# Attio vs Warmly: who uses which

On usedby, 20 companies use Attio and 30 use Warmly. No company is listed with both yet. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-08: 48 of 50 public lines checked.

## Side by side

|  | [Attio](https://www.usedby.ai/tools/attio.md) | [Warmly](https://www.usedby.ai/tools/warmly.md) |
|---|---|---|
| Public customers | 20 | 30 |
| Confirmed | 8 | 20 |
| Observed | 12 | 10 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | DevTools & Infrastructure (2), Investment & VC (2), Artificial Intelligence (1) | Artificial Intelligence (1), EdTech & E-learning (1), Marketing Tech (1) |
| Category | Sales Prospecting & Enrichment | Sales Prospecting & Enrichment |
| Security | ISO 27001 ([trust.attio.com](https://trust.attio.com/), checked 2026-10-04) | — |
| Data processing terms | A data processing agreement is available. ([attio.com](https://attio.com/legal/privacy), checked 2026-10-04) | — |
| Integrations | Typeform, Zapier, Slack, Aircall, Mailchimp, ChatGPT, Claude, Segment, Gmail, Outlook, Stripe, Zoom ([attio.com](https://attio.com/apps), checked 2026-10-04) | HubSpot, Salesforce, Slack, Microsoft Teams, Marketo, Zoho, Pipedrive, Outreach, SalesLoft, Apollo, 6sense, Demandbase ([warmly.ai](https://www.warmly.ai/p/product/intent-signals/integration), checked 2026-10-08) |
| Pricing | — | AI Web-Deanonymization: from $10,000 / year; Inbound Chat: from $20,000 / year; AI Inbound Autopilot: from $30,000 / year ([warmly.ai](https://www.warmly.ai/p/pricing), checked 2026-10-08) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Attio: [Passionfroot](https://www.usedby.ai/case-studies/passionfroot-attio.md): **25%**: “generating an extra 25% in GMV per month, thanks to Attio” (captured by usedby 2026-10-02)
- Attio: [Taskrabbit](https://www.usedby.ai/case-studies/taskrabbit-attio.md): **90%**: “90% team adoption overnight, up from sub 50%” (captured by usedby 2026-10-02)
- Warmly: [ScaleU](https://www.usedby.ai/case-studies/scaleu-warmly.md): **30 seconds**: “installed it on his Webflow site in about 30 seconds” (captured by usedby 2026-10-08)
- Warmly: [Behavioral Signals](https://www.usedby.ai/case-studies/behavioral-signals-warmly.md): **$40K**: “A $40K deal closed in just 7 days” (captured by usedby 2026-10-08)

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Source: https://www.usedby.ai/compare/attio-vs-warmly · How we check: https://www.usedby.ai/methodology