fix wizard

src/sendmail/mod.rs

@@ -0,0 +1 @@
+pub(crate) mod wizard;

src/sendmail/wizard.rs

@@ -0,0 +1,17 @@
+use anyhow::Result;
+use dialoguer::Input;
+use email::sendmail::SendmailConfig;
+
+use crate::{backend::config::BackendConfig, config::wizard::THEME};
+
+pub(crate) fn configure() -> Result<BackendConfig> {
+    let mut config = SendmailConfig::default();
+
+    config.cmd = Input::with_theme(&*THEME)
+        .with_prompt("Sendmail-compatible shell command to send emails")
+        .default(String::from("/usr/bin/msmtp"))
+        .interact()?
+        .into();
+
+    Ok(BackendConfig::Sendmail(config))
+}