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Yes, mailing a letter to a former boss is usually a good move when you left on decent terms: it keeps the relationship warm, keeps you in mind for references, and stands out because almost nobody writes paper letters anymore. Keep it short, forward-looking, and free of old grievances.
Former bosses get LinkedIn messages and holiday emails by the dozen. A paper letter arrives in a different pile, gets opened by hand, and gets remembered. It also signals effort: you sat down, wrote something, and paid to send it. That effort reads as respect, which is exactly the impression you want a former boss to hold of you.
There is a practical payoff too. References and introductions flow to people who stay visible. A boss who has heard from you recently will speak about you more warmly than one who has to dig up a memory from three years ago. The letter keeps your name current without asking for anything.
Three things, in this order. First, one genuine thank-you tied to something specific: a skill they taught you, a chance they gave you, a hard conversation they handled well. Second, a short update on where you are now, so they can picture your trajectory. Third, a forward-looking line: you would value staying in touch, and you would welcome their advice as your career develops.
Keep it to one page. Former bosses are busy, and a long letter about your career will be skimmed. The best sentence is usually the specific thank-you; put it early, not at the end.
| Include | Why |
|---|---|
| One specific thank-you | Shows you remember real moments, not just the job title |
| A short career update | Lets them place you and speak about you accurately |
| Your current contact details | Makes a reply or a referral easy |
| A forward-looking line | Keeps the door open without asking for anything now |
| An offer to help in return | Turns a one-way note into a real relationship |
Old grievances, full stop. Do not rehash the promotion you missed, the manager who clashed with you, or the workload that burned you out. Even a mild version ("those last months were tough") drags the letter backward and makes the boss wonder why you wrote at all. If the departure was genuinely bad, a letter may not be the right move; a short, neutral email is safer.
Also leave out requests. Do not ask for a reference, an introduction, or a job lead in the same letter as the thank-you. It converts gratitude into a transaction, and bosses notice. Send the thank-you, wait, and make any request separately, in its own message, weeks later.
Good triggers: a new role, a promotion, an anniversary of your departure, a holiday, or the news that your former boss changed roles themselves. Writing when they change jobs is a smart move: they are thinking about their own network at that moment, and your letter arrives while they are receptive.
If you left recently, wait a month or two. A thank-you sent the week after departure can read as part of the exit. The same letter sent after you have settled elsewhere reads as genuine reflection.
If they are still at the same company, mail it to their work address with their name and title. If they have moved on, a home address is better, but only if you already have it from a legitimate source; do not hunt down a private address for this. LinkedIn can help you confirm where they work now, but do not mail a personal letter to a company mailroom without a name and department on it.
Yes, for former bosses in the United States or Canada. Describe the letter to your AI assistant, approve the exact quoted price, and it is printed and mailed in a double-window envelope. Because this letter is about a professional relationship, double-check the spelling of their name and title before sending; a misspelled name on a letter meant to impress does real damage.
Ready to mail it? Send your letter with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is printed and mailed.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
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