diff --git a/lettre/Cargo.toml b/lettre/Cargo.toml
index 47c0c25..c51a59f 100644
--- a/lettre/Cargo.toml
+++ b/lettre/Cargo.toml
@@ -30,6 +30,7 @@ serde_json = { version = "^1.0", optional = true }
 serde_derive = { version = "^1.0", optional = true }
 failure = "^0.1"
 failure_derive = "^0.1"
+fast_chemail = "^0.9"
 
 [dev-dependencies]
 env_logger = "^0.5"
diff --git a/lettre/src/lib.rs b/lettre/src/lib.rs
index 012b9ed..f34ac22 100644
--- a/lettre/src/lib.rs
+++ b/lettre/src/lib.rs
@@ -31,6 +31,7 @@ extern crate failure;
 extern crate serde_json;
 #[macro_use]
 extern crate failure_derive;
+extern crate fast_chemail;
 
 pub mod error;
 #[cfg(feature = "file-transport")]
@@ -58,6 +59,7 @@ use std::io;
 use std::io::Cursor;
 use std::io::Read;
 use std::str::FromStr;
+use fast_chemail::is_valid_email;
 
 /// Email address
 #[derive(PartialEq, Eq, Clone, Debug)]
@@ -65,9 +67,10 @@ use std::str::FromStr;
 pub struct EmailAddress(String);
 
 impl EmailAddress {
-    /// Creates a new `EmailAddress`. For now it makes no validation.
     pub fn new(address: String) -> EmailResult<EmailAddress> {
-        // TODO make some basic sanity checks
+        if !is_valid_email(&address) && !address.ends_with("localhost") {
+            Err(EmailError::InvalidEmailAddress)?;
+        }
         Ok(EmailAddress(address))
     }
 }