Delta has a targeted offer to earn 25,000 bonus SkyMiles through partner activity — up to 1,000 miles per participating partner up to 25,000 total bonus miles. From the terms and conditions:
It appears that the promotion was intended for recipients of a targeted email from Delta, but it may be possible for anyone to register. Of course, if you were not targeted but register for the promotion, you may not get the miles (and Delta may not be sympathetic despite your screen shots showing registration). However, if you have planned activity with one of these partners anyway, it could be worth a shot. The registration link is as follows:
You must enter your Delta SkyMiles number after the “=” symbol in the link above. The registration page appears to show a confirmation for everyone. While I would take a screenshot of that confirmation page, it is obviously not a guarantee that you will receive the miles. I will personally give this one a pass, but it may be worth registering and testing with a small partner purchase. The terms state that the bonus miles should post within 60 days of qualifying activity and the earning period is from February 1st, 2017 to April 30, 2017. In theory, if you registered today and earned with a partner today, you would have time to see if that activity posted before trying other partners. That said, there is no guarantee that miles won’t be clawed back for those who were not targeted — YMMV, for sure. Full terms and conditions can be found here.
HT: René’s Points