Mr. Mail is described as 'MrMail offers flexible Zimbra Hosting packages suitable for everyone, from single home user to a large company (SME) at superb prices and the best support in the industry' and is an website in the Online Services category. There are more than 25 alternatives to Mr. Mail, not only websites but also apps for a variety of platforms, including iPhone, Android, iPad and Android Tablet. The best alternative is Gmail, which is free. Other great sites and apps similar to Mr. Mail are Outlook.com (Freemium), Posteo (Paid, Open Source), Zoho Mail (Freemium) and Roundcube (Free, Open Source).
Zoho Mail is a webmail service built with the needs of a modern business in mind. It provides features for business users to communicate effectively while catering to the customization and mailbox management needs of IT administrators.
Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking.
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.