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Anytime Mailbox - Sign up for a virtual digital mailbox and get your postal mail online. View and manage your snail mail from your computer or from any mobile device.
Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.
iPostal1 - Join the fastest growing virtual mailbox and digital mailbox service company in the country. View the plan that best fits your needs and just like that, you have a new address and so much more. Learn more here.
Roundcube - Web-based IMAP email client
Earth Class Mail - Cloud-based, secure virtual mail & address solutions.
Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.