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Nine alternatives

As of Nov 13, 2026, the best Nine alternative for most people is Microsoft Outlook (3.6 GPA), first in our ranking of email apps. It's also the best free one. The catch, in its listing's words: "Free Outlook for 1 person."

Nine compared with 5 alternatives: BlueMail, Aqua Mail, Microsoft Outlook, Edison Mail and K-9 Mail.

Nine is a paid product with a free trial, starting at $14.99 one-time license. All 5 alternatives are free or have a free plan.

Listings checked up to Nov 13, 2026 · Where the facts come from

Black Friday: is there a Nine sale?

At a glance

ToolPriceFree planRuns on
NineThis toolFree trial · from $14.99 one-timeTrial onlyiOS, Android
BlueMailFree plan · from $35.99/yrYesmacOS, Windows, Linux, iOS, Android
Aqua MailFree plan · from $9.99/moYesiOS, Android
Microsoft OutlookFree plan · from $1.99/moYesWeb, macOS, Windows, iOS, Android
Edison MailFree plan · from $14.99/moYesWindows, iOS, Android
K-9 MailFreeFreeAndroid

How each one differs from Nine

  1. 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).
    • BlueMail has a free plan, which Nine lacks.
    • BlueMail also lists macOS, Windows and Linux apps.
    • BlueMail is end-to-end encrypted, according to its own site.
    • BlueMail also covers templates and inbox filtering.

    Suits: People who want the same email app on phone, Mac, Windows and Linux

    BlueMail vs NineBlueMail pricing and details

  2. Aqua Mail

    Email app for Android and iOS that handles many accounts at once

    • Aqua Mail starts at $9.99 per month (Premium).
    • Aqua Mail has a free plan, which Nine lacks.
    • Aqua Mail does not cover tasks and calendar, which Nine does.

    Suits: People juggling several mailboxes from different providers on a phone

    Aqua Mail vs NineAqua Mail pricing and details

  3. Microsoft Outlook

    Microsoft's email and calendar app for desktop, mobile and web

    • Microsoft Outlook starts at $1.99 per month, or $19.99 per year (Microsoft 365 Basic).
    • Microsoft Outlook has a free plan, which Nine lacks.
    • Microsoft Outlook also lists a web app and Windows and macOS apps.
    • Microsoft Outlook also covers inbox filtering.

    Suits: People who want mail, calendar and contacts from several accounts in one app

    Microsoft Outlook vs NineMicrosoft Outlook pricing and details

  4. Edison Mail

    Free multi-account email app with one-tap unsubscribe

    • Edison Mail starts at $14.99 per month, or $99.99 per year (Edison Mail+).
    • Edison Mail has a free plan, which Nine lacks.
    • Edison Mail also lists a Windows app.
    • Edison Mail also covers inbox filtering.
    • Edison Mail does not cover tasks and calendar, which Nine does.

    Suits: People with several email accounts who want a free unified inbox

    Edison Mail vs NineEdison Mail pricing and details

  5. K-9 Mail

    Open source email client for Android, now moving to Thunderbird

    • K-9 Mail is free.
    • K-9 Mail has a free plan, which Nine lacks.
    • K-9 Mail lists no iOS app, which Nine has.
    • K-9 Mail is open source, according to its own site.
    • K-9 Mail does not cover tasks and calendar, which Nine does.

    Suits: Android users who want an open source IMAP client

    K-9 Mail vs NineK-9 Mail pricing and details

Limits worth knowing in Nine

  • IMAP accounts sync email only; calendar, contacts, tasks and notes need ActiveSync.
  • The price comes from the app's Google Play listing, whose wording may be out of date, and the listing also shows in-app purchases.
  • Nine Work, the enterprise edition, was Android-only with iOS products described as coming.
  • Play lists NextIntelligence.ai as the developer, while the vendor site is branded JiranSoft.
Nine pricing and details

Common questions

What are the alternatives to Nine?

The alternatives to Nine in this directory are BlueMail, Aqua Mail, Microsoft Outlook, Edison Mail and K-9 Mail. Each one has a side-by-side comparison with Nine.

Is there a free alternative to Nine?

Yes. K-9 Mail is free to use. BlueMail, Aqua Mail, Microsoft Outlook and Edison Mail have a free plan alongside paid ones.

Which Nine alternatives work on Windows?

The Nine listing does not include a Windows app. BlueMail, Microsoft Outlook and Edison Mail list one.

Which Nine alternatives work on macOS?

The Nine listing does not include a macOS app. BlueMail and Microsoft Outlook list one.

Is there an open-source alternative to Nine?

K-9 Mail is described as open source on its own site.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.

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