I am in agreement with you that sending targeted emails to only a portion of the workforce could be viewed in a negative way especially if these employees learn that not everyone was sent the email. My recommendation is to instead put steps in place to encourage employees to self-identify. If this is a campaign to collect disability information, for example, you might consider utilizing the following resources that the OFCCP has created to assist organizations in educating their staff regarding the self-id process https://www.dol.gov/agencies/ofccp/compliance-assistance/self-id-forms-video. Having a video with captioning and/or a statement coming from leadership briefing explaining the reason the information is collected and that it will not be used in a negative way against the employee is powerful as well as stressing the value of having a diverse workplace.

You can use this OFCCP audit checklist to ensure you're doing what is required to maintain OFCCP's regulations including VEVRAA, Section 503, and EO 11246. Or request a demo to streamline your compliance and recruiting efforts.