by Kirill Popov and Loren McDonald

The average length of home ownership is about seven years. We haven't seen similar figures for how long companies stay with one e-mail marketing technology or vendor, but it's reasonable most companies will eventually switch technologies.

At our company, 99 percent of our clients have switched from another technology, whether homegrown software, a purchased software system, use of an agency, or direct use of a hosted e-mail service provider (ESP) solution. Some new clients need more advanced features, while others want to improve their delivery rates.

If you plan to switch e-mail marketing providers in the future, keep this checklist in mind as you make the transition from your old technology to the new one - read the full article on ClickZ.