54% of e-mail marketers cannot confirm delivery

Although e-mail marketers say their biggest challenge is getting their messages delivered into consumers' inboxes, more than half, or 54%, say they don't use e-mail delivery auditing tools to proactively improve results, according to JupiterResearch.

Although e-mail marketers say their biggest challenge is getting their messages delivered into consumers' inboxes, more than half, or 54%, say they don't use e-mail delivery auditing tools to proactively improve results, according to JupiterResearch.