Microsoft Office Outlook Alternatives for Android

K-9 Mail

K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.

• Not the prettiest, but it's open source (trustworthy), free, privacy-respecting and very functional. My go-to Android email client. I cannot hesitate less in recommending it. JohnFastman • Jan 2017 • 5 agrees and 1 disagrees Disagree   Agree
• Deletes e-mail from the server even when underground in NYC subway. Makes life so easy to delete e-mails while on the train When surfacing, K-9 syncs with the server and POOF....those unwanted e-mails are gone from the server. Online_Purchases1 • Feb 2017 • 1 agrees and 0 disagrees Disagree   Agree

Free Open Source Android Android Tablet F-Droid

Spark

Smart Inbox automatically detects if an email is personal, a notification or a newsletter and groups it with similar emails for easy batch processing using beloved swipes. With just a glance, you can see if emails are important or just a product announcement from a service you've never used. We all love the feeling of accomplishment when we have finally dealt with our inbox. Spark makes this easy to achieve. Quickly process your emails, swiping to archive or delete as necessary.

• Nice client. Great UI. It does lack Caldav support unfortunately. Guest • Jan 2020 • 0 agrees and 1 disagrees Disagree   Agree

Freemium Mac Android iPhone

FairEmail

FairEmail is a privacy-focused email client with a setup wizard that helpfully walks you through the steps to use it with any email provider. There are many privacy settings including encryption via OpenPGP and S/MIME and reformatted emails to avoid phishing. It uses a Material Design (including light and dark themes) and comes with many configuration options for the display. It also includes configurable swipe gestures and other shortcuts to adjust the app to match your workflow.

• open source, secure, regularly updated RasheedAZ • Apr 2020 Disagree   Agree

Freemium $ $ $ Open Source Android Android Tablet

BlueMail

BlueMail is a modern, mobile first, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP,Exchange,POP3.

• much lighter, faster more responsive than outlook both in windows and Android. vivid and vibrant colors and ergonomic menu rstefan • 14 days ago Disagree   Agree

Free Personal $ $ $ Mac Windows Linux Android iPhone ... Chrome OS Android Tablet iPad Apple Watch

Spike

Spike is a modern communication and collaboration workspace which turns your existing email into simple, chat-like conversations. Bring all of your communication -- your emails, chats, calls, team collaboration, tasks, everything -- to one place. It’s what your team has been looking for in a productivity and messaging app, all in a single workspace. There's life before Spike. And after Spike.

• Brings all of my communications into one place. Also allows for easier sending, saving, and sharing of files shared amongst my teams. Guest • Sep 2019 Disagree   Agree

Freemium $ $ $ Mac Windows Web Android iPhone ... Android Tablet iPad

Open365

Open365 is an Open Source, self-hosted file sync and cloud apps platform including a full LibreOffice Online. You can also access your email, calendar and contacts using KDE Kontact. Everything is accessible from a simple webpage using any HTML5 browser.

• Discontinued
  The project seems to be no longer developed. Last commit on the GitHub repo was made on June 27th, 2016, but it can be still downloaded and installed.

Free Open Source Android Self-Hosted

EssentialPIM

EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for Personal Information Manager, and it allows you to keep all you information in electronic form. All your appointments, tasks, to do lists, notes and contacts are stored in a graphical and easily accessible form.

• Tricky to configure. Does not speak MAPI, but many Cloudservices. I was not successful to synchronize OwnCloud Guest • Dec 2016 • 0 agrees and 1 disagrees Disagree   Agree

Freemium $ $ $ Windows Android iPhone

HEY

Hey is a new hosted email service launched by the makers of Basecamp , which aims to organize your email inbox. Since they don’t sell ads, or invade your privacy, they charge $99/year for HEY HEY replaces workarounds, messy hacks, and daily frustrations, with built-in workflows, effortless organization, and clever features that levels-up email in meaningful ways.

Commercial $ $ $ Mac Windows Linux Web Android ... iPhone Windows S Android Tablet iPad

TypeApp

TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts. TypeApp is the perfect replacement for your email app. With a powerful unified accounts experience packaged in an intuitive and easy to use design, TypeApp provides a top notch email service.

Free Personal Android iPhone Android Tablet iPad Android Wear ... Kindle Fire

myMail

myMail is the smart email app for managing all your accounts on iOS and Android. Use myMail to manage messages in your Gmail, Hotmail, Live, Outlook, Yahoo, MSN, iCloud and AOL email accounts at once. The app also supports any IMAP and POP3-enabled mailbox. myMail brings all your email into one simple, bright and friendly interface whether its your iPhone or iPad. myMail was created to keep your mail securely in one place. It makes communication light, fast and mobile-friendly.

Free Android iPhone Android Tablet iPad Apple Watch