Penny Post

Penny Post is a system to combat spam emails by making the sender "pay for email" by spending a few seconds of computing time. Outgoing mail is marked with postage stamps that convince the receiver that the sender is genuine.

Project Samples

Project Activity

See All Activity >

License

GNU General Public License version 2.0 (GPLv2), GNU Library or Lesser General Public License version 2.0 (LGPLv2)

Follow Penny Post

Penny Post Web Site

Other Useful Business Software

Auth0 B2B Essentials: SSO, MFA, and RBAC Built In

Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.

Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.

Rate This Project

User Ratings

5.0 out of 5 stars

★★★★★

★★★★

★★★

★★

★

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

User Reviews

Filter Reviews:

All

jonasaoestman Posted 2010-04-29

It really works! Please begin develop this Add-on again!

Additional Project Details

Operating Systems

Linux, Windows

Languages

English

Intended Audience

End Users/Desktop

User Interface

Command-line, Plugins

Programming Language

Java, JavaScript

Related Categories

JavaScript Email Software, JavaScript Security Software, Java Email Software, Java Security Software

Registered

2007-07-30

Similar Business Software

WiseStamp

WiseStamp is an award-winning, enterprise-grade email signature management solution designed to scale with the needs of market-leading organizations. Trusted by over 1.2 million customers worldwide, WiseStamp enables businesses to centrally create, manage, and deploy professional, on-brand email...

See Software
TrafficGuard

With TrafficGuard, you'll never have to worry about polluted traffic ruining your campaign efforts again. Our cutting-edge ML/AI-driven technology filters out dumb and sophisticated, fraudulent traffic in real-time, ensuring that your ad spend is directed towards real, high-quality clicks...

See Software
BrandMail

BrandMail®, developed by BrandQuantum, is a software solution that seamlessly integrates with Microsoft Outlook to empower every employee in the organization to automatically create consistently branded emails via a single toolbar that provides access to brand standards and the latest...

See Software
Proton Mail

Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your...

See Software
EasyDMARC

EasyDMARC is a B2B SaaS solution that makes email authentication simple for small, medium, and enterprise businesses. In short, we secure domain and email infrastructure, protecting you and your business from phishing (email spoofing) attacks and increasing email deliverability. EasyDMARC’s...

See Software
Air

Air gives your team's work a memory. Every asset, version, and approval is tracked in one place, and that context powers everything that happens next: finding what's approved in seconds, adapting it for any channel, and scaling it everywhere without breaking brand. Air connects the creative team...

See Software