Personalization
Making a message specific to its recipient. In 2026 the word covers two opposite things: merge-variable insertion (template personalization) and research-based writing (actual personalization).
The test is substitution: if the sentence works with any name swapped in, it isn't personalized — it's addressed. 'Loved your post' fails; 'your margin-teardown number on returns surprised me — asking because you'd know' passes. Real personalization requires reading the profile and recent activity before writing, which was economically impossible at volume until agents made reading cheap.
LinkedBoost is the LinkedIn MCP for Claude — agent-run outreach with enforced limits and a human trigger on every send. See how it works →