post
https://sandbox.datamotion.com/SecureMessagingApi/Message/GetInboxMessageIds
This method is used to retrieve the unique message identifiers (MIDs) of messages in a user's Inbox folder. A session key must be submitted via the X-Session-Key header. A successful transaction will receive a 200 status code.
400The InboxMessageIdsSearchOptionData model is required in the request body.
401The X-Session-Key header is missing. || Bad session key. || Session key expired. || FolderId [FolderId] is not an inbox folder. || FolderId [FolderId] not found. || MessageList filter [MessageListFilter] is not supported.