金枝简信（国内短信）
按需发送，按量计费；成功计费，失败返还；无使用期限。
事务类短信可用于短信通知/验证码等触发类短信； 运营类短信可用于短信营销推广等短信。 资源包无使用期限，短信成功计费，失败立即返还。
Send on demand, pay by volume; Successful billing, failure refund; No expiration date. Transaction type SMS can be used for triggering SMS notifications/verification codes, etc;Operational SMS can be used for SMS marketing and promotion.The resource package has no expiration date, and SMS billing is successful. If it fails, it will be returned immediately.
