Security vendors and IT providers
Write something useful, not something frightening
Scare letters get deleted. A short note with one useful thing in it gets read.

Use what you know
Start from a list with real notes on each company. The notes hold those facts and the writer stays inside them, so a letter never claims to have tested anything of theirs.

Keep the claims clean
Add a boundary such as: never suggest they have been breached, never name a vulnerability. Then the check enforces it on every letter, not only the first few you read.

Honour no at once
An unsubscribe link is in every letter. A no moves that person out of the sequence and suppresses the address, across every campaign in the account.

Your checklist
- Choose one concern.
- Write your boundaries.
- Offer something useful, not a scare.
- Check suppressions before importing old lists.
Screens show a fictional workspace with example data.