Outlook plugin: warning about accessing email addresses

Outlook plugin: warning about accessing email addresses

I've just installed the Zoho Calendar plugin for Outlook.  When I try and sync, I get a warning that a program is attempting to access the email addresses I have stored in Outlook.  This makes me nervous enough that I'm not going to enable this functionality until I understand what is going on here.  Is Zoho attempting to store, send emails to, or do anything else with the email address information I have saved in Outlook?  I've been burned by programs doing this before and generating emails to people that appear to come from me.