diff --git a/config.go b/config.go
index 0cd6a92..40aaed8 100755
--- a/config.go
+++ b/config.go
@@ -53,7 +53,7 @@ func NewConfig() Config {
 	as.Append(args.STRING, "todolist", "todo list", "")
 	as.Append(args.STRING, "todotag", "todo tag", "expense")
 
-	as.Append(args.STRING, "banks", "uccu,citi,chase,bankofamerica,fidelity", "uccu,citi,chase,bankofamerica,fidelity")
+	as.Append(args.STRING, "banks", "uccu,citi,chase,bankofamerica,fidelity,americanexpress", "uccu,citi,chase,bankofamerica,fidelity,americanexpress")
 	as.Append(args.STRING, "accounts", "regex to include filter accounts", ".*")
 	as.Append(args.STRING, "not-accounts", "regex to exclude filter accounts", "zzzzzz")
 
@@ -95,6 +95,7 @@ func NewConfig() Config {
 			Citi:          strings.Contains(strings.ToLower(as.GetString("banks")), strings.ToLower(Citi.String())),
 			UCCU:          strings.Contains(strings.ToLower(as.GetString("banks")), strings.ToLower(UCCU.String())),
 			Fidelity:      strings.Contains(strings.ToLower(as.GetString("banks")), strings.ToLower(Fidelity.String())),
+			Amex:          strings.Contains(strings.ToLower(as.GetString("banks")), strings.ToLower(Amex.String())),
 		},
 	}
 	log.Printf("config: %+v", config)
diff --git a/scrape.go b/scrape.go
index 67dc7e9..28c37ca 100755
--- a/scrape.go
+++ b/scrape.go
@@ -55,7 +55,7 @@ func buildScraper(m *mail.Message, banks map[Bank]bool) (scraper, error) {
 	if strings.Contains(strings.ToLower(from), strings.ToLower("AmericanExpress")) && banks[Amex] {
 		return newAmexScraper(), nil
 	}
-	return nil, errors.New("unknown sender: " + from)
+	return nil, fmt.Errorf("unknown sender: %q", from)
 }
 
 func newFidelityScraper() scraper {