I have been searching for a good cross-platform email client for a really long time. Here are my requirements and a few shortcomings of popular clients.


  1. At least available on Android, Linux, Windows 10.
  2. At least support both personal and organizational accounts for gmail and outlook.
  3. Email-accounts synchronization. I only have to set up my 6 email accounts in 1 device, and all other devices should have access to those accounts without any further configuration on other devices.
  4. Able to send, receive, forward, reply, delete, archive emails on all devices, which may contain image, file, hyperlinks and, very importantly, appointment/meeting/schedule invite.


  1. Outlook does not support Linux or accounts sync. It also has some problems with my gmail university account.
  2. thunderbird does not support sync. No Android.

Please let me know if clarification needed.

  • 1
    Googles gmail xD with chrome-browser XD
    – user11879
    Nov 16, 2018 at 17:59

2 Answers 2


I'm not aware of any traditional (offline capable) mail client that could do that.

Some web-based solutions might be useful here. They'll work on all of the above platforms though might pose some challenges when it comes to using the interface from a mobile phone.

Web-based clients include:
- Roundcube (does not seem to do calendar stuff)


For desktops, Thunderbird is a great tool. I recommend it because:

  1. I use it professionally for synchronize with different services. For example, LDAP e-mail synchronization, calendar synchronization with https://yahoo.com, and e-mail synchronization with https://yahoo.com, https://web.de, and https://hotmail.com.

  2. Thunderbird supports calendar sync with appointments using lightning add-on. If you're on Linux, install the lightning add-on using the command line.

I mention it here because it supports macOS, Windows 11, and modern Linux-based OSes, and although it doesn't suppot AOSP yet, a request exists at https://bugzilla.mozilla.org/show_bug.cgi?id=1897166#c0, which you can support.

  • I am using Thunderbird and K9 for Android. But this does not answer the OP's question
    – Mawg
    Nov 12, 2018 at 12:53

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