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How to write a thank-you letter after an internship or trial period

Sending a thank-you letter after an internship or trial period is an excellent way to leave a positive impression and maintain your network. But how do you find the right tone?

Real scenario

Lea is finishing her internship at a small company. She wants to thank her supervisor and the team, but does not want to come across as too formal or too casual.

Why send a thank-you after an internship or trial period?

  • You show gratitude and professionalism.
  • You maintain good relationships for the future.
  • You may obtain a recommendation or a future opportunity.

Tips for success

  • Be sincere and specific about what you appreciated.
  • Mention a project or skill you gained.
  • Keep it brief and positive.

Email examples

Subject: Thank you for my internship at [company name]

Hello [supervisor's name],

I wanted to thank you for the welcome and support throughout my internship. I learned a great deal, especially about [project or skill], and I thoroughly enjoyed the team atmosphere.

Thank you again for this enriching experience.

Best regards,
[First name Last name]

Subject: Thanks for the great experience!

Hello [supervisor's name],

Thanks so much for this amazing internship at [company name]! I loved working with you and the team, and I learned so much.

I hope our paths cross again, and thanks again for everything!

[First name Last name]

Tips

Personalise your message by mentioning a specific project or skill.

FAQ: thank-you after an internship or trial period

When should I send the letter?

On your last day or within the week following the end of your internship or trial period.

Should I send an email or a written letter?

An email is sufficient, unless the company is very traditional.

Can I ask for a recommendation in this message?

Yes — briefly and subtly, at the end of the email.

Key takeaways

  • Be sincere and specific.
  • Mention what you learned or appreciated.
  • Use one of the templates above to save time!

Need other templates? Check out our articles on recommendations, follow-ups, or spontaneous applications.