diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 919d3b6..a8cde21 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -33,3 +33,11 @@ Any line of the commit message cannot be longer 72 characters.
     all
 
 The body explains the change, and the footer contains relevant changelog notes and references to fixed issues.
+
+### Release process
+
+Releases are made using `cargo-release`:
+
+```bash
+cargo release --dry-run 0.10.0 --prev-tag-name v0.9.2 -v
+```
diff --git a/Cargo.toml b/Cargo.toml
index 0cc90e1..111259a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lettre"
-version = "0.9.2" # remember to update html_root_url
+version = "0.10.0-pre" # remember to update html_root_url
 description = "Email client"
 readme = "README.md"
 homepage = "https://lettre.at"
diff --git a/src/lib.rs b/src/lib.rs
index e8b2d5d..008f069 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,7 +3,7 @@
 //! This mailer contains the available transports for your emails.
 //!
 
-#![doc(html_root_url = "https://docs.rs/lettre/0.9.2")]
+#![doc(html_root_url = "https://docs.rs/lettre/0.10.0")]
 #![deny(
     missing_copy_implementations,
     trivial_casts,
diff --git a/tests/builder/build_with_envelope.rs b/tests/build_with_envelope.rs
similarity index 95%
rename from tests/builder/build_with_envelope.rs
rename to tests/build_with_envelope.rs
index 180ac59..75e76be 100644
--- a/tests/builder/build_with_envelope.rs
+++ b/tests/build_with_envelope.rs
@@ -1,5 +1,5 @@
+use lettre::builder::EmailBuilder;
 use lettre::{EmailAddress, Envelope};
-use lettre_email::EmailBuilder;
 
 #[test]
 fn build_with_envelope_test() {
diff --git a/tests/builder/skeptic.rs b/tests/builder/skeptic.rs
deleted file mode 100644
index 43ed564..0000000
--- a/tests/builder/skeptic.rs
+++ /dev/null
@@ -1,56 +0,0 @@
-use glob::glob;
-use std::env;
-use std::env::consts::EXE_EXTENSION;
-use std::path::Path;
-use std::process::Command;
-
-#[test]
-fn book_test() {
-    let mut book_path = env::current_dir().unwrap();
-    let readme = Path::new(file!())
-        .parent()
-        .unwrap()
-        .parent()
-        .unwrap()
-        .parent()
-        .unwrap()
-        .join("../README.md");
-    book_path.push(
-        Path::new(file!())
-            .parent()
-            .unwrap()
-            .parent()
-            .unwrap()
-            .parent()
-            .unwrap()
-            .join("../website/content/creating-messages"),
-    ); // For some reasons, calling .parent() once more gives us None...
-
-    for md in glob(&format!("{}/*.md", book_path.to_str().unwrap())).unwrap() {
-        skeptic_test(&md.unwrap());
-    }
-    skeptic_test(&readme);
-}
-
-fn skeptic_test(path: &Path) {
-    let rustdoc = Path::new("rustdoc").with_extension(EXE_EXTENSION);
-    let exe = env::current_exe().unwrap();
-    let depdir = exe.parent().unwrap();
-
-    let mut cmd = Command::new(rustdoc);
-    cmd.args(&["--verbose", "--test"])
-        .arg("-L")
-        .arg(&depdir)
-        .arg(path);
-
-    let result = cmd
-        .spawn()
-        .expect("Failed to spawn process")
-        .wait()
-        .expect("Failed to run process");
-
-    assert!(
-        result.success(),
-        format!("Failed to run rustdoc tests on {:?}!", path)
-    );
-}
diff --git a/website/src/README.md b/website/src/README.md
index 4c131fe..893cca8 100644
--- a/website/src/README.md
+++ b/website/src/README.md
@@ -7,13 +7,9 @@ Lettre is an email library that allows creating and sending messages. It provide
 * Unicode support (for emails and transports, including for sender et recipient addresses when compatible)
 * Secure defaults (emails are only sent encrypted by default)
 
-The `lettre_email` crate allows you to compose messages, and the `lettre`
-provide transports to send them.
-
 Lettre requires Rust 1.36 or newer. Add the following to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-lettre = "0.9"
-lettre_email = "0.9"
+lettre = "0.10"
 ```
diff --git a/website/src/sending-messages/_index.md b/website/src/sending-messages/_index.md
index 39cfd03..9cf4e55 100644
--- a/website/src/sending-messages/_index.md
+++ b/website/src/sending-messages/_index.md
@@ -3,7 +3,7 @@
 This section explains how to manipulate emails you have created.
 
 This mailer contains several different transports for your emails. To be sendable, the
-emails have to implement `SendableEmail`, which is the case for emails created with `lettre_email`.
+emails have to implement `SendableEmail`, which is the case for emails created with `lettre::builder`.
 
 The following transports are available: