MailStore licenses offer flexible, per user ordering with reduced pricing based on volume. A minimum number of 5 must be purchased and additional users can be purchased at any time.
A MailStore user is classified as any person whose email is archived by MailStore although users may have any number of mailboxes archived into their MailStore account. You should purchase a license size that matches the number of people in your organization who send and receive email.
Please note that MailStore licenses specifically exclude the use of MailStore to provide commercial email archiving services.