# What does Postcrossing use?

Postcrossing (postcrossing.com) shows public evidence of 15 tools, according to runsonwhat (last checked 2026-10-20).

- Industry: Internet
- Size: 1–10 employees
- Based in: Porto, Portugal
- LinkedIn: https://www.linkedin.com/company/postcrossing

## Edge & Hosting

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Cloudflare](https://www.runsonwhat.com/reverse/cloudflare) | CDN & Edge | DNS records, Website code |  |
| [Amazon Web Services](https://www.runsonwhat.com/reverse/aws) | Hosting & Cloud | Custom domain |  |

## Data & Observability

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Plausible](https://www.runsonwhat.com/reverse/plausible) | Analytics | Website code |  |

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | Ads & Pixels | DNS verification records |  |
| [Shopify](https://www.runsonwhat.com/reverse/shopify) | Website & CMS | Custom domain |  |
| [Google Ad Manager](https://www.runsonwhat.com/reverse/google-ad-manager) | Ads & Pixels | Website config |  |
| [Brave Creators](https://www.runsonwhat.com/reverse/brave) | Marketing | DNS verification records |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | Email records |  |
| [Google Workspace](https://www.runsonwhat.com/reverse/google-workspace) | Workspace | Email records, Website code |  |
| [Let's Encrypt](https://www.runsonwhat.com/reverse/letsencrypt) | Security & Compliance | DNS records |  |
| [Sectigo](https://www.runsonwhat.com/reverse/sectigo) | Security & Compliance | DNS records |  |
| [DigiCert](https://www.runsonwhat.com/reverse/digicert) | Security & Compliance | DNS records |  |
| [Google Trust Services](https://www.runsonwhat.com/reverse/google-trust) | Security & Compliance | DNS records |  |
| [Amazon Trust Services](https://www.runsonwhat.com/reverse/amazon-trust) | Security & Compliance | DNS records |  |

## FAQ

### What tools does Postcrossing use?

As of October 2026, runsonwhat has found 15 tools at Postcrossing (postcrossing.com) in public records. Edge & Hosting: Cloudflare and Amazon Web Services. Data & Observability: Plausible. Go-to-market: Meta Pixel, Shopify and Google Ad Manager. Company Ops: Microsoft 365, Google Workspace and Let's Encrypt. Last checked October 20, 2026.

### What cloud does Postcrossing run on?

Postcrossing uses Amazon Web Services for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Amazon Web Services through a subdomain that points at Amazon Web Services. Amazon Web Services is used by 146,165 companies runsonwhat tracks.

### What email provider does Postcrossing use?

Postcrossing uses Microsoft 365 for email and office software, alongside Google Workspace, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through email records that authorize Microsoft 365. Microsoft 365 is used by 715,733 companies runsonwhat tracks.

### What analytics tools does Postcrossing use?

Postcrossing uses Plausible for analytics, according to runsonwhat (October 2026). runsonwhat found Plausible through Plausible code on postcrossing.com. Plausible is used by 7,223 companies runsonwhat tracks.

### What is Postcrossing's website built with?

Postcrossing uses Shopify for its website, according to runsonwhat (October 2026). runsonwhat found Shopify through a subdomain that points at Shopify. Shopify is used by 60,126 companies runsonwhat tracks.

### What marketing software does Postcrossing use?

Postcrossing uses Brave Creators for marketing, according to runsonwhat (October 2026). runsonwhat found Brave Creators through a DNS verification record for Brave Creators. Brave Creators is used by 850 companies runsonwhat tracks.

### Does Postcrossing use Cloudflare?

Yes. runsonwhat found Cloudflare at Postcrossing through DNS records that point at Cloudflare and code on postcrossing.com. Cloudflare is a CDN & Edge tool used by 711,918 companies runsonwhat tracks.

### Which companies have a tech stack similar to Postcrossing's?

The companies with the stacks most like Postcrossing's are Icoa, Hubly Technologies, Citiservi and Raqiim, according to runsonwhat (October 2026). Each shares 4 to 8 tools with Postcrossing, and rare tools count for more than common ones like Google Workspace, so the match reflects real stack choices.

### How does runsonwhat know what Postcrossing uses?

runsonwhat reads public records only. Of the 15 tools at Postcrossing, 9 were found through DNS records, 2 through email records, 2 through subdomains that point at the vendor, 1 through website configuration files and 1 through code on postcrossing.com. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and postcrossing.com about monthly.


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Source: runsonwhat, https://www.runsonwhat.com/company/postcrossing.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.