Custom types for flags and encrypted outside test

internal/smtp/preferences.go

@@ -45,7 +45,7 @@ type SendPreferences struct {
 	// internal emails (including the so-called encrypted-to-outside emails,
 	// which even though meant for external users, they don't really get out of
 	// our platform). If the email is sent unencrypted, no PGP scheme is needed.
-	Scheme int
+	Scheme pmapi.PackageFlag
 
 	// MIMEType is the MIME type to use for formatting the body of the email
 	// (before encryption/after decryption). The standard possibilities are the

internal/smtp/preferences_test.go

@@ -41,7 +41,7 @@ func TestPreferencesBuilder(t *testing.T) {
 
 		wantEncrypt   bool
 		wantSign      bool
-		wantScheme    int
+		wantScheme    pmapi.PackageFlag
 		wantMIMEType  string
 		wantPublicKey string
 	}{

internal/smtp/user.go

@@ -283,7 +283,7 @@ func (su *smtpUser) Send(from string, to []string, messageReader io.Reader) (err
 			return err
 		}
 
-		var signature int
+		var signature pmapi.SignatureFlag
 		if sendPreferences.Sign {
 			signature = pmapi.SignatureDetached
 		} else {