Abstract: A method, system and software enable e-mails to be sent from a mobile wireless device on which an email client application is installed while roaming on any wireless IP network, without limitation due to the home ISP restrictions. This involves the steps of: automatically or manually configuring the roaming user's email client to deliver email locally on the mobile device; so intercepting emails sent by the e-mail client; determining if the currently connected network is on a predefined list; avoiding outgoing email server flooding; routing of the email through a dedicated secure SMTP server with SMTP authentication and encryption; and associating wireless network log-in credentials with SMTP authentication credentials in a secure and hidden manner.