

Things get a bit more complicated here because back in 2015 Microsoft bought Wunderlist, the popular to-do manager. Outlook has a built-in app called Tasks, which is also available as a web app in Office 365. And just like Tasks, you can access your add-ins when you’re in the Gmail mobile app. To-do list add-ins are also available as web and mobile apps which automatically sync with each other. Different add-ins give you different options, but all to-do list add-ins generally allow you to add a task directly from a selected email. We’ve previously covered installing Gmail add-ins generally, and the Trello add-in specifically. You can use Gmail or Outlook clients, but they’re not much use if you want to synchronize your tasks from your phone to your Mac. The same as on a Mac, people who have an iPhone and want to use Apple Mail are not going to get much from the mobile app. In addition, when you install an add-in to Outlook, it automatically installs on the desktop client, and the mobile and web apps. So, if you manage your tasks in Trello and install the add-in to the Gmail or Outlook client, it’s automatically available when you open the corresponding mobile app, as well. Neither has the task creation tools of the web or client versions, but they both automatically carry over the add-ins to third-party apps. When it comes to mobile apps, both Gmail and Outlook work pretty much the same.

Or you can send email to your third-party to-do list manager and manage them there. If you want to manage tasks on a desktop client, your best option is probably Thunderbird for Mac. Apple Mail does task management poorly compared to Gmail and Outlook. On a Mac, the picture is a bit less positive. If you already use a third-party to-do list manager, though, Thunderbird won’t cut the mustard. If you can’t use Outlook for some reason, Thunderbird is a good alternative. Thunderbird does have some built-in task management features, and they’re not bad, but Outlook is much slicker and allows you to connect to myriad third-party apps.

For Windows desktop clients, Outlook wins hands down.
