Is it too late to send invitations 4 weeks before the wedding?

Four weeks is tight but workable for a small, local guest list. For larger or out-of-town lists it usually does not leave enough buffer.

• Local plus a small list: doable, especially with digital RSVPs to speed up replies.
• Out-of-town or large list: four weeks is cutting it close for travel and planning.
• The right window depends heavily on guest geography.
• If you are near the wire, prioritize fast response methods over formality.