Can I write to whom it may concern on a cover letter?
Never use “To Whom it May Concern” or “Dear or Sir or Madam”—nothing could be more generic (not to mention archaic). Your cover letter could be the first opportunity you have to make an impression on the hiring manager, so make sure you show that you did your company research.
How do you address a cover letter without a name?
To address a cover letter without a name, use some variation of, "Dear Software Team Hiring Manager." You can also use, "Dear Hiring Manager" if the addressee really is unknown. Remember that "To Whom It May Concern" is an old-fashioned salutation for cover letters. It also feels very impersonal.
Is it rude to say to whom it may concern?
“To whom it may concern” works well in cases where you don't know the name of your recipient(s) and want to come across as respectful, but in other contexts, it is not the most appropriate choice; and in some moments, it's not an appropriate choice at all.
Related Question cover letter to whom it may concern sample
Is To Whom It May Concern still acceptable?
"To Whom It May Concern" is an outdated, though still sometimes used, letter greeting, and there are now better options for starting a letter. When other options don't work for your correspondence, it's acceptable to start a letter with "To Whom It May Concern."