SquirrelMail is an open-source web-mail package that is based on PHP language. It provides a web-based-email client and a proxy server for IMAP protocol.
Categories: Webmail
Official website: https://squirrelmail.org
SquirrelMail is ranked #10 of 12 in Webmail by website adoption.
WhatStack detects SquirrelMail by analyzing HTTP headers, HTML source code, JavaScript globals, meta tags, cookies, DNS records, and ads.txt entries using signature-based pattern matching across 10 different analyzers.