Switches mail server when roaming The purpose of this tool is to provide a way for users who roam between two or more networks to easily use more than one mail server for their outgoing mail. As defense against spam, many ISPs are closing their mail servers that prevents roaming users from routing their mail through their that ISP from an outside network. Further, some ISPs are blocking outbound mail being sent directly to other servers due to spammer abuse of relays and direct delivery to the recipients. All of this adds up to great inconvenience to the roaming user.The trend is to make roaming users send mail via the current local SMTP server, wherever you are actually roaming from. Normally, this would mean reconfiguring your mail client with the SMTP server you need to use every time you roam to a different network. MailRoam makes this much easier by allowing you to switch between providers with a few mouse clicks, or even automatically.