
Loop Habit Tracker
Habitica
Habitify
Streaks
HabitKit - Habit Tracker
HabitBull
Everyday
everyday.app
Postbox
Thunderbird
Mailbird
eM Client
Microsoft Outlook
ProtonMail
Apple Mail
Mailspring
Loop Habit Tracker
PostboxPostbox is recommended for power users, professionals, and businesses that require advanced email organization features, customizability, and integration with other productivity tools.
I guess it's really safe cause it's open source, you can make notes on your habits but don't really do that. Its simple. Really fast. Haven't found a way to connect it to notion. In general it's a great app to track you habits. Does its job. Not more, not less.
Habitica - Habitica is a free habit building and productivity application.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Habitify - The easiest way to keep track of your habits
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Streaks - The to-do list that helps you form good habits.
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.