A goodbye message to colleagues on last working day is the last piece of writing that still has your work email on it. It should thank people, name the date, and leave a way to stay in touch — without a speech, a grievance, or a novel.

Send it after your resignation letter is already in. This note is not notice. It is a clean close.

At KnowAnt, we treat a farewell the same way we treat a professional email: one purpose, short paragraphs, grammar checked. Draft here, then paste into Outlook, Gmail, Slack, or Teams.

Table of Contents

• What Is a Last Working Day Email?
• Who Should Receive It
• When and Where to Send It
• How to Write a Goodbye Message
• Last Working Day Email Format
• Subject Line Examples
• Copy-Ready Templates
• Slack or Teams Goodbye
• What to Leave Out
• Frequently Asked Questions
• Conclusion

What Is a Last Working Day Email?

A last working day email is a farewell (and usually a thank-you) sent to colleagues, managers, clients, or HR when you are leaving.

It typically includes:

• That today (or a named date) is your last day
• Gratitude for specific work or people, if you can name it
• Optional next-role line, if you are comfortable sharing
• Personal email or LinkedIn
• A short, warm close

Tone follows the room: formal for clients and leadership, warmer for the team that sat next to you.

Who Should Receive It

Split the audience. One blast to 400 people is rarely the same note you owe your manager.

1. Immediate team — the people you worked with daily.
2. Manager — often a separate, more specific thank-you.
3. Direct reports — if you led people, write them as a group or one-to-one.
4. Clients — only when you owned the relationship; name the colleague who will take over if you know.
5. Wider company — optional, short, no inside jokes.
6. HR — usually a brief courtesy, not a memoir.

If you already sent a personal thank-you note to a mentor, the all-hands mail can stay general.

When and Where to Send It

• When: morning of the last day, or late afternoon the day before. People need time to reply while your inbox still works.
• Email: default for clients and mixed seniority.
• Slack / Teams: fine for a close team if that is how you already talk. Keep it as short as a standup update.
• Do not attach the resignation letter. Do not argue policy in the farewell thread.

How to Write a Goodbye Message

1. Name the last day in sentence one.
2. Thank the group for something real (a launch, a hard quarter, patience while you learned the stack).
3. Skip the full CV of why you are leaving.
4. Offer contact details if you want them used.
5. Wish the team well. Sign your name and title once.

Keep it to three short paragraphs. Proof names and the personal email with KnowAnt’s grammar checker before you send — this is the last impression in that domain.

Last Working Day Email Format

• Subject: farewell + thank you or last day + your name
• Greeting: Dear team / Hi everyone / Dear [Name]
• Open: last day + company name
• Middle: gratitude
• Close: contact + good wishes
• Sign-off: Best / Warm regards + name + title

Subject Line Examples

• Farewell and thank you — last day at [Company]
• My last day at [Company]
• Thank you, [Team name]
• Signing off — [Your Name]
• Last day: handover complete, staying in touch
• A note of thanks before I go

Put “last day” near the front so it survives a phone preview.

Copy-Ready Templates

Replace brackets. Cut any line that is not true.

Team — simple

Subject: Thank you and goodbye

Dear team,

Today is my last day at [Company]. Thank you for the collaboration, the honest feedback, and the work we shipped together.

I learned a great deal here. I will miss this group. You can reach me at [personal email] or on LinkedIn at [URL].

Wishing you a strong rest of the year.

Warm regards,
[Name]
[Title]

Team — slightly warmer

Subject: Farewell and thank you

Hi everyone,

As I wrap up at [Company], I wanted to say thank you. The late fixes, the quiet help, and the jokes in the channel made the hard weeks possible.

I am heading to [optional next step]. Please keep in touch: [email] / [LinkedIn].

All the best,
[Name]

Retirement

Subject: A fond farewell

Dear colleagues,

As I retire from [Company], thank you for the years of partnership and patience. I will remember the people more than the projects.

I would like to stay in touch at [email]. I wish you and the organisation well.

Warm wishes,
[Name]

Internship

Subject: Thank you for the internship

Hi team,

My internship ends today. Thank you for treating the questions as worth answering and for letting me own real work.

I hope we stay connected: [email] | [LinkedIn].

Best,
[Name]

Informal (close team only)

Subject: Catch you later

Hey team,

Last day in the building. Thanks for the coffee runs, the unblocking, and making this place less corporate than the handbook.

Let’s not lose the thread — [email] / [LinkedIn].

Take care,
[Name]

Manager

Subject: Thank you — last day

Dear [Manager name],

Today is my last day at [Company]. Thank you for the guidance, the stretch assignments, and the straight talk when I needed it.

I am grateful I reported to you. Wishing you and the team continued success.

Best regards,
[Name]

Direct reports

Subject: Farewell — and thank you

Hi team,

As I leave [Company], thank you for the trust and the delivery. You made the job better than the title.

Keep the same standard. I am easy to find at [email].

Best wishes,
[Name]

Client

Subject: Farewell from [Name] at [Company]

Dear [Client name],

I am leaving [Company] as of [date]. Thank you for the partnership. [Colleague name] will be your point of contact going forward.

It has been a pleasure. I wish you and your team well.

Kind regards,
[Name]
[Title]

HR

Subject: Last working day — thank you

Dear HR team,

Today completes my tenure at [Company]. Thank you for the support through onboarding, [leave / transfers / visa — only if true], and exit steps.

I wish the organisation continued success.

Best,
[Name]

Company-wide (short)

Subject: Goodbye from [Name]

Dear colleagues,

Today is my last day at [Company]. Thank you for the opportunities and the people I got to work with.

You can reach me at [email]. All the best.

[Name]

Slack or Teams Goodbye

Keep it shorter than email. No subject-line theatre.

Last day with this team. Thank you for the unblocking and the humour. Personal email: [email]. LinkedIn: [URL]. See you around.

Do not paste the full company-wide letter into a 12-person channel.

What to Leave Out

• Complaints about pay, people, or “the real reason”
• Sarcasm that will screenshot badly
• A dump of every project you ever touched
• “I’ll miss you” to people you never met
• Typos in names

If the draft sounds bitter, rewrite it with KnowAnt’s paraphrasing tool toward gratitude, then put the facts back in.

Frequently Asked Questions

What should a goodbye message to colleagues on the last working day include?

Last day, thank you, optional next step, and a personal contact. Three short paragraphs are enough.

When should I send a last working day email?

After resignation is official. Morning of the last day, or the afternoon before.

Should I send one email or several?

Several. Team, manager, and clients rarely need the same joke or the same level of detail.

Do I need to explain why I am leaving?

No. A clause is optional. A paragraph of justification is not required.

Can I send a goodbye on Slack instead of email?

For a tight team that lives in Slack, yes. Use email for clients and mixed seniority.

What is a good last-day subject line?

“Farewell and thank you — last day at [Company]” or “My last day at [Company].”

Conclusion

A goodbye message to colleagues on last working day is a short professional close: date, thanks, contact, done.

Write it like you mean it, keep it clean, and send it while people can still reply. Draft on KnowAnt, check the grammar, then leave the building with the last mail matching the work you actually did.