Creating a "Remind User" link in Views
Instead of Views, I would use Rules + Rules Scheduler (bundled with Rules).  This will allow the site itself to automatically send e-mail reminders at intervals you specify.  Johan Falk explains how to set this up in his Rules Scheduler screencasts.

EDIT: To do this in Views, I would add the Flag module, which also integrates with Rules.  Set up a flag for "Send reminder e-mail" (give permissions only to admin, etc.)  Then, write a rule that sends an e-mail that is triggered on the event "User is flagged..."  Last, add the flag as a relationship in your view and then add a flag link.

You will have to consider what to do about unflagging users.  By default, the user will show up as flagged after a reminder is sent, which might be nice because you'll know that the user has already received a reminder.  However, if you need something more sophisticated, you could make an additional rule that automatically unflags the user after he/she is flagged and keep track of the number of reminders you have sent by using flag's count property (also accessible via rules/views).