This article will explain how to mark a task as done in 123-mail webmail. This functionality is used to mark your tasks as complete. In this case, they will remain in your task list, however they are struck out and their finished percentage is set at 100%. To remove them completely from the list you can then delete the task entirely.
Login to the 123-mail webmail.
Click on the Tasks icon in the main toolbar.
Click on the Task you wish to mark as done.
Click on the Mark as Done button under the edit tab. You can also right click on the task from the list and select Mark as Done from the menu that appears.
You can also use your shift or control buttons on your keyboard to select multiple tasks to mark complete in bulk.