As of October 27, 2026, ConvertKit is used by 21,808 websites in the TechLeads index: 0.47% of all Marketing automation detections, the 25th most-used of 542 Marketing automation technologies.
21,808
websites using ConvertKit
0.47%
share of Marketing automation
#25
of 542 in Marketing automation
ConvertKit vs competitors in Marketing automation
Websites using each technology in the TechLeads index, and its share of all Marketing automation detections.
Rows link to each competitor's market share page where one exists. The table lists the 21 most-used technologies; ranks are by website count.
ConvertKit usage over time
In HTTP Archive's monthly crawl of public websites, ConvertKit was detected on 15,614 pages in September 2026, down 61.2% from a year earlier (peak: 41,787). HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.
Same month, other Email technologies in HTTP Archive: Google Workspace 7,328,416, Microsoft 365 6,889,878, MailChimp 1,572,197, Sendgrid 1,280,135, Amazon SES 1,270,273.
ConvertKit customers by country
Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.
TechLeads scans public websites and detects ConvertKit from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is ConvertKit's website count divided by the website counts of all Marketing automation technologies we track; a site using two Marketing automation tools counts for both. Counts were last refreshed on October 27, 2026 and update daily.
FAQ
Q01What is ConvertKit's market share?
ConvertKit accounts for 0.47% of Marketing automation detections in the TechLeads index (21,808 websites), which makes it the 25th most-used of 542 Marketing automation technologies we track.
Q02How many companies use ConvertKit?
TechLeads currently detects ConvertKit on 21,808 websites. HTTP Archive's monthly crawl, a separate dataset, detected it on 15,614 pages in September 2026.
Q03Who are ConvertKit's biggest competitors?
By number of websites, the largest Marketing automation technologies besides ConvertKit are MailChimp (835,867), HubSpot (747,900), Klaviyo (403,088), Social Miner (236,116), MailChimp for WordPress (232,257).
Q04Which companies use ConvertKit?
Websites using ConvertKit include recipetineats.com, fourhourworkweek.com, leitesculinaria.com, markmanson.net, kirbiecravings.com, fitfoodiefinds.com. The full list of 21,808 websites can be exported as a CSV for $29.
