Yes it possible. You'll need the help of a bulk email sender if you want to send 100,000 emails per day. Such servers typically need to warm up the mailing list to be able to send such large volumes of emails. It is important to keep the email list clean of any old emails and remove any emails that have not opted-in to receive such emails. If you do not take such preventive steps, the email sender may get spam-listed and the emails will not get delivered to the inbox of the recipients.