That wasn't in the offer letter.

那不在录取通知书中。

I'm looking forward to discussing these final details so we can move ahead with a revised offer letter.

我期待着讨论这些最终细节，以便我们可以继续修改录取通知书。

You always have the best leverage for negotiating after you've received an offer letter but before you've signed it.

在您收到录取通知书之后但在您签署之前，您始终拥有最佳的谈判筹码。

As such, you're likely to receive an offer letter outlining benefits via email as opposed to in person and your first opportunity to negotiate will likely be through a written message.

因此，您很可能会通过电子邮件而不是亲自收到一封概述福利的录取通知书，并且您的第一次谈判机会很可能是通过书面信息。