The short answer is yes. Both Gmail and Outlook have support for bulk email marketing. However, Outlook is an email client that comes with a limit of 500 emails per day. The same limit applies to Gmail. There is also a problem related to several supported contacts. The contact list capacity on both Gmail and Outlook is not indefinite. Both currently support up to 25,000 contacts, but Outlook has slight performance issues once the contact list goes about 10,000 entries.