The IT support cover letter that gets read
First, the honest answer to the question everyone actually has: most of the time, nobody reads your cover letter. I screened hundreds of applicants for my desk and I can count the ones I read fully. But here's the part people miss: I read every one that looked like it might not be garbage, and on the rare occasions a letter was good, that candidate went to the top of the call pile before their resume was even that impressive.
So the value isn't the letter. It's the tiebreak. When I have 40 okay resumes and one of them came with a letter that said something real, the phone call order changes. Write one when you want the tiebreak.
Write one for these jobs, skip it for those
Write the letter when the posting asks for one, when you're changing careers into IT and the resume doesn't explain itself, or when you know something specific about the employer (the industry, the size of the environment, someone who works there). Skip it for high-volume contract postings and staffing agencies; they're matching keywords, not reading prose. Never skip it because writing it feels hard, that's the same reason everyone else skips it, which is exactly why it works.
What I wanted to see in the first paragraph
Three sentences, this job, this company. Not "I am writing to express my interest in the position of," which is where my eyes used to glaze. Something more like: "I've spent two years as the only IT person at a 200-user logistics company, which means I've been the entire escalation path, from password resets at 7 a.m. to the failed switch that took the warehouse down at 4:55. Your posting mentions the Teams migration. I ran our Skype-to-Teams cutover for the same kind of users: drivers, dispatchers, people who only notice IT when it's gone."
That took twenty minutes to write and it beats every template on the internet, because it could only have been written by the person applying.
The middle: two proof points, not a resume retelling
The body is two short paragraphs. Each one takes a requirement from the posting and tells one true story that proves you've done something like it, with a number and a tool in it. "Ticket volume" stories, "rollout" stories, "angry user saved" stories. If the posting says Windows 11 migration experience, and you've imaged machines for anything, say so with the count. You are not retelling your resume. You're answering the question the resume leaves open: is this person as real as the paper says?
The ending: simple and human
No "thank you for your consideration," no "I look forward to hearing from you." One line on why you'd actually be good at this specific job, one line inviting contact. "I'd be glad to talk about what your first 90 days look like. I'm at 555-0100 or [email protected]." Done. Under a page total. If your letter is over 300 words, cut it.
The two things that killed letters on my desk: the first is the template smell, any sentence that could appear in a letter to a different company without editing. The second is apologizing, "although I don't have direct experience," "while my background is not traditional." State what you've done, let them weigh it. Self-deprecation in a cover letter is donating the tiebreak to somebody else.
Career changers: the letter is your best weapon
If your resume says warehouse supervisor and you're applying to a helpdesk, the resume looks like a mismatch for about six seconds. The letter is where you reframe it in one paragraph: "I was the person the whole warehouse called when the scanners or the shipping stations went down, which turned into an unofficial second job; I've since gotten the A+ and rebuilt our shared PC setup on my own time." Now the resume reads differently. Most hiring managers will take a proven problem-solver with a cert over a bored veteran with neither hunger nor documentation habits. I did, repeatedly, and it rarely disappointed me.
Send it as the body of the email, or as a PDF?
Both, if the system allows: full text in the email body (because some screens happen on a phone), PDF attached with a filename like lastname-cover-letter.pdf. Never as a .docx, never inside a zip, never as a link to a doc-sharing service. Every extra click loses a percentage of readers, and some applicant tracking systems genuinely mangle attachments. Make being read easy.