Lark vs Zimbra
On privacy it's Lark. On price it's Lark. On features it's Lark. Here's everything side by side, last checked 22 October 2026.
Should you pick Lark or Zimbra?
- Zimbra is the better pick if you want open-source apps.
| Feature | Lark | Zimbra |
|---|---|---|
| Overall | 2.0 | Not rated |
| Privacy | 0.5 | Not rated |
| Price | 3.0 | Not rated |
| Features | 4.5 | Not rated |
| Cheapest plan | Basic $6 a user a month, yearly | Open source Free |
| Free plan | Yes, Starter (up to 20 users) | Open-source edition; paid Network Edition |
| Storage | Not confirmed | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Singapore | United States |
| Your data is kept in | Not confirmed | Your own server |
| Founded | Unknown | Unknown |
| Free trial | Free Starter plan | Unknown |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Yes |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | Unknown | Unknown |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 22 October 2026 |
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Where they differ
- Lark's cheapest plan is Basic ($6 a user a month, yearly); Zimbra's is Open source (Free).
- Lark has a free plan (Starter (up to 20 users)); Zimbra has Open-source edition; paid Network Edition.
- Data location: Not confirmed for Lark, Your own server for Zimbra.
- The companies sit under different laws: Lark in Singapore, Zimbra in United States.
Questions people ask
Can I use my own domain with Lark or Zimbra?
Yes, both do. Lark: Yes. Zimbra: Yes.
Where is my email stored with Lark and Zimbra?
Lark keeps it in Not confirmed. Zimbra keeps it in Your own server.
Price changes and news
No price changes for either since 22 October 2026. I check regularly and add any change here with its date.
The latest headlines: Lark news · Zimbra news.
Also worth a look
- mailbox.org4.5 out of 5 overall
- Proton Mail for Business4.0 out of 5 overall
- Tuta Business4.0 out of 5 overall
Lark vs mailbox.org · Zimbra vs mailbox.org · Lark vs Proton Mail for Business · Zimbra vs Proton Mail for Business · Lark vs Tuta Business · Zimbra vs Tuta Business
How to switch
Moving between any two providers works the same way. Pick your two providers for the steps.