Hi,
1. No, Gossamer Mail works with a mail server like Sendmail, QMail, Microsoft Exchange, or Communigate Pro. A mail server is still required. Gossamer Mail provides the web interface to send/receive email.
2. You don't need Communigate Pro, but you do need some mail server. You need access to an SMTP server to send mail, and access to a POP server to retrieve your mail.
3. What do you mean by error rate? We have a site that is getting more then 400 messages a minute, and Gossamer Mail is handling that fine.
4. No, there are no IMAP features yet.
5. Only if you want us to do the move for you. You own the software, and can move it to another server if you like. We typically charge $75 dollars to do a reinstall.
6. What do you mean by "machine generated mail"?
7. No, only the person who is reading their email can get infected by a virus, the server won't be infected.
Hope this helps,
Alex
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Gossamer Threads Inc.