Very slow email delivery on new Droid 4

[deltaskye]

Unlike my BlackBerry, my new Droid takes 15 - 20 minutes to deliver my Outlook email to my inbox. A Verizon Wireless tech suggested I install K9, which I am looking into. She believes part of the problem is my email provider, but my BlackBerry email delivery from the same vendor was instantaneous. We checked the push data option and it was not offered.

Any suggestions?