Kit is a Creator email platform founded in 2013, headquartered in the United States. Starting at $39/mo, it targets Newsletter creators monetising an audience. Our verdict: Free to 10,000 subscribers with unlimited broadcasts. Watch for: The only platform in our panel with no measurable inbox placement. Rated 7.0/10 overall across ease of use, deliverability, and pricing value.
Kit is an email platform for online creators, and the one-word name is recent. It was ConvertKit until the rebrand was announced on 6 June 2024 and went live on 1 October, with convertkit.com still forwarding today. The company ran that rebrand in public because it had tried once before, in 2018, under the name Seva, and reversed it within a month.
Nathan Barry started it in January 2013 as a public experiment: a self-imposed challenge to reach $5,000 a month in recurring revenue in six months, with the numbers published as he went. It has taken no outside funding and reported revenue above $50 million for the year to mid-2026.
The Creator Network is the part competitors cannot copy cheaply. Creators recommend each other inside sign-up flows, and paid recommendation slots run through SparkLoop, which Kit has since acquired. Commerce carries a flat 3.5 percent plus 30 cents per transaction rather than a share of subscription revenue, and the free plan runs to 10,000 subscribers before a paid plan starts at $33 a month.
There is no SMTP relay. Kit sends through its own broadcasts and a REST API, and a dedicated IP costs $250 a month with a floor of 150,000 messages a week.
Our full editorial review covers pricing, deliverability, ease of use, support quality, and API/MCP maturity. Read the Kit review →
All pricing tiers, hidden fees, refund policy, and the true cost per email are broken down in the pricing tab. See Kit pricing →
Kit compared with its closest competitors by use case, pricing, and switching cost. See alternatives →
Hostnames, ports, authentication, rate limits, and DKIM/SPF configuration for Kit. See SMTP settings →
Our API tab covers Kit's REST API version, SDKs, rate limits, and MCP server support (official, community, and commercial wrappers). See API + MCP →
This review follows our email infrastructure testing methodology. We disclose affiliate relationships in our editorial independence policy.