收到 AMEX 的邮件，给 Platinum 卡添加一张副卡（Authorized User），并用这张副卡在六个月内消费 $2000，可以获取 20k Membership Rewards。链接如下，大家可以试试能否激活，如果可以那就无脑上啊。Green 也有 5k 的 offer

按照之前的经验，白金卡最好的就是添加金卡副卡（没错，白金卡的副卡可以选成金卡），因为白金副卡是有年费的，金卡无年费（最多四张）。这个 offer 也没说必须要添加白金副卡。Green 卡的副卡就是 Green，无年费，不用担心。

如果你的副卡持有人有单独的地址，可以填上。这个还是挺方便的，其他几个银行的副卡都默认到主卡地址。当然，如果同一个地址，直接勾上就好。

经过一番等待

看这速度，估计是平邮了。不知道申请白金副卡会不会有 ups express/next day

Offer term 如下，倒是没说到一年内关卡有没有可能收回积分的事情。注意下最好不要买 gc 完成开卡消费即可。

OFFER TERMS
Add one or more new Additional Card Members to your account and you can earn 20,000 Membership Rewards points for the first Additional Card Member that spends $2,000 or more in eligible purchases on their Card within their first 6 months of Card Membership starting from the date on which the Additional Card Member is added. The maximum you can earn as part of this offer is 20,000 Membership Rewards points. Purchases made by other Additional Card Members on your Account will not count toward the $2,000 purchase requirement. Purchases made by eligible Additional Card Members will not be combined to satisfy the $2,000 purchase requirement. Your purchases as the Basic Card Member will not count toward the $2,000 purchase requirement.

You can earn 20,000 Membership Rewards points after the Additional Card Member spends $2,000 or more on eligible purchases on their Card within their first 6 months of Card Membership starting from the date on which the Additional Card Member is added. In rare instances, the Additional Card Member's period to $2,000 may be shorter than 6 months if there is a delay in receiving their Card. Also, purchases may fall outside of the 6 month period in some cases, such as a delay in merchants submitting transactions to us or if the purchase date differs from the date they made the transaction. (For example, if they buy goods online, the purchase date may be the date the goods are shipped) . The 20,000 Membership Rewards® points will be applied 8-12 weeks after the Threshold Amount is met.

If we in our sole discretion determine that you or your Additional Card Members have engaged in abuse, misuse, or gaming in connection with this offer in any way or intend to do so (for example, if you added one or more Additional Cards to obtain an offer (s) that we did not intend for you; or if you or your Additional Card Members cancel or return purchases made to meet the Threshold Amount), we may not credit Membership Rewards points to, we may freeze Membership Rewards point credited to, or we may take away Membership Rewards points from your account. We may also cancel this Card account and other Card accounts you and your Additional Card Members may have with us.

Your account must not be canceled or past due at the time of fulfillment of any offers.
Eligible purchases are purchases for goods and services minus returns and other credits. Eligible purchases do NOT include fees or interest charges, purchases of travelers checks, purchases or reloading of prepaid cards, purchases of gift cards; person-to-person payments; or purchases of other cash equivalents. Additional terms and limitations apply.

The annual fee for the Platinum Card is $695. The annual fee for Additional Cards is $175 for up to 3 Additional Cards. The annual fee for the 4th or more Additional Cards is $175 for each Card.

There is no additional fee for Gold Cards.

American Express reserves the right to modify or revoke offer at any time.

Terms and Conditions for the Membership Rewards® program apply. Visit membershiprewards.com/terms for more information. Participating partners and available rewards are subject to change without notice.

The value of Membership Rewards points varies according to how you choose to use them. To learn more, go to www.membershiprewards.com/pointsinfo.