Public letters are always free. Need to ensure every signature is genuine? Choose invitation-only.
AI can generate thousands of fake signatures. Invitation-only letters ensure every signer is a real person, invited by someone you trust.
Every signature comes from a person who was personally invited. No drive-by signing, no manipulation.
100 verified, invited signers carry more weight than 10,000 anonymous ones. Decision-makers take invitation-only letters more seriously.
See who invited whom. Each signer can invite others, creating a transparent chain of trust that strengthens your letter.