You get 5MB of space for storing messages. Note that the web-based interface currently does not handle HTML email. Note also that you can only use this service to receive messages, but you'll need some other way to send them. Free POP email service with a 30MB storage quote. SoftHome sends users ads in their mailbox to offset the cost of providing the service.
Web access is also available.
The folks at Subdimension claim they do not monitor their system, except for resource abuse, and they ask no questions when you sign up. They support POP3 and IMAP4 and offer accounts with 10MB of storage space. Web-based access is also provided. If you are in the UK and use the free dialup access, you can also use this service to send outgoing messages - otherwise you'll have to have another way to send out messages. You get a relatively generous 10MB of storage space for email messages, and you can set up autoresponders and sort incoming mail into folders.