20i vs Zimbra
20i wins on privacy, they tie on price and 20i wins on features. Every fact below was checked on or before 25 October 2026.
Should you pick 20i or Zimbra?
- Choose 20i if you want your mail kept in the United Kingdom.
- Choose Zimbra if you want a free plan to start on and apps whose code is public.
| Feature | 20i | Zimbra |
|---|---|---|
| Overall | Not rated | Not rated |
| Privacy | 2.5 | Not rated |
| Price | Not rated | Not rated |
| Features | 4.5 | Not rated |
| Cheapest plan | Email hosting Not confirmed | Open source Free |
| Free plan | No | Open-source edition; paid Network Edition |
| Storage | 10 GB | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | United Kingdom | United States |
| Your data is kept in | United Kingdom | Your own server |
| Founded | Unknown | Unknown |
| Free trial | Unknown | 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 | ✓ Yes | Unknown |
| Reader offer | None | None |
| Last checked | 25 October 2026 | 22 October 2026 |
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How 20i and Zimbra differ
- 20i's cheapest plan is Email hosting (Not confirmed); Zimbra's is Open source (Free).
- For free, 20i gives you no free plan, and Zimbra Open-source edition; paid Network Edition.
- 20i comes with 10 GB of storage and Zimbra with storage not confirmed.
- 20i keeps your mail in the United Kingdom, while Zimbra keeps it in Your own server.
- 20i is based in the United Kingdom and Zimbra in the United States, so different privacy laws apply.
20i and Zimbra: your questions
Do 20i and Zimbra work with my own domain?
Yes, both do. 20i: Yes. Zimbra: Yes.
Where do 20i and Zimbra keep my email?
20i keeps it in the United Kingdom. Zimbra keeps it in Your own server.
Price changes and news
I haven't seen either change its price since I started checking on 22 October 2026.
The latest headlines: 20i news · Zimbra news.
Also worth a look
- mailbox.org4.5 out of 5 overall
- Tuta Business4.0 out of 5 overall
- Proton Mail for Business4.0 out of 5 overall
20i vs mailbox.org · Zimbra vs mailbox.org · 20i vs Tuta Business · Zimbra vs Tuta Business · 20i vs Proton Mail for Business · Zimbra vs Proton Mail for Business
Switching between them
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.