What is a electronic book which include details information of all the people with whom you communicate?

There isn't a single electronic book that exists with details of everyone you've ever communicated with. That would be a massive privacy violation and likely illegal.

However, there are different ways your communication data is stored and accessed, depending on the platform:

1. Individual Apps:

* Messaging Apps: (WhatsApp, Telegram, Messenger, etc.) store your contact lists and messages, usually encrypted for privacy. You can usually access this data within the app settings.

* Email: (Gmail, Outlook, etc.) store your contacts and emails, often allowing for searching and filtering.

* Social Media: (Facebook, Twitter, Instagram) store your connections and interactions, allowing you to see who you've interacted with and how.

2. Operating System:

* Your phone or computer: Stores contact lists and potentially communication logs depending on your settings.

3. Data Collection Companies:

* Some companies track your online activities and browsing habits, and may have data on your communication patterns.

Important Notes:

* Privacy is crucial: Be aware of what information apps and websites collect about you, and use privacy settings to limit data sharing.

* No "master list": There is no single source that compiles all your communication details.

If you're looking to manage your contacts and communications more effectively, consider using a contact management app or a dedicated communication platform that allows you to organize and filter your interactions.