ImprovMX alternatives · Email
ImprovMX alternatives with a Linux app
The ImprovMX listing does not include a Linux app. 23 of the 125 other email apps in this directory list a Linux app.
ImprovMX has a free plan. Paid plans start at $50 per year (Light, up to 5 domains). 19 of them are free or have a free plan.
23 tools · Listings checked up to Nov 13, 2026 · Where the facts come from
The 12 closest to ImprovMX
- Free plan · from $1/mo
Zoho Mail
Ad-free business email hosting with calendar, tasks and notes
- Zoho Mail starts at $1 per user / month, billed annually (Mail Lite, 5 GB). ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Zoho Mail lists macOS, Windows, Linux, iOS and Android apps.
- Zoho Mail also covers tasks, calendar and email client.
- ImprovMX also covers inbox filtering and transactional email.
- Free trial · from $3/mo
Fastmail
Paid, ad-free email with calendar, contacts and custom domains
- Fastmail starts at $3 per user / month, billed yearly (Basic); Individual is $5, billed yearly. ImprovMX starts at $50 per year (Light, up to 5 domains).
- ImprovMX has a free plan. Fastmail does not, though it has a free trial.
- Only Fastmail lists Windows, macOS, Linux, iOS and Android apps.
- Fastmail also covers calendar and email client.
- Free plan · from $35.99/yr
BlueMail
Cross-platform email client with a unified inbox and built-in AI
- BlueMail starts at $35.99 per year (Plus, shown as $3 per month billed annually). ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only BlueMail lists iOS, Android, macOS, Windows and Linux apps.
- Only ImprovMX lists a web app.
- BlueMail is end-to-end encrypted, according to its own site.
- Free
Claws Mail
Lightweight GTK email and news client, free under the GPL
- Claws Mail is free. ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Claws Mail lists Linux and Windows apps.
- Only ImprovMX lists a web app.
- Claws Mail is open source, according to its own site.
- Free
Sylpheed
Lightweight desktop email client built on GTK+
- Sylpheed is free. ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Sylpheed lists Windows, macOS and Linux apps.
- Only ImprovMX lists a web app.
- Sylpheed is open source, according to its own site.
- Free trial · from $99/yr
HEY
Email service and calendar with sender screening, from 37signals
- HEY starts at $99 per year (HEY for You, annual billing only). ImprovMX starts at $50 per year (Light, up to 5 domains).
- ImprovMX has a free plan. HEY does not, though it has a free trial.
- Only HEY lists macOS, Windows, Linux, iOS and Android apps.
- HEY also covers templates, calendar and email client.
- Free plan · from $3.99/mo
Proton Mail
End-to-end encrypted email service based in Switzerland
- Proton Mail starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Proton Mail lists macOS, Windows, Linux, iOS and Android apps.
- Proton Mail is open source and end-to-end encrypted, according to its own site.
- Proton Mail also covers calendar and email client.
- Free
Thunderbird
Free, open-source email app for Windows, macOS, Linux and Android
- Thunderbird is free. ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Thunderbird lists Windows, macOS, Linux and Android apps.
- Only ImprovMX lists a web app.
- Thunderbird is open source, according to its own site.
- Free plan · from €3/mo
Tuta Mail
End-to-end encrypted email and calendar from Germany
- Tuta Mail starts at €3 per month, paid yearly (lowest paid personal plan). ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Tuta Mail lists Windows, macOS, Linux, iOS and Android apps.
- Tuta Mail is open source and end-to-end encrypted, according to its own site.
- Tuta Mail also covers calendar and email client.
- Free plan · from $8/mo
Mailspring
Open-source desktop email client for Mac, Windows and Linux
- Mailspring starts at $8 per month, or $85 per year (Mailspring Pro). ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Mailspring lists macOS, Windows and Linux apps.
- Only ImprovMX lists a web app.
- Mailspring is open source, according to its own site.
- Free plan · from $5/mo
Newton Mail
Cross-platform email app with read receipts, snooze and send later
- Newton Mail starts at $5 per month, billed annually ($6.99 billed monthly). ImprovMX starts at $50 per year (Light, up to 5 domains).
- Only Newton Mail lists macOS, Windows, Linux, iOS and Android apps.
- Only ImprovMX lists a web app.
- Newton Mail also covers templates, calendar, email client and shared inbox.
- Paid
Zimbra
Self-hosted email, calendar and file sharing for organizations
- ImprovMX has a free plan. Zimbra does not.
- Only Zimbra lists Windows, macOS, Linux, iOS and Android apps.
- Zimbra is open source and self-hostable, according to its own site.
- Zimbra also covers tasks, calendar and email client.
Common questions
Which ImprovMX alternatives have a Linux app?
Zoho Mail, Fastmail, BlueMail, Claws Mail, Sylpheed, HEY, Proton Mail, Thunderbird and 15 more list a Linux app.
Does ImprovMX have a Linux app?
The ImprovMX listing does not include a Linux app. It lists Web.
Which of these email apps are free?
Zoho Mail, BlueMail, Claws Mail, Sylpheed, Proton Mail, Thunderbird, Tuta Mail, Mailspring and 11 more are free or have a free plan.
When was this checked?
Each listing shows its own date. On this page they run from Oct 4, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to ImprovMX: the alternatives its listing names first, then the tools that share the most features with it.