For more information about Hashcash, please see http://www.hashcash.org/
For issues see here.
Privacy Policy: This app uses GMail App APIs to access to your gmail inbox, to tag, filter and re-file emails. It does not store or save any personal information, nor send any info to external sources.
Terms of Service: This app offers NO WARRANTY or GUARANTEE OF FITNESS. USE AT OWN RISK. The author assumes NO responsibility for any effects, intentional or otherwise, on contents of your gmail inbox.
The solution consists of two parts:
- The Hashcash Mint Chrome extension/google-gadget, which lets one generate a valid hashcash stamp from within the gmail web interface or from anywhere while running Chrome; and
- The Hashcash for Gmail google app script, which runs periodically on your gmail inbox to scan for valid hashcash stamps and flag the emails accordingly.
Some readers may say: 'Doesn't gmail do an awesome job of detecting spam already? I used to think so, but their filters really started breaking down for me a few months ago. If someone can explain why that may be occurring, I'd appreciate an explanation. I'm sick of spam.
1. Installing the Hashcash Mint Google Gadget
1a. For Non-Chrome Browsers [Firefox etc.]
- Enable 'Labs' in your gmail account (Gear icon->Settings->Labs) if it isn't already;
- Enable the 'Add any gadget by URL' feature;
- Add the Hashcash Mint gadget (url: http://www.blitter.com/~russtopia/googlegadgets/hcgen.xml)
1b. For Chrome Browsers
After clicking 'Mint' and the Hashcash stamp has been generated, you just hit CTRL-V in an email while composing to paste the just-generated stamp (the extension has the 'copy-to-clipboard' permission so it should do the 'copy' CTRL-C for you.)
2. Installing the Hashcash for Gmail App Script
2a. For Non-Chrome Browsers [Firefox etc.]
You likely require a Google account for this, but since this is intended for gmail you already have that, right? :)
2b. For Chrome users: Installing the Hashcash for Gmail App
Hashcash is an idea that really should have taken off by now.. but email servers and clients have never seemed willing to agree to implement it, which is a shame as it really could make spam nearly disappear -- if enough people would just use it!
So I hope to make this as easy to use as possible -- if you like it, please tell those you know to try using it too. If you're someone who knows how to write Outlook, Thunderbird or other email plugins, consider writing an equivalent to my Hashcash for Gmail inbox scanner for those mail hosts, so others can easily start using Hashcash!
Hashcash for Gmail -Support & Issues
Version 4 [2013-11-27]:
Issue
There appears to be a bug in the auto-registration of the timed trigger in the mail scanner. The trigger is supposed to run once a minute to scan for incoming mail with hashcash stamps.Solution
- Open chrome://apps and click on the "Hashcash for Gmail" icon;
- Click on the "Disable" button which should change to "Enable";
- Click on "Enable" again and it should change to "Disable"
- Close the app.
The per-minute trigger should now be active and emails recently placed in your Inbox will be scanned and tagged accordingly.
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