Serif vs Zavu Inbox
Serif
serif.aiZavu Inbox
zavu.devSide by side
| Figure | Serif | Zavu Inbox |
|---|---|---|
| Price from | $30/mo | $20/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| iOS | Yes | — |
| API | — | Yes |
| Plans published | 6 | 5 |
| Spec score · Shared Inbox Software | 8.9 (#7) | 7.6 (#24) |
| Company | The About page identifies founders Kevin Yang and James and says they met during their first week at Stanford. | The privacy policy identifies the legal entity as Zavu Labs Inc., incorporated in Delaware, United States, and gives a Dover, Delaware business address. |
| Product | Serif places an AI employee in shared addresses such as info@, support@, and billing@ to answer routine email. | Zavu describes itself as a unified messaging API for sending and receiving communications across channels. |
Plans
Serif
- Lite$30 a month
- Standard$50 a month
- Pro$200 a month
- Team$50 a month
- EnterprisePriced on request
- FreeFree
Zavu Inbox
- Free PlanFree
- Pro$20 a month
- Managed$1,250 a month
- Build$2,450, paid once
- EnterprisePriced on request
In their own words
Serif
Serif places an AI employee in shared email addresses such as info@, support@ and billing@ to handle routine messages. It connects to Google Workspace or Microsoft 365, or can work with an address of its own. The assistant can qualify and route inquiries, answer common questions, collect paperwork, send quotes and follow up on unpaid invoices. Ambiguous or sensitive messages are escalated to the team, and users can approve replies before allowing independent operation. The shared inbox page offers $100 in free credits without a credit card, and each plan includes a 7-day free trial with full access. Listed plans include Lite at $30 a month, Standard at $50 a month, Pro at $200 a month, and Team at $50 a month per user; each is billed monthly. Serif says it is SOC 2 Type 2, GDPR and HIPAA compliant, and that emails are neither used to train general AI models nor stored on its servers. Apps are listed for web, macOS, Windows and iOS; Android is coming soon.