diff --git a/README.md b/README.md
index 6f115f9..7476822 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ A ProtonMail CLI tool written in Go, similar to gog.
 
 ## Features
 
-- **Authentication**: Login/logout with 2FA support
+- **Authentication**: Interactive login/logout with 2FA support and masked password prompts
 - **Session Management**: Secure token storage in `~/.config/pop/`
 - **ProtonMail API Client**: REST client with rate limiting and error handling
 - **PGP Encryption**: Full support for ProtonMail's PGP encryption via gopenpgp v2
@@ -24,12 +24,9 @@ make install
 ## Usage
 
 ```bash
-# Initialize login (interactive mode)
+# Initialize login (interactive mode with masked password prompt)
 pop login
 
-# Login with explicit credentials
-pop login --email user@proton.me --password secret
-
 # Check current session
 pop session
 
diff --git a/man/pop.1 b/man/pop.1
new file mode 100644
index 0000000..1b1c0be
--- /dev/null
+++ b/man/pop.1
@@ -0,0 +1,84 @@
+.TH POP 1 "April 2026" "pop 1.0" "ProtonMail CLI"
+.SH NAME
+pop \- A ProtonMail CLI tool written in Go
+.SH SYNOPSIS
+.B pop
+.RI [ command ] [ options ]
+.SH DESCRIPTION
+.B pop
+is a command-line interface for interacting with the ProtonMail API. It provides authentication, session management, and secure PGP encryption support.
+.SH COMMANDS
+.TP
+.B login
+Authenticate with ProtonMail API using interactive prompts with masked password input. Supports two-factor authentication (2FA).
+.TP
+.B logout
+Clear stored session credentials and end current session.
+.TP
+.B session
+Display current session information including user ID and authentication status.
+.SH OPTIONS
+.TP
+.BR -h ", " \-\-help
+Show help message for the command.
+.TP
+.BR -v ", " \-\-version
+Show version information.
+.SH CONFIGURATION
+Configuration file: ~/.config/pop/config.json
+
+Default configuration:
+.RS
+.nf
+{
+  "api_base_url": "https://api.protonmail.ch",
+  "timeout_sec": 30,
+  "rate_limit_requests": 100,
+  "rate_limit_window_sec": 60
+}
+.fi
+.RE
+
+Session file: ~/.config/pop/session.json
+.SH FILES
+.TP
+.B ~/.config/pop/config.json
+Application configuration
+.TP
+.B ~/.config/pop/session.json
+Session credentials and tokens
+.TP
+.B ~/.config/pop/attachments/
+Attachment storage directory
+.SH EXAMPLES
+.TP
+.B pop login
+Start interactive authentication with ProtonMail
+.TP
+.B pop session
+Display current session information
+.TP
+.B pop logout
+End current session and clear credentials
+.SH EXIT STATUS
+.TP
+.B 0
+Successful execution
+.TP
+.B 1
+General error
+.TP
+.B 2
+Authentication error
+.SH DIAGNOSTICS
+Errors are reported to stderr with descriptive messages. Common issues include:
+- Network connectivity problems
+- Invalid credentials
+- Session expiration
+- Configuration file parse errors
+.SH BUGS
+Report bugs at https://github.com/frenocorp/pop/issues
+.SH AUTHOR
+FrenoCorp Development Team
+.SH COPYRIGHT
+Copyright (c) 2026 FrenoCorp. MIT License.