A letter of intent for a job is a cover letter that summarizes an applicant's interest in the job and details any qualifications and experience, as noted by Best-Job-Interview.com. The letter of intent is submitted along with a resume.
The letter of intent can be used to showcase the skills of the applicant, make note of degrees and other credentials that make the candidate more suitable for the position and to describe any related work that might make the resume stand out from others. The applicant can also mention any awards that have been bestowed upon him or her, or provide information about civic or volunteer work that he or she has done in the past. Finally, it can also be used to communicate the applicant's availability for an interview.