group mails, selec only one email address from contacts with many email-addresses

group mails, selec only one email address from contacts with many email-addresses

Some of my contacts have two or three different email addresses. Although I have selected one as primary, when sending group-mails to my categories, the email will be sent to all of any particular contact.

Example:

Thomas has two email addresses:  email1 (as private email and selected as primary) and  email2 (as work email) . He is one of the contacts of the category kayak-polo. When I send a group-mail to the category kayak-polo it should be sent only to the primary email but zoho-mail sends it to both.

Is there any way to avoid this?