usually allow a few days for grace period as a courtesy

来源: sangran 于 2018-03-21 08:23:43 [] [旧帖] [给我悄悄话] 本文已被阅读： 次 (157 bytes)

just like you buy a house from builder.

So they might collect your mails and forward them to you, instead of throwing away as trash.

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