In other words, it needs to be very obvious to the reader that there is a reason to read further. If it isn't obvious, there is almost no chance for consideration. Private employment agencies recruit job candidates for employers on a contingency basis. Since the company incurs no cost to place the job order, it is usually given to several agencies to broaden the search effort. An agency may be a general recruiter or specialize in a particular occupation or industry.
Agencies seek to establish a volume level of business.
There is considerable variation in the professionalism of employment agencies. Unlike executive search firms, a job seeker may visit any employment agency without an appointment, fill out an information card and be screened by a placement counselor. Many will routinely send your resume to companies without your knowledge. Have the agency clarify its policy in this regard. If this is a suitable marketing channel for you, contact as many agencies as possible for maximum exposure.