As of October 8, 2026, Campaign Monitor is used by 11,348 websites in the TechLeads index: 0.26% of all Marketing automation detections, the 40th most-used of 506 Marketing automation technologies.
Quoting these numbers? Credit TechLeads with a link to this page.
Citation
TechLeads. "Campaign Monitor Customers and Market Share." Data as of October 8, 2026. https://techleads.fyi/technology/campaign-monitor/market-shareHTML link
<a href="https://techleads.fyi/technology/campaign-monitor/market-share">Campaign Monitor market share (TechLeads data)</a>Websites using each technology in the TechLeads index, and its share of all Marketing automation detections.
| # | Technology | Websites | Share |
|---|---|---|---|
| 1 | MailChimp | 820,056 | 18.6% |
| 2 | HubSpot | 724,804 | 16.4% |
| 3 | Klaviyo | 378,341 | 8.6% |
| 4 | Social Miner | 229,316 | 5.2% |
| 5 | MailChimp for WordPress | 225,834 | 5.1% |
| 6 | Sendinblue | 190,288 | 4.3% |
| 7 | HighLevel |
In HTTP Archive's monthly crawl of public websites, Campaign Monitor was detected on 16,758 pages in September 2026, down 15.9% from a year earlier (peak: 25,857). 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.
Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.
See all 11,348 websites using Campaign Monitor or download the full list as a CSV for $29.
TechLeads scans public websites and detects Campaign Monitor from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Campaign Monitor'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 8, 2026 and update daily.
| 157,057 |
| 3.6% |
| 8 | ActiveCampaign | 131,218 | 3.0% |
| 9 | OneSignal | 128,905 | 2.9% |
| 10 | Salesforce Marketing Cloud Account Engagement | 124,300 | 2.8% |
| 11 | Hubspot Forms | 111,877 | 2.5% |
| 12 | MailerLite | 88,964 | 2.0% |
| 13 | Adobe Analytics | 85,355 | 1.9% |
| 14 | Tidio | 70,238 | 1.6% |
| 15 | PushOwl | 61,343 | 1.4% |
| 16 | Omnisend | 56,345 | 1.3% |
| 17 | Constant Contact | 49,102 | 1.1% |
| 18 | RD Station | 41,811 | 0.95% |
| 19 | Mailmunch | 25,567 | 0.58% |
| 20 | Cloud Technologies | 24,786 | 0.56% |
| 21 | Campaign Monitor | 11,348 | 0.26% |
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.