Hello Dhage, Endraja (CIB Tech, IND),
Thanks for reaching out. Please provide info on which unique message id your are referring to, Internet message id, id, etc? The id field does not support filtering. If you want to search the internet message id you can use the below filter example:
https://graph.microsoft.com/v1.0/me/messages?$filter=internetMessageId eq 'Message_Id_Including_Brackets'
If the reply is helpful, please click Accept Answer and kindly upvote it. If you have additional questions about this answer, please click Comment.
Thanks