What should be included in an Invitation Letter for a Thai Visa when staying with friends or family?

An Invitation Letter for obtaining a Thai Visa to stay with friends or family should include the following elements: a brief introduction stating the relationship between the inviter and the visa applicant, the complete address of the residence where the applicant will be staying, and the contact information of the inviter. It should be concise, confirming the intention of the stay, and must be signed by the inviter.