Outlook alternative

Outlook alternative for Android. Same inbox. New app.

As of 19 Oct 2026, 8 Android apps can take over from Outlook. The same mail can stay. Start with Proton Mail.

Where to start

Proton Mail

Encrypted email in its own address

A new address with end-to-end encryption, in an app that looks as good as it reads.

Encrypted mailbox
New address
Phone, tablet, computer
App lock
Aliases
Works on any Android

Get it on Google Play See the facts

Hand-checked 22 Oct 2026.

What you keep. What changes.

The things people use Outlook for, and which alternatives do them today. Hand-checked against each maker's own pages.

Feature	Outlook	Proton Mail	Spark	Thunderbird	Tuta Mail
Open an existing Outlook inbox	✓	—	✓	✓	—
Encrypted mailbox	—	✓	—	—	✓
Search the whole inbox	✓	✓	✓	✓	✓
App lock	✓	✓	✓	✓	✓
New private address	—	✓	—	—	✓

Source: each maker's website, read by a person on 22 Oct 2026. "—" means not offered, as far as the maker says.

Every alternative, side by side.

8 email apps you can set as the default. Sort by any column.

All No account

8 apps · sorted by name

App ▼	What it does	Price	Updated ▼	Min Android ▼	Get it
Proton MailProton	Encrypted email in its own address	—	Hand-checked 17 Oct 2026	—	website
Tuta MailTutao	Encrypted mail in a Tuta address	Free	26 Sept 2026	Android 8.0+	website
ThunderbirdMZLA	A desktop-style mail app for many accounts	Free	6 Oct 2026	Android 6.0+	website
SparkReaddle	An inbox that sorts people from newsletters and notifications	—	Hand-checked 17 Oct 2026	—	website
OutlookMicrosoft	Mail and calendar for work accounts	—	Hand-checked 17 Oct 2026	—	website
Meronnonbili	A calm, chat-style inbox for the accounts you already have	Free	16 Oct 2026	Android 7.0+	website
Infomaniak MailInfomaniak	Mail for an Infomaniak mailbox	Free	19 Jul 2026	Android 8.1+	website
FairEmailMarcel Bokhorst (M66B)	Fully featured email client. Neat, intuitive user interface. Privacy friendly	Free	4 Oct 2026	Android 6.0+	F-Droid

The first row is pinned and stays on top whatever the sort. Data from F-Droid and hand-checked entries, as of 19 Oct 2026.All 32 Email apps

Switching, in three steps.

Mail on the server stays there. A new app can read the same inbox, or you can start a new address.

Install the new email app

Pick one from the table. Keep Outlook for now.

Add the account

Outlook can stay. Proton Mail is a new address. Spark, Thunderbird and FairEmail can open the inbox you already have.

Set it as the default

Settings, Apps, Default apps, Email app. Pick the new one.

Read the full guide · 10 min · Easy

Questions, answered.

What is the best Outlook alternative for Android?

Start with Proton Mail if you want encryption and a new address. Spark if you want the same inbox sorted for you. Thunderbird if you want many accounts side by side.

Will I lose my mail?

No. Mail on the server stays there. Spark or Thunderbird can open that inbox. Proton Mail is a new mailbox; old mail stays in Outlook until you move it.

Can I go back to Outlook?

Yes. Open Outlook. Mail already on the server is still there.

Does Proton Mail open Outlook?

No. Proton Mail is its own address. Use Spark, Thunderbird or FairEmail if you want the Outlook inbox in another app.

Do I need a new account?

Proton Mail and Tuta yes. Spark, Thunderbird and FairEmail can use the address you already have.