diff --git a/Cargo.lock b/Cargo.lock
index 80aef66..293c078 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,12 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "adler2"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.3"
@@ -98,6 +104,15 @@ version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
+[[package]]
+name = "crc32fast"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "crossterm"
 version = "0.27.0"
@@ -145,6 +160,17 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
+[[package]]
+name = "flate2"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ced92e76e966ca2fd84c8f7aa01a4aea65b0eb6648d72f7c8f3e2764a67fece"
+dependencies = [
+ "crc32fast",
+ "libz-sys",
+ "miniz_oxide",
+]
+
 [[package]]
 name = "foldhash"
 version = "0.1.5"
@@ -241,6 +267,17 @@ version = "0.2.172"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d750af042f7ef4f724306de029d18836c26c1765a54a6a3f094cbd23a7267ffa"
 
+[[package]]
+name = "libz-sys"
+version = "1.1.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b70e7a7df205e92a1a4cd9aaae7898dac0aa555503cc0a649494d0d60e7651d"
+dependencies = [
+ "cc",
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.12"
@@ -272,6 +309,15 @@ version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
+[[package]]
+name = "miniz_oxide"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
+dependencies = [
+ "adler2",
+]
+
 [[package]]
 name = "mio"
 version = "0.8.11"
@@ -343,6 +389,12 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
+[[package]]
+name = "pkg-config"
+version = "0.3.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
+
 [[package]]
 name = "postfix-log-viewer"
 version = "0.1.0"
@@ -350,6 +402,7 @@ dependencies = [
  "anyhow",
  "chrono",
  "crossterm",
+ "flate2",
  "lazy_static",
  "log",
  "ratatui",
@@ -615,6 +668,12 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7dd6e30e90baa6f72411720665d41d89b9a3d039dc45b8faea1ddd07f617f6af"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
diff --git a/Cargo.toml b/Cargo.toml
index fc90de7..bb40b5f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ anyhow = "1.0.71"
 log = "0.4.17"
 simplelog = "0.12.1"
 lazy_static = "1.4.0"
+flate2 = { version = "1.0.26", features = ["zlib"] }
 
 [features]
 default = []
diff --git a/src/main.rs b/src/main.rs
index f55f285..edeaa0c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,8 +9,9 @@ use crossterm::{
     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
 };
 use ratatui::{backend::CrosstermBackend, Terminal};
-use std::{env, fs, io, time::Duration};
+use std::{env, fs, io, io::Read, path::Path, time::Duration};
 use ui::App;
+use anyhow::anyhow;
 
 fn run_app(
     terminal: &mut Terminal<CrosstermBackend<io::Stdout>>,
@@ -35,19 +36,44 @@ fn run_app(
     }
 }
 
+fn read_file_content(file_path: &str) -> anyhow::Result<String> {
+    let path = Path::new(file_path);
+    let file = fs::File::open(path)
+        .with_context(|| format!("Failed to open file: {}", file_path))?;
+
+    // Check if the file is gzipped by its extension
+    if let Some(ext) = path.extension().and_then(|s| s.to_str()) {
+        if ext.eq_ignore_ascii_case("gz") || ext.eq_ignore_ascii_case("gzip") {
+            let mut decoder = flate2::read::GzDecoder::new(file);
+            let mut content = String::new();
+            decoder.read_to_string(&mut content)
+                .with_context(|| format!("Failed to decompress gzip file: {}", file_path))?;
+            return Ok(content);
+        }
+    }
+
+    // If not gzipped or no extension, read as plain text
+    let mut content = String::new();
+    let mut file = file;
+    file.read_to_string(&mut content)
+        .with_context(|| format!("Failed to read file: {}", file_path))?;
+    
+    Ok(content)
+}
+
 fn main() -> Result<()> {
     // Parse command line arguments
     let args: Vec<String> = env::args().collect();
     if args.len() < 2 {
-        eprintln!("Usage: {} <postfix-log-file> [additional-files...]", args[0]);
+        eprintln!("Usage: {} <postfix-log-file[.gz]> [additional-files...]", args[0]);
         std::process::exit(1);
     }
 
     // Process all log files
     let mut all_sessions = Vec::new();
     for filename in &args[1..] {
-        // Read and parse the log file with its path for better timestamp handling
-        let log_content = fs::read_to_string(filename)
+        // Read file content (handles both plain and gzipped files)
+        let log_content = read_file_content(filename)
             .with_context(|| format!("Failed to read file: {}", filename))?;
 
         // Parse the log file with the file path for better timestamp handling