Under the new microsoft outlook e mail system brought in this year i have a problem with the maximum number of e mails sent daily which appears to allow but 100-any more not actually being sent or delivered as junk mail?

I have  414 contacts in a group which i want to e mail with the same message -but it appears i need to do so over 5 days ? On the people site How do i actually select the first 100 group members from the 414 "faces" in the group and send the first 100 e mails out?