| Price from | Free | $1.08/mo |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 1 | 15 |
| Spec score · CRM Software | 8.1 (#103) | 9.3 (#11) |
| AI features | Yes | Yes |
| Founded | 2025 | 2009 |
| Free plan | Yes | No |
| Free trial | Yes | Yes |
| Headquarters | The Terms page lists Sunnyvale, California and Hyderabad, India as company locations. | Ann Arbor, Michigan, United States |
| Integrations | The site names Gmail, SMTP, SendGrid, Amazon SES, WhatsApp, Twilio, ElevenLabs, Google Calendar, Google Sheets, LinkedIn, and IMAP. | Nutshell says it connects with more than 5,000 applications through native, marketplace, Zapier and open-API options. |
| Marketing automation | Yes | Yes |
| Visual sales pipeline | Yes | Yes |
| Security | The site says data is encrypted in transit and at rest, API keys use AES-256 encryption, sessions use JWT, and the service is GDPR-compliant; SSO and audit logs are listed for Enterprise. | Customer data is stored on Amazon Web Services, encrypted at rest and accessed through 256-bit TLS 1.2; billing data is handled by a PCI-compliant provider. |
| Support | CRM.io says sales, demo, migration, and security questions receive a human response within one business day, with most replies within four hours during weekday business hours. | Every plan includes free live support, trial data migration assistance and onboarding. |
