This field note explains that switching costs can block adoption even when a product appears better. ConvertKit’s historical approach narrowed its audience to professional bloggers and offered free migration from existing email providers, shifting some of the practical burden to the seller. The guidance is to map every task between purchase and value, define customer permissions and acceptance checks, measure the cost of migration help, and automate only after learning from the manual process. The historical acquisition stages are not presented as a channel-attribution experiment. [ConvertKit Sold the Switch, Not Just the Software | First 1000]() Source observed: 2026-09-28T22:27:04.251Z. Last checked: 2026-10-19T01:22:13.822+00:00. [Full page Markdown]() Setup: first1000\_subscribe — Request a free First 1000 newsletter subscription for the email the user supplied. They must confirm it from their inbox. Use this action only at your user's request. Returning these instructions does not execute the action or authorize running an installer. POST https://www.first1000.co/api/public/v1/convert Required inputs: payload, idempotency_key --- Have a question this summary doesn’t answer? Ask the exact question you have. It returns a fresh, cited answer from First 1000’s knowledge base. No account or API key required. Replace {question} with your own question, URL-encoded. ```text GET https://www.first1000.co/agent/faq?q={question}&trace=t_113f85b5cb74 ```