Logging into my United MileagePlus account today to again check Aer Lingus Business Class availability (see Maximizing British Airways Avios-Aer Lingus Business Class Available) , I noticed that the United MileagePlus Explorer offer is now 65,000 bonus miles, up 5000 bonus miles from the previous 60,000 bonus miles offer (see Get 60,000 Miles with the United MileagePlus Explorer Card)
The additional 5000 bonus miles is from adding an authorized user to your account after first use and within the first 2 months of having the United MileagePlus Explorer card.
If you applied for the United MileagePlus Explorer card within the past 90 days, you can send Chase a Secure Message and request to be matched to the current offer, so that if you add an authorized user you will also receive the 5000 bonus miles.
You might be thinking: if I add my spouse or partner, will that prevent them from getting a bonus if he or she later applies for this same card? The answer is no; being an authorized user on your card does not prevent them from getting the bonus if they later apply for the card themselves.
I do not receive an affiliate referral for this application, but to my knowledge this is the current best available offer for the United MileagePlus Explorer card, and I've updated our Best Travel Credit Cards page accordingly. To see this offer, login to United.com using your MileagePlus number. Here's where to see it: