Letter validity
1 month to 5 years
Chosen by the writer at submission. Default: 1 year. The Valid until date cannot be extended afterward.
Letter validity
Validity and access are separate.
A letter can expire while a recipient still has access to its delivered copy.
Reading access
12 months
Starts when each copy is delivered. Access continues after expiry unless the writer withdraws the letter.
Writer controlled
Withdrawal
The writer can withdraw a letter. Every recipient then loses access to its copy.
Validity choices
1 month · 3 months · 6 months · 1 year · 2 years · 3 years · 5 years
Each recipient decides whether a letter meets its requirements.