Representation of an enumeration depicting the direction of an email message in the Sudo Platform Email SDK.
Message is inbound to the user - message has been received by the user.
Message is outbound to the user - message has been sent by the user.
API Evolution - if this occurs, it may mean you need to update the library.
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.