Authors that provide web services require member registration. You can use Mailshell to manage your membership with these services. Free fax and phone numbers. Companies such as JFAX or eFax offer free fax and message services. Some sites such as LifeMinders keep track of your reminders.
Many merchants provide price updates.
Many sites that offer you services in exchange for your personal information. Mailshell will not reveal your email address to these services. You can use some of the services to create an alternate personal profile and give that information to potential marketers. Keep out junk mail. Many services will use your personal information to send you junk email.