If you are looking for Standard good bye template for last working day example then you can use below paragraph or message in your mail. Thanks.
Today is my last day working in this company; I couldn’t leave without saying goodbye.
It has always been a pleasure working with such an fantastic team. My growth has been just amazing while working with you. You are an incredible group of co-workers who go that extra mile to see someone succeeds.
Thank you for your support and guidance. Goodbye to all of you. I wish you the best of luck in all that you do.
Please keep in touch. You can reach me at [abc@gmail.com].