Our commitment to restoring email trust.
With deep expertise in internet security and resilient infrastructure, the Valimail team regularly contributes to standards and threat detection communities — driving today’s email authentication policies and tomorrow’s cybersecurity advancements.
We have a corporate commitment to lifting up the messaging industry as a whole and working collaboratively with partners throughout the ecosystem to restore trust to email.
We participate in several organizations working to make a difference.
We write and maintain open source code used by the largest mailbox providers (like Oath/Yahoo!) and make our contributions available to all, fixing issues in an accessible, scalable, global way.
We contribute to the protocols that continue to advance email and make it better for everyone.
Organizational Involvement and Leadership Positions
Technical Committee Co-Chair
Collaboration Committee Co-Chair
M3AAWG is where the industry comes together to work against botnets, malware, spam, viruses, DoS attacks and other online exploitation.
AuthIndicators Working Group works to create a richer, more trustworthy inbox experience for all email users worldwide while increasing the use of authentication to reduce email fraud and is the creator of the Brand Indicators for Message Identification (BIMI) standard.
OTA is an initiative within the Internet Society (ISOC), a global non-profit with the mission to promote the open development, evolution, and use of the Internet for the benefit of all people throughout the world.
H-ISAC is a global, non-profit, member-driven organization offering health care stakeholders a trusted community and forum for coordinating, collaborating and sharing vital Physical and Cyber Threat Intelligence and best practices with each other.
Open Source Contributions
ARC Test Suite
OpenARC is a community effort to develop and maintain an open source library for producing ARC-aware applications, and a "milter"-based filter for providing ARC service. Valimail has contributed, tested, and managed the completion of this project.
Valimail contributed code that supports ARC within Mail::DKIM, which implements the various components of the DKIM and DomainKeys message-signing and verifying standards for Internet mail.
dkimpy is a Python module that implements DKIM (DomainKeys Identified Mail) email signing and verification. It also provides helper scripts for command line signing and verification. Valimail contributions support ARC functionality and bug fixes as the standard evolves.
Dalli is high performance, pure Ruby client for accessing memcached servers and is maintained by Valimail.
DNSAdapter contains a set of useful adapter classes that present a common set of return types and errors for DNS services. This adapter layer makes it simple to swap in different DNS providers and was written by Valimail.
Created and maintained by Valimail, Postshift provides an Amazon Redshift extension for ActiveRecord 5 (Rails 5) PostgreSQL adapter based off of the existing activerecord5-redshift-adapter.
Mailman ARC patch
Valimail built the Mailman ARC patch, which provides ARC functionality for Mailman 3. Mailman is one of the most widely deployed mailing list management software in the world.
Valimail maintains OpenDMARC and contributes code to support the evaluation and reporting of ARC. OpenDMARC is a community effort to develop and maintain an open source package for providing DMARC report generation and policy enforcement services.
OpenDKIM is maintained by Valimail. We contribute code to support the evaluation and reporting of ARC to this TDP software that supports 100's of millions of mailboxes.
Valimail wrote this password policy enforcement extension for devise-gem, which is a flexible authentication solution for Rails based on Warden.
Coppertone, written and maintained by Valimail, provides a Sender Policy Framework (SPF) toolkit for Ruby and includes tools for parsing SPF DNS records, evaluating the result of SPF checks for received emails, and creating appropriate email headers from the SPF result.
Authentication Headers, written and maintained by Valimail, is a Python library for the generation of email authentication headers. The library can perform DKIM, SPF, DMARC, and ARC validation and generate and affix the corresponding headers.