diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3ca4ed9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/target
+/.direnv
+/Session.vim
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..ff0b35f
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,376 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "anyhow"
+version = "1.0.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "595d3cfa7a60d4555cb5067b99f07142a08ea778de5cf993f7b75c7d8fabc486"
+
+[[package]]
+name = "atty"
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+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
+[[package]]
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+version = "1.0.1"
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+checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+
+[[package]]
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+checksum = "0b25d992356d2eb0ed82172f5248873db5560c4721f564b13cb5193bda5e668e"
+dependencies = [
+ "byteorder",
+]
+
+[[package]]
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+
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+
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+ "base64 0.10.1",
+ "encoding_rs",
+]
+
+[[package]]
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+ "libc",
+ "num-integer",
+ "num-traits",
+ "time",
+ "winapi",
+]
+
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+dependencies = [
+ "atty",
+ "bitflags",
+ "clap_derive",
+ "indexmap",
+ "lazy_static",
+ "os_str_bytes",
+ "strsim",
+ "termcolor",
+ "textwrap",
+ "unicode-width",
+ "vec_map",
+]
+
+[[package]]
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+ "heck",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+ "cfg-if",
+]
+
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+ "unicode-segmentation",
+]
+
+[[package]]
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+ "libc",
+]
+
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+ "autocfg",
+ "hashbrown",
+]
+
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+
+[[package]]
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+ "anyhow",
+ "chrono",
+ "clap",
+ "mailparse",
+]
+
+[[package]]
+name = "mailparse"
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+ "base64 0.13.0",
+ "charset",
+ "quoted_printable",
+]
+
+[[package]]
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+ "autocfg",
+ "num-traits",
+]
+
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+ "autocfg",
+]
+
+[[package]]
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+
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+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "version_check",
+]
+
+[[package]]
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+ "proc-macro2",
+ "quote",
+ "version_check",
+]
+
+[[package]]
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+ "unicode-xid",
+]
+
+[[package]]
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+ "proc-macro2",
+]
+
+[[package]]
+name = "quoted_printable"
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+
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+
+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "winapi-util",
+]
+
+[[package]]
+name = "textwrap"
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+dependencies = [
+ "unicode-width",
+]
+
+[[package]]
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+dependencies = [
+ "libc",
+ "wasi",
+ "winapi",
+]
+
+[[package]]
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+
+[[package]]
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+
+[[package]]
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+
+[[package]]
+name = "vec_map"
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+
+[[package]]
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+
+[[package]]
+name = "wasi"
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+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
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+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..ef765c3
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "mailcat"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.42"
+chrono = "0.4.19"
+clap = { version = "3.0.0-beta.2", features = ["derive"] }
+mailparse = "0.13.5"
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..4ff56cd
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,39 @@
+{
+  description = "AzireVPN client";
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    naersk.url = "github:nmattia/naersk";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, naersk }:
+    flake-utils.lib.eachDefaultSystem (
+      system: let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+        naersk-lib = naersk.lib."${system}";
+      in
+        rec {
+          packages.azirevpn = naersk-lib.buildPackage {
+            pname = "azirevpn";
+            root = ./.;
+          };
+          defaultPackage = packages.azirevpn;
+          apps.azirevpn = flake-utils.lib.mkApp {
+            drv = packages.azirevpn;
+          };
+          defaultApp = apps.azirevpn;
+          devShell = pkgs.mkShell {
+            name = "azirevpn-env";
+            buildInputs = [
+              pkgs.cargo
+              pkgs.clippy
+              pkgs.rust-analyzer
+              pkgs.rustc
+              pkgs.rustfmt
+            ];
+          };
+        }
+    );
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..c8e3a88
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,47 @@
+use anyhow::anyhow;
+use clap::Clap;
+
+use mailparse::MailHeaderMap;
+use std::io::Read;
+
+/// MIME mail viewer.
+#[derive(Clap, Debug)]
+#[clap(version=clap::crate_version!())]
+struct Opts {
+    filename: Option<String>,
+}
+
+fn main() -> Result<(), anyhow::Error> {
+    let opts = Opts::parse();
+    dbg!(&opts);
+    let input = match opts.filename {
+        Some(filename) => std::fs::read(filename)?,
+        None => {
+            let mut result = Vec::new();
+            std::io::stdin().read_to_end(&mut result)?;
+            result
+        }
+    };
+    let message = mailparse::parse_mail(&input)?;
+    println!(
+        "Subject: {}",
+        message
+            .headers
+            .get_first_value("Subject")
+            .unwrap_or_default()
+    );
+
+    let date_str = &message
+        .headers
+        .get_first_value("Date")
+        .ok_or_else(|| anyhow!("No date"))?;
+    dbg!(&date_str);
+    let date = chrono::DateTime::parse_from_rfc2822(&date_str)?;
+    println!("Date: {}", date);
+    // dbg!(&message);
+    //
+    let body = message.get_body()?;
+    println!("---");
+    print!("{}", body);
+    Ok(())
+}