Inbox Zero
6.8#14 in ai email assistantsFrom $20 a monthAndroidiOSWebAPI
VisitInbox Zero vs Serif
What both publish
| Fact | Inbox Zero | Serif |
|---|---|---|
| Audience | The product is built for founders, operators, and professionals who receive more email than they can handle manually. | Serif describes its platform as automating email and document work for small businesses and operations teams. |
| Email providers | It supports Gmail, Google Workspace, and Microsoft Outlook email accounts. | Serif connects to Google Workspace or Microsoft 365 and can also use an address of its own. |
| Security | The hosted product is SOC 2 compliant, and the Trust Center identifies SOC 2 Type 2 compliance. | Serif states that it is SOC 2 Type 2, GDPR, and HIPAA compliant, and that emails are not used to train general AI models or stored on its servers. |
Inbox Zero plans
- Starter$20 a month
- Plus$35 a month
- Professional$50 a month
- EnterprisePriced on request
Serif plans
- Lite$30 a month
- Standard$50 a month
- Pro$200 a month
- Team$50 a month
- EnterprisePriced on request
- FreeFree
Pick Inbox Zero if…
You want what its maker publishes above — check its page for the details.
Pick Serif if…
Serif is aimed at small businesses and operations teams that want routine shared-inbox and document tasks automated. Its escalation and approval options may suit teams that want to review replies before allowing more independent handling.