# What does heidi use? heidi (heidi.com) shows public evidence of 18 tools, according to runsonwhat (last checked 2026-10-10). - Industry: Clothing - Size: 11–50 employees - Based in: Bristol, Switzerland - Founded: 2002 - LinkedIn: https://www.linkedin.com/company/heidi-holidays ## Edge & Hosting | Tool | Category | Evidence | Since | |---|---|---|---| | [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Email records | | | [Vercel](https://www.runsonwhat.com/reverse/vercel) | Hosting & Cloud | Custom domain, DNS verification records, DNS records, Website code | | ## Application | Tool | Category | Evidence | Since | |---|---|---|---| | [Anthropic](https://www.runsonwhat.com/reverse/anthropic) | AI | DNS verification records | | ## Go-to-market | Tool | Category | Evidence | Since | |---|---|---|---| | [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records | | | [Zendesk](https://www.runsonwhat.com/reverse/zendesk) | Support & Docs | Custom domain, Email records | | | [Campaign Monitor](https://www.runsonwhat.com/reverse/campaign-monitor) | Marketing | Email records | | | [Framer](https://www.runsonwhat.com/reverse/framer) | Website & CMS | Custom domain | | | [Customer.io](https://www.runsonwhat.com/reverse/customerio) | Marketing | Custom domain | | ## Company Ops | Tool | Category | Evidence | Since | |---|---|---|---| | [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records | | | [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | DNS verification records, Email records | | | [SendGrid](https://www.runsonwhat.com/reverse/sendgrid) | Email Delivery | Email records | | | [Apple Business](https://www.runsonwhat.com/reverse/apple) | Workspace | DNS verification records | | | [Mailjet](https://www.runsonwhat.com/reverse/mailjet) | Email Delivery | Email records | | | [Sophos](https://www.runsonwhat.com/reverse/sophos) | Security & Compliance | DNS verification records | | | [Bitwarden](https://www.runsonwhat.com/reverse/bitwarden) | Security & Compliance | DNS verification records | | | [Notion](https://www.runsonwhat.com/reverse/notion) | Collaboration | DNS verification records | | | [Zapier](https://www.runsonwhat.com/reverse/zapier) | Dev Tools | DNS verification records | | ## Recent changes at heidi - 2026-10-10: started using [Notion](https://www.runsonwhat.com/reverse/notion) ## FAQ ### What tools does heidi use? As of October 2026, runsonwhat has found 18 tools at heidi (heidi.com) in public records. Edge & Hosting: Cloudflare and Vercel. Application: Anthropic. Go-to-market: Meta Pixel, Zendesk and Campaign Monitor. Company Ops: Microsoft 365, Google Workspace and SendGrid. Last checked October 10, 2026. ### What cloud does heidi run on? heidi uses Vercel for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Vercel through a subdomain that points at Vercel and a DNS verification record. Vercel is used by 46,967 companies runsonwhat tracks. ### What email provider does heidi use? heidi uses Microsoft 365 for email and office software, alongside Google Workspace and Apple Business, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365. Microsoft 365 is used by 704,831 companies runsonwhat tracks. ### What does heidi use for customer support? heidi uses Zendesk for customer support and documentation, according to runsonwhat (October 2026). runsonwhat found Zendesk through a subdomain that points at Zendesk and email records. Zendesk is used by 41,135 companies runsonwhat tracks. ### What is heidi's website built with? heidi uses Framer for its website, according to runsonwhat (October 2026). runsonwhat found Framer through a subdomain that points at Framer. Framer is used by 5,938 companies runsonwhat tracks. ### What marketing software does heidi use? heidi uses Campaign Monitor for marketing, alongside Customer.io, according to runsonwhat (October 2026). runsonwhat found Campaign Monitor through email records that authorize Campaign Monitor. Campaign Monitor is used by 8,522 companies runsonwhat tracks. ### Does heidi use Cloudflare? Yes. runsonwhat found Cloudflare at heidi through DNS records that point at Cloudflare and email records. Cloudflare is a CDN & Edge tool used by 694,593 companies runsonwhat tracks. ### Does heidi use AI tools? Yes. runsonwhat has found Anthropic at heidi; Anthropic, for example, through a DNS verification record for Anthropic. AI services called only from servers leave no public trace, so heidi may use more AI tools than these. ### Has heidi changed tools recently? Yes. On runsonwhat's rechecks, heidi started using Notion (latest on October 10, 2026). A change counts only between two checks of heidi.com done the same way. ### Which companies have a tech stack similar to heidi's? The companies with the stacks most like heidi's are Pirros, Stacksync, Extern and Upfort, according to runsonwhat (October 2026). Each shares 7 to 11 tools with heidi, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices. ### How does runsonwhat know what heidi uses? runsonwhat reads public records only. Of the 18 tools at heidi, 11 were found through DNS records, 4 through subdomains that point at the vendor and 3 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and heidi.com about monthly. --- Source: runsonwhat, https://www.runsonwhat.com/company/heidi.com (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.