Yes - you can create 'groups' of contacts in your address book known as email lists. An email list can contain up to 2,500 email contacts, which is the limit of the online address book (per account). Please contact us if your list exceeds 2,500 emails and you would like to discuss options.
By sorting your contacts into email lists, you can quickly address an invitation to many people with a single click. There are no limits to how many different email lists you can create, and the same individual can be assigned to multiple email lists.
There are also no limits to how many invitations you can send, how many events you can have in your account or how many people you can have on your guest list.