Mailfred is a non-profit product without any monetization. It was initially built for our personal use. As several blogs wrote about Mailfred it has gotten more popular.
On 20 November 2014 the Google Apps Script service from Google has depreciated their data storage capabilities. As Mailfred doesn’t work without data storage we decided to rebuild Mailfred from scratch on Google AppEngine for which we pay a monthly fee.
We intend to keep Mailfred free but we need your support. If you like MailFred and you want to support what we do, then you can buy us a coffee. Any contribution is highly appreciated.