getMessagesMessageid: EndpointGeneric<{
    messageId: number;
}, {
    body: string;
    created: string;
    id: number;
    isRead: boolean;
    isReportAbuseDisplayed: boolean;
    isSystemMessage: boolean;
    recipient: {
        displayName: string;
        hasVerifiedBadge: boolean;
        id: number;
        name: string;
    };
    sender: {
        displayName: string;
        hasVerifiedBadge: boolean;
        id: number;
        name: string;
    };
    subject: string;
    updated: string;
}, any> = ...

GET https://privatemessages.roblox.com/v1/messages/:messageId

Gets a message's details.