InboxFee
Make strangers pay for their cold emails
InboxFee is an Android app that helps you deal with cold emails from strangers in your Gmail inbox. You can auto-reply with an 'inbox fee invoice' saying 'pay a small fee if you want me to read your stuff'. There are options to help you keep your inbox clean, like 'mark email as read if I sent an invoice', or 'add star if invoice is paid', etc. This way you can tell strangers that your attention is valuable and remove clutter from your inbox at the same time.
