As per this message 5e spell you actually point your finger towards a creature within a specific range and of course you whisper a message too. Basically, the target (and the target only) would hear the message dnd 5e and has acapability to reply in a whisper which only you could hear.
Through the solid objects you can easily cast this message spell 5e but if you’re familiar by the target and know about it like it is beyond the barrier. The magical silence, 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood actually blocks the spell. Normally, the d&d message spell need not to follow a straight line and also can travel freely around the corners or through the openings.
Attributes Of DnD 5E Message
|Casting Time||1 action|
|Classes||Bard, Sorcerer, Wizard|
|Components||V S M|
|Material||A short piece of copper wire|
|Target||A creature within range|