Is Dear Recruitment Manager professional?

Yes, but it reads formal and generic. A named recruiter or hiring manager is stronger.

Recruitment manager vs hiring manager — who do I address?

Address the hiring manager when selling your fit; address the recruiter when following up on process.

"Dear Recruitment Manager" — Correct, but Rarely the Best Choice

"Dear Recruitment Manager" is grammatically fine but uncommon — most U.S. postings expect a named recruiter, "Dear Hiring Manager," or "Dear Talent Team."

“Dear Recruitment Manager” is grammatically correct but uncommon in U.S. cover letters — most postings expect either a named contact or “Dear Hiring Manager.”

Example openings

Dear Recruitment Manager,

I am writing regarding the Financial Analyst position (Ref #4821).

Dear Recruitment Manager,

I applied through your portal yesterday for the Client Success role
and wanted to attach context on my SaaS background.

What to write instead

Best: the recruiter or hiring manager's actual name
Good: “Dear Talent Acquisition Team” at large employers with central recruiting
Fallback: “Dear Hiring Manager” when the decision-maker is unclear

Need the actual name instead of a generic salutation? Paste the job URL into DearHiringManager.io — find the hiring manager's name in about a minute, then open with “Dear [Name],” instead.