Send to Dropbox - Email attachments to a Dropbox folder
Get My Receipts by cloudHQ - Organize your receipts in one click
Sortd - Rated the #1 App for Gmail
ProductBeat - A beautifully designed Jira alternative for product teams
gfeed - Turn your Gmail into a social feed to read through faster
Slack E-mail Add-ins - Quickly forward emails and attachments to Slack