diff --git a/example_blocklist1.txt b/example_blocklist1.txt
new file mode 100644
index 0000000..9abbe58
--- /dev/null
+++ b/example_blocklist1.txt
@@ -0,0 +1,5 @@
+example.com
+
+example.org
+
+
diff --git a/example_mutelist1.txt b/example_mutelist1.txt
new file mode 100644
index 0000000..f3ec5c9
--- /dev/null
+++ b/example_mutelist1.txt
@@ -0,0 +1,3 @@
+
+
+example.net
diff --git a/src/list.rs b/src/list.rs
index c3bcbf7..7a581ff 100644
--- a/src/list.rs
+++ b/src/list.rs
@@ -1,34 +1,16 @@
 use std::collections::HashMap;
 
-#[derive(Debug, Eq, PartialEq)]
+mod source;
+mod tests;
+
+pub use source::*;
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum Action {
     Block,
     Silence,
 }
 
-#[derive(Debug)]
-pub struct Source {
-    pub actions: HashMap<String, Action>,
-    pub trust: u16,
-}
-
-impl From<HashMap<String, Action>> for Source {
-    fn from(map: HashMap<String, Action>) -> Self {
-        Self {
-            actions: map,
-            trust: 100,
-        }
-    }
-}
-
-impl Source {
-    pub fn build(map: HashMap<String, Action>, trust: u16) -> Self {
-        let mut src = Self::from(map);
-        src.trust = trust;
-        src
-    }
-}
-
 #[derive(Debug, Default, Eq, PartialEq)]
 pub struct ActionTrust {
     pub block: u16,
diff --git a/src/list/source.rs b/src/list/source.rs
new file mode 100644
index 0000000..3afed2f
--- /dev/null
+++ b/src/list/source.rs
@@ -0,0 +1,49 @@
+use std::{collections::HashMap, fs};
+
+use super::*;
+
+#[derive(Debug, PartialEq, Eq)]
+pub struct Source {
+    pub actions: HashMap<String, Action>,
+    pub trust: u16,
+}
+
+impl Default for Source {
+    fn default() -> Self {
+        Self {
+            actions: HashMap::new(),
+            trust: 100,
+        }
+    }
+}
+
+impl From<HashMap<String, Action>> for Source {
+    fn from(map: HashMap<String, Action>) -> Self {
+        Self {
+            actions: map,
+            trust: 100,
+        }
+    }
+}
+
+impl Source {
+    pub fn build(map: HashMap<String, Action>, trust: u16) -> Self {
+        let mut src = Self::from(map);
+        src.trust = trust;
+        src
+    }
+
+    pub fn add_from_file(&mut self, path: &str, action: Action) -> &mut Self {
+        let contents = fs::read_to_string(path).unwrap();
+        for host in contents.lines().filter(|line| !line.is_empty()) {
+            self.add_action(host, action);
+        }
+
+        self
+    }
+
+    fn add_action(&mut self, host: &str, action: Action) -> &mut Self {
+        self.actions.insert(host.to_string(), action);
+        self
+    }
+}
\ No newline at end of file
diff --git a/src/tests.rs b/src/list/tests.rs
similarity index 65%
rename from src/tests.rs
rename to src/list/tests.rs
index 8bc3831..98bc145 100644
--- a/src/tests.rs
+++ b/src/list/tests.rs
@@ -3,7 +3,6 @@
 use std::collections::HashMap;
 
 use super::*;
-use list::*;
 
 #[test]
 fn add_action() {
@@ -78,6 +77,21 @@ fn source_build_from_hashmap() {
     assert_eq!(src2.trust, 123);
 }
 
+#[test]
+fn source_add_from_file() {
+    let mut src = Source::default();
+    src.add_from_file("example_blocklist1.txt", Action::Block)
+        .add_from_file("example_mutelist1.txt", Action::Silence);
+
+    let test_src = Source::from(HashMap::from([
+        (String::from("example.com"), Action::Block),
+        (String::from("example.org"), Action::Block),
+        (String::from("example.net"), Action::Silence),
+    ]));
+
+    assert_eq!(test_src, src);
+}
+
 #[test]
 fn build_moderation_list() {
     let mut ml = ModerationList::default();
@@ -88,44 +102,43 @@ fn build_moderation_list() {
         (String::from("example.net"), Action::Block),
     ]));
 
-    let src2 = Source::from(HashMap::from([
-        (String::from("example.com"), Action::Block),
-        (String::from("example.org"), Action::Block),
-        (String::from("example.net"), Action::Silence),
-    ]));
+    let mut src2 = Source::default();
+    src2.add_from_file("example_blocklist1.txt", Action::Block)
+        .add_from_file("example_mutelist1.txt", Action::Silence);
 
     ml.add_source(src1).add_source(src2);
 
-    let test_ml = ModerationList(
-        HashMap::from([
-            (String::from("example.com"), ActionTrust::from((200, 0))),
-            (String::from("example.org"), ActionTrust::from((100, 100))),
-            (String::from("example.net"), ActionTrust::from((100, 100))),
-        ])
-    );
+    let test_ml = ModerationList(HashMap::from([
+        (String::from("example.com"), ActionTrust::from((200, 0))),
+        (String::from("example.org"), ActionTrust::from((100, 100))),
+        (String::from("example.net"), ActionTrust::from((100, 100))),
+    ]));
 
     assert_eq!(ml, test_ml);
 
-    let src3 = Source::build(HashMap::from([
-        (String::from("example.com"), Action::Block),
-        (String::from("example.org"), Action::Silence),
-    ]), 200);
+    let src3 = Source::build(
+        HashMap::from([
+            (String::from("example.com"), Action::Block),
+            (String::from("example.org"), Action::Silence),
+        ]),
+        200,
+    );
 
-    let src4 = Source::build(HashMap::from([
-        (String::from("example.com"), Action::Block),
-        (String::from("example.net"), Action::Silence),
-    ]), 50);
+    let src4 = Source::build(
+        HashMap::from([
+            (String::from("example.com"), Action::Block),
+            (String::from("example.net"), Action::Silence),
+        ]),
+        50,
+    );
 
     ml.add_source(src3).add_source(src4);
 
-    let test_ml = ModerationList(
-        HashMap::from([
-            (String::from("example.com"), ActionTrust::from((450, 0))),
-            (String::from("example.org"), ActionTrust::from((100, 300))),
-            (String::from("example.net"), ActionTrust::from((100, 150))),
-        ])
-    );
+    let test_ml = ModerationList(HashMap::from([
+        (String::from("example.com"), ActionTrust::from((450, 0))),
+        (String::from("example.org"), ActionTrust::from((100, 300))),
+        (String::from("example.net"), ActionTrust::from((100, 150))),
+    ]));
 
     assert_eq!(ml, test_ml);
-
 }
diff --git a/src/main.rs b/src/main.rs
index da70c4c..673afcb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,10 @@
 // src/main.rs
 
 mod list;
-mod tests;
 
 fn main() {
     println!("Hello, world!");
+    // TODO argument parsing
+    // TODO logging
+    // TODO config file
 }
\ No newline at end of file