Manager conversation
Copy, fill the brackets, send from your own mail. Nothing here leaves this device.
The room you are walking into
Lead with thanks, then the date. Do not over-explain the new role.
I wanted to tell you first. I have accepted another role. My decision is made. My last working day, if I serve full notice, is [LWD]. I will write a handover this week. I am grateful for the work here and I want to leave well.
This script fills its last working day from your saved resignation letter — make one first, then copy.
Templates, not legal advice. Match them to your appointment letter before you send.