Integrating customer data is the greatest challenge for marketers, according to a survey of marketing industry executives by Alterian. The enterprise marketing software company conducted the survey at its Annual Summit last month.

Forty-three percent of respondents said their e-mail marketing channel is integrated with offline channels such as direct mail, according to Alterian, and 12% said it is integrated with online channels such as search, Web sites and RSS. A third (33%) said e-mail is a standalone channel for them. Read the complete article on BtoBOnline.