fix(email): changed verification method

provider/mail/smtp/smtp.go

@@ -13,11 +13,9 @@ type SmtpMailProvider struct {
 }
 
 func New(env *env.Environment) *SmtpMailProvider {
-	auth := smtp.PlainAuth(
-		env.SmtpIdentity,
+	auth := smtp.CRAMMD5Auth(
 		env.SmtpUsername,
 		env.SmtpPassword,
-		env.SmtpServer,
 	)
 
 	return &SmtpMailProvider{