Catch the problem before the letter is sent.
The same engine that helps a family read a notice helps the people who write them. Sender mode turns Holdline into a pre-flight check for schools and agencies.
Check a prior written notice before it goes home
Sender mode lists every required part of 34 CFR 300.503(b) that a draft is missing, flags citations that don't exist, and scores reading level against plain-language guidance.
Fix a notice before a court has to
Check Medicaid and SNAP adverse-action notices against 42 CFR 431.210 and 7 CFR 273.13 before they're mailed. These are the content rules courts enforce.
Triage a stack of letters in minutes
Every check produces a printable evidence packet: deadline with the math, each required part with the law's words and the letter's words, and a ready reply.
Why it is safe to deploy
- Open models, your key. Runs on NVIDIA Nemotron through Nebius Token Factory. No closed-model API sees a student or beneficiary record.
- Nothing stored. Letters are processed in memory and never saved.
- Open source, MIT. Self-host it with a Dockerfile, add your state's rules as a new rule pack.
- Auditable. Every result has a run log: which model ran, what it cost, which sources were used, what was blocked.
Add a rule pack
A rule pack is a short file: the regulation's required parts quoted word for word, the deadline rule, and the reply template. A build check verifies every quote against the live eCFR text.
See what your notices look like to a family.
Paste a draft into sender mode. Nothing is stored.