScreenTray - A better way to capture, annotate and share screenshots