I got an email from one of my readers notified me that he just received a promotion offer from American Express. This promotion is for his Blue Cash from American Express Card. I don’t know whether all of the Blue Cash card members are eligible or not, but this is definitely a good offer from American Express.

According to the offer, you can get 1% bonus rebate from July 1, 2008 to September 30, 2008 for the amount spent over $100 every month. And you can still continue to earn your usual cash rebate for virtually every dollar you spend.

Detailed explanation:

Beginning 7/01/2008 and for each calendar month through 9/30/2008, if your purchases during the month exceed $100, you can earn a bonus rebate of 1% for every eligible dollar of purchases above the threshold charged to your Blue Cash Card enrolled in this promotion.  Total bonus rebate earned each calendar month is subject to a maximum monthly limit of $50.  Total bonus rebate is earned in addition to your annual rebate.

This Blue Cash from American Express Card offers 5% cash back on everyday purchases for the year to date purchases over $6,500. And you will get 1.5% cash back on all the other purchases. For the amount spent less than $6,500, you can get 1.5% cash back on everyday purchases and 0.5% cash back on all the other purchases. This card is a top choice for those big spenders. Or if you can pay your mortgage or rent with your credit card. Because this can easily help you spend more than $6,500 on your blue cash card.

To get this promotion offer, you can go to http://americanexpress.com/bluecash100 and click “Enroll now” button. If you have received the RSVP code from American Express, you can put in the related place. If haven’t received the promotion invitation but have a Blue Cash card, you can try to put in your online account username and password and login to your account to see whether you’re eligible or not.

Actually, there is a trick: if you change the bluecash100 to bluecash300, you have to spend more than $300 to get the 1% bonus. If you change the bluecash100 to bluecash1000, then you have to spent more than $1,000 to get the 1% bonus.

Other promotions from American Express:

1. Earn double points from American Express.

2. Earn 20% bonus points from Starwood Preferred Guest Card from American Express.