Any time you send email to someone through GroupWise, their email address is added to your Frequent Contacts Address Book . Once an email address has been added to the Frequent Contacts book, it is there until you delete it. When you enter the address the first time and make a mistake, that mistake will remain in the Frequent Contacts book until you delete it. That's often why you keep sending email to the incorrect address.
Frequent Contacts is part of autoname completion.
If you have a similar address in the Frequent Contact Book, you may send email to the wrong person. I finish my message and send it. If you experience problems addressing an email message, check your Frequent Contacts Address Book and delete any address that may be causing you problems. Mac users don't have this option available to them. Try typing Devries, then use the arrow keys to go from Henry to Rick, and so on.