Decline invitation email

Here is an example of a polite decline invitation email:

Subject: Declining Invitation to [Event/Meeting]

Dear [Host's Name],

I wanted to thank you for inviting me to [Event/Meeting] on [Date]. I appreciate the time and effort you put into organizing this event, and I'm grateful for the opportunity to have been considered.

Unfortunately, after careful consideration, I regret to inform you that I will not be able to attend. [Optional: You can provide a brief explanation for declining, e.g. "I have a prior commitment" or "I'm not feeling well"]

Please know that I appreciate your understanding, and I hope you have a great time at the event. If there's anything I can do to help or support you in the future, please don't hesitate to reach out.

Thank you again for the invitation, and I wish you all the best.

Best regards,

[Your Name]

This is a polite and professional way to decline an invitation, and it shows appreciation for the host's effort and consideration. You can customize it to fit your specific situation and tone.