Many small business owners do not have the benefit of an IT staff responsible for maintaining a mail server on the site. As such, this service is outsourced to any number of hosting providers (ISP). When working in your office, this is not a problem, since it is connected to your ISP's network, either wired or wireless. When working outside the network (in an airport, cafe / bar that provide wireless access, hotel, etc), which is at the mercy of that particular network. For quick browsing and personal email, this is not a problem since you can simply use the browser of your choice to browse the Internet or connect to your favorite Web mail client. The problem occurs when you have to send an email related to business with your business domain (joebloe@mybusinessdomain.com).
Sending an email to a client for business reasons a personal account is simply unprofessional and I would assume most legitimate businesses they disapprove. Unless you have a specific domain hosted by your ISP and are using the Web client, you will not be able to send email business domain through a public wireless network. Many ISP's SMTP (Simple Mail Transfer Protocol server, through which the email to another mail server) are configured so that users can not access the service outside its network. This is done for a variety of reasons, but mainly as a safety measure, the defense against hackers and malicious spammers can send thousands of emails to unsuspecting recipients and compromise the SMTP service performance. Receive e-mail through a service such as POP3 is generally not a problem, since this restriction does not affect the presumption that they were properly authenticated. What are the alternatives? If your organization is supported by an SMTP server and the appropriate technical resources, you can use a VPN (virtual private network) to connect securely through your SMTP server business through any publicly accessible wireless network.
VPN infrastructure acts as a secure "tunnel" for your business network through the Internet, which allows a remote user to conduct business in a public place as if it were connected to its network of local businesses. Once you have installed the VPN client and VPN equipment is properly configured within the network of your organization, simply launch the VPN application and email client to use and you should be able to send mail mail from a public access point just like your office. The VPN acts as a secure tunnel over the Internet to your organization's network. While this solution works quite well when applied properly, it requires a substantial commitment of resources to establish and maintain. The cost is not feasible for small business.
If you have access to an SMTP service does not have the restriction referred to above should be able to send business-related e-mail using any mail client that supports SMTP from anywhere with Internet access. Fortunately, a number of services that allow users to send emails of business where an Internet connection is available. The use of these services include the registration of the email address you want, select the level of service you require, and follow the instructions to configure your email client. The advantage of using "SMTP as a service" is that the business traveler is not limited to the point of public access to the Internet to send business emails. The disadvantage is that the information transmitted from your laptop can be transmitted in the theft of clear and susceptible. VPN is the best solution for secure Internet transactions.