Zoho Email Client (2024)

| Feature | Zoho Mail | Gmail (Free) | Outlook.com | | :--- | :--- | :--- | :--- | | TLS 1.3 | Yes | Yes | Yes | | End-to-End Encryption (E2EE) | Via S/MIME or Zoho's native E2EE | Via 3rd-party (Virtru) | Via Microsoft 365 E3+ | | Bring Your Own Key (BYOK) | Yes (Enterprise) | No | Yes (Azure Key Vault) | | Data Residency | Yes (US, EU, India, Australia) | Yes (limited regions) | Yes |

Limitation: Search on free tier is limited to 3 months; paid tiers offer unlimited historical search. zoho email client