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How to Email an Old Colleague After Years Apart

By Shawn Gregoire, founder of Capstone Outreach · Updated October 2026

To reconnect with an ex colleague, send a short email that names a shared memory or something you noticed about their work. Say in one line why you're writing now. Ask for nothing, or for something small. The key: make it easy to reply. Note the gap without a long apology. Keep it under 120 words, and end with a light question they can answer in a minute.

Old colleagues are some of the warmest contacts you have. They saw how you work and remember the hard projects. They usually wish you well. But silence makes people hold back. The first email after years apart decides if the bond restarts or stays a name in your contacts.

What makes it land is detail. A real fact from your shared past or their recent work proves you're writing to them, not to a list. Add a clear, honest reason for writing now and an easy question. Most people will be glad you wrote.

On this page
  1. 10 examples to copy
  2. When to send it
  3. Subject lines
  4. What to avoid
  5. After you send it
  6. Frequently asked questions
  7. Related messages

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10 examples to copy

One message is easy. Hundreds of people, all year, is the hard part. Capstone Outreach puts everyone you know on a rhythm you pick, from weekly to every three months. When someone is due, a message like these is already written in your voice from your history with them. You approve it, and it goes from your own email or phone. See how it works.

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Everyone on a rhythm. Who is due, and when. Recorded in the app on a demo account.

1. After years of silence, no ask

Subject: A memory from our [Company] days

Hi [Name], I was [specific detail, e.g. walking past our old office on Fifth Street] last week and thought of you and the [project] crunch we somehow survived. It's been far too long. No agenda here. I just realized we hadn't talked in years and wanted to say hello. I'm now [your role] at [Your Company], and things are good. What are you up to these days? I'd genuinely love to hear. Best, [Your Name]

Why it works: A real shared memory and a clear note that there's no ask lower their guard. That makes it easy to reply.

2. They just got promoted or started a new role

Subject: Congrats on the new role, [Name]

Hi [Name], I saw you just took on [new title] at [Company]. Congratulations. That's a great fit, and honestly not a surprise to anyone who watched you run [specific detail, e.g. the client onboarding overhaul] back at [Old Company]. I know we haven't talked in a few years, but I wanted you to know I'm cheering you on. What are you most excited to dig into first? Warmly, [Your Name]

Why it works: Congrats give you a natural reason to write. Tying them to work you saw firsthand makes the praise easy to believe.

3. Responding to something they posted or published

Subject: Your piece on [topic]

Hi [Name], I read your post about [topic] and it stuck with me, especially the point about [specific detail]. It reminded me of the debates we used to have in [team or meeting] at [Company]. It's been years since we talked, and I didn't want to just hit like and scroll past. I've been seeing the same thing in my work at [Your Company]. Are you writing more on this? I'd read it. Best, [Your Name]

Why it works: Responding to one idea they shared shows real interest. It also gives them an easy, pleasant topic to reply about.

4. A mutual former colleague mentioned them

Subject: [Mutual Name] says hello (and so do I)

Hi [Name], I had coffee with [Mutual Name] last week and your name came up. We spent a good ten minutes remembering [specific detail, e.g. your legendary Friday demo days]. It made me realize how long it's been since you and I talked. I'm at [Your Company] now, doing [short description]. How are things on your end? Are you still at [Company]? Cheers, [Your Name]

Why it works: A shared friend makes the timing feel natural. It also reminds them of a circle they already trust.

5. Thanking them for help early in your career

Subject: Something I never properly thanked you for

Hi [Name], This is overdue. When I was new at [Company], you [specific detail, e.g. sat with me for an hour before my first client pitch and rewrote my opening]. I still use what you taught me. I'm now [your role] at [Your Company], and I recently passed the same advice to someone on my team. It made me think of you, so I wanted to say thank you. Hope you're doing well. What are you working on lately? Gratefully, [Your Name]

Why it works: Real, specific thanks is one of the most welcome emails anyone can get. And it asks nothing of them.

6. You'll be in their city soon

Subject: In [City] on [dates], coffee?

Hi [Name], I'll be in [City] from [date] to [date] for [reason], and I realized you're there now. It's been years since we worked together on [specific detail], and I'd love to catch up in person. Any chance you're free for coffee or a quick lunch one of those days? I'm flexible and happy to come near your office. If the timing doesn't work, no worries at all. I'd still love to hear how you're doing. Best, [Your Name]

Why it works: A real visit gives a clear, timely reason to meet. The easy out keeps the pressure off.

7. Asking for a small piece of advice

Subject: Quick question for you, [Name]

Hi [Name], It's been a long time since our [Company] days, and I hope life has been good to you. I'm reaching out because you're the person I trust most on [topic]. I'm [short context, e.g. weighing whether to move our team to a new pricing model]. If you have ten minutes for a call, or even a few lines over email, I'd value your take. Either way, I'd love to hear what you've been up to. Thanks, [Your Name]

Why it works: People like being asked for their know-how. A small, clear request is easy to say yes to.

8. Sharing your new venture or career move

Subject: Some news, and thinking of you

Hi [Name], It's been a few years, so a quick update: I left [Old Company] and started [new venture or practice], focused on [one-line description]. A lot of what I'm doing traces back to what we built together on [specific detail]. I'm not writing to pitch you anything. You were part of that chapter, and I wanted you to hear it from me. How have you been? Still at [Company]? All the best, [Your Name]

Why it works: Sharing the news as a personal update, not a pitch, puts the bond first. It also makes them curious.

9. You have an opportunity that might interest them

Subject: Thought of you for something

Hi [Name], It's been years since we worked together at [Company], but I still remember how well you handled [specific detail]. That's why you came to mind this week. I'm helping fill a [role or opportunity] at [Company or client] that needs exactly that strength. It may not be right for you, and you may know someone better suited. Would you be open to a short call? Either way, I'd love to catch up. Best, [Your Name]

Why it works: Opening with a clear memory of their skill makes the offer feel personal, not like a mass email.

10. Owning that you let the connection slip

Subject: I owe you an email (a few years late)

Hi [Name], I'll admit it: I meant to stay in touch after I left [Company], and then years went by. That's on me. I was thinking about [specific detail, e.g. the late nights prepping the board deck] and realized I miss working with people like you. I'm now at [Your Company] doing [short description]. I'd love to hear what you've been up to. Want to grab a virtual coffee sometime in the next few weeks? Best, [Your Name]

Why it works: A brief, good-humored admission clears the awkward part in one line. Then it moves straight to warmth.

Sending these to more than a few people? See how people keep track of who to follow up with, and when: what a personal CRM does and the best personal CRMs, compared.

When to send it

Subject lines

What to avoid

After you send it

If you don't hear back in a week or two, send one short follow-up that adds something new. It could be an article they'd enjoy or a quick note about a shared contact. Then let it rest. Silence usually means busy, not unwelcome. Once they reply, suggest a call or coffee if it fits. After that, stay in touch every two to three months with something useful or personal. Send congrats, a helpful intro or a quick reaction to their work.

Building the habit: how to keep in touch with contacts and what a personal CRM does.

Reconnected. Now don't wait years again. Put your old colleague on a check-in every three months. When it is due, Capstone has a short note ready that picks up from your last talk.

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A study of 20 million LinkedIn members found that acquaintances, more than close friends, led to new jobs (Science, 2022). Capstone keeps those people warm. You approve every message, and it goes from your own email or phone.

Frequently asked questions

How do you start an email to an ex colleague after a long time?

Start with a real shared memory or a recent thing you noticed about their work. Here is one way to open. "I saw your new role at [Company] and thought of our late nights on the [project] launch" works well. This proves the email is personal. It gives them something real to respond to. Skip bland openers and long apologies for the gap.

Is it weird to email an old colleague out of the blue?

No, most people are pleased to hear from a former colleague, mainly when the message is warm and specific. It only feels weird when the email is vague or jumps straight to an ask. A clear reason for writing now makes it feel natural. That could be a promotion, a post or a shared contact.

Should I apologize for not keeping in touch?

A brief, light nod to the gap is fine, but don't dwell on it. One line like "I meant to stay in touch and then years went by" is plenty. Silence goes both ways. A long apology makes the email heavier than it needs to be. Move quickly to the memory or the reason you're writing.

Can I ask an old colleague for a favor in the first email?

You can if the ask is small, clearly optional and tied to their skills, like ten minutes of advice. Bigger asks include a referral, an intro or a donation. For those, reconnect first and have a real exchange. Then make the request in a later message so it doesn't feel like a trade.

What should the subject line be when reconnecting with an old colleague?

Use a subject line that is personal and easy to place. Try "A memory from our [Company] days" as one choice. "Congrats on the new role, [Name]" also works. Naming the shared company, a mutual contact or a real project helps them place you fast. It also keeps your email out of the ignore pile.

How long should a reconnecting email be?

Keep it between about 60 and 120 words. That's enough for a real memory, a one-line update about you, and a question for them. Longer emails feel like homework to answer. The goal of the first message is just to restart the talk. You don't need to cover everything since you last spoke.

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