Guide
The allowed methods differ by state, and the case is usually lost on proof, not on wording.
Rules checked October 2026
Courts see two versions of the same story: the landlord’s “I served it on the 4th” and the tenant’s “I never got it.” The version with a record wins. Service has two halves — a method your state allows for that notice, and proof that survives the argument.
The allowed list for your state is printed on its deadline page beside the period, because the two belong together: a perfect period served by a forbidden method is still a defective notice.
The kit’s proof-of-service checklist (§5) is this page as a form: one sheet per notice, completed the day of service.
The paper that goes with the date
The checker gives you the date. The kit gives you the notices: pay or quit, non-renewal / termination, and rent increase letters generated from these same checked deadlines, a letter builder that fills in your dates and names, the move-in and move-out inspection checklists, and the proof-of-service checklist.
One-time payment. No subscription. The checker stays free either way.