Firefox mailbox

You're referring to the built-in email client in Firefox, also known as "Mail" or "Mail & Newsgroups"!

The Firefox Mail client allows you to manage your email accounts, compose and send emails, and even access newsgroups. Here are some key features:

Setting up your email account:

1. Go to the Firefox menu (three horizontal lines in the top right corner) and select "Options" (or "Preferences" on a Mac).
2. Click on "Mail & Newsgroups" from the left-hand menu.
3. Enter your email account details, such as your email address, password, and server settings.
4. Click "Done" to save your changes.

Composing and sending emails:

1. Click on the "Compose" button in the top left corner of the Firefox window.
2. Enter the recipient's email address in the "To" field.
3. Write your email message in the main body of the window.
4. Add attachments by clicking the "Attach file" button.
5. Click the "Send" button to send your email.

Managing your email accounts:

1. Click on the "Accounts" button in the top left corner of the Firefox window.
2. You can add, edit, or remove email accounts from this menu.
3. You can also set up multiple email accounts and switch between them easily.

Other features:

• You can also access newsgroups, which allow you to participate in online discussions and share information with others.
• Firefox Mail includes basic formatting options, such as bold, italic, and underline, as well as spell checking.
• You can also use the "Undo" and "Redo" buttons to correct any mistakes you make while composing an email.

Overall, the Firefox Mail client is a convenient and easy-to-use email client that integrates well with the Firefox browser.