IMHO  a worker should not be using his/her account to send out mass mailings. If nothing else it will damage the reputation of the company and risk labelling it as a spammer. Possible solutions may include setting up distribution lists with less than 100 recipients, or using the Pegasus Mail Mailmerge utility, see Pegasus Mail help under topic "Mail merge"  Mail Merge can be found when composing a message under the "Merge" tab.

Be aware that some ISPs will limit the number of mail messages that may be sent in a period of time.

HTH

Martin 

I have a coworker who emailed all 900 some emails from Pegasus to Outlook and jammed up the mail server. How do I stop this? He is reaching his max emails everyday and cannot send any new email.