ImprovMX vs Kualo

On privacy it's Kualo. On price it's a tie. On features it's Kualo. Here's everything side by side, last checked 25 October 2026.

Which should you choose?

ImprovMX is the better pick if you want to pay less: $50 a year and to try it free first.
Kualo is the better pick if you want your email to stay in the United Kingdom; more space for your mail: 10 GB; and to read your mail in any app, such as Apple Mail, Outlook or Thunderbird.

Feature	ImprovMX	Kualo
Overall	1.5	3.0
Privacy	0.5	2.5
Price	3.5	3.5
Features	Not rated	3.5
Cheapest plan	Light $50 a year	Zimbra Professional Email From £3.99 per user a month (10 GB Zimbra mailbox, longer terms)
Free plan	Yes, 1 domain, 25 aliases	No
Storage	Forwards only	10 GB
Your own domain	✓ Yes	✓ Yes
End-to-end encryption	No	No
Company based in	Not confirmed	United Kingdom
Your data is kept in	Not confirmed	United Kingdom
Founded	Unknown	2000
Free trial	Free plan	60-day money-back guarantee
Funded by advertising	No	No
Works in any mail app	No, its own apps only	✓ IMAP and SMTP
Calendar and contacts	No	No
Aliases	25 to 200 aliases per domain	Yes
Open-source apps	No	No
Sign up without ID	No	No
White label	Unknown	Unknown
Reader offer	None	None
Last checked	22 October 2026	25 October 2026

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Where they differ

ImprovMX's cheapest plan is Light ($50 a year); Kualo's is Zimbra Professional Email (From £3.99 per user a month (10 GB Zimbra mailbox, longer terms)).
For free, ImprovMX gives you a free plan (1 domain, 25 aliases), and Kualo no free plan.
ImprovMX comes with no storage, as it forwards mail on and Kualo with 10 GB of storage.
ImprovMX keeps your mail in Not confirmed, while Kualo keeps it in the United Kingdom.
ImprovMX is based in Not confirmed and Kualo in the United Kingdom, so different privacy laws apply.
ImprovMX only works in its own apps, and Kualo works in any mail app over IMAP.
For extra addresses, ImprovMX has 25 to 200 aliases per domain and Kualo has yes.

Common questions

Which is more private, ImprovMX or Kualo?

Kualo scores 2.5 out of 5 for privacy and ImprovMX 0.5. Kualo gives you your email to stay in the United Kingdom.

Which is cheaper, ImprovMX or Kualo?

ImprovMX is cheaper. Its Light plan is $50 a year, against From £3.99 per user a month (10 GB Zimbra mailbox, longer terms) for Kualo's Zimbra Professional Email. ImprovMX also has a free plan. Check the renewal price before you pay, as some first-year prices go up.