refactor(jmap): improve errors management

tests/common/jmap.rs

@@ -72,9 +72,7 @@ fn parse_output<T: DeserializeOwned>(config: &Path, args: &[&str]) -> T {
 ///
 /// Exercises every command in a single ordered flow. Pass a path to a
 /// valid TOML config file with a default JMAP account configured.
-pub fn run(config: &Path) {
-    let email = env::var("EMAIL").expect("EMAIL env var");
-
+pub fn run(config: &Path, email: String) {
     let ts = SystemTime::now()
         .duration_since(UNIX_EPOCH)
         .unwrap()