I have received this for 4 out of 8 flights I have taken in the last 3 months. One of my trips, my wife was travelling with me (Blue, on a separate PNR) and she received an upgrade with miles email.

EDIT: Just wanted to add that I have been getting this upgrade offer during OLCI, via the email notification that is sent out when check-in opens up 48 hours before the flight.

Is this new?

Regardless of whether you have received an email upgrade offer, and provided upgrade availability is not all snapped up before you get to 48h from departure, you will get a second pass at the offer at OLCI.

I booked my emirates flight via the chase portal in economy. Does this preclude me from receiving an upgrade offer for business via email or at check in?

In the last year I flown approximately 24 sectors in J between London and Dubai. As a Gold, I've never once been offered an upgrade at any point other than the "upgrade with cash/miles" option in MMB, only to find that there is never any availability. I once proactively called the phone helpline and I was able to upgrade with miles (39,000 one way) when MMB said nothing was available. I yearn for the day when I'm issued a new boarding pass....

It will not happen on LON-DXB as a Gold ;)

This is helpful. I've just received an email offer to upgrade GLA-DXB, £373 PP, 2 weeks exactly before we depart. I think this is a decent offer, was going to hold off to see if I get offered the 2nd leg DXB-SYD, I'd rather put £750 into our upgrade for this leg. If it makes no difference at OLCI I can afford to hold off. I assume the flight will be quiet in any case due to the flights over Christmas Eve, Christmas Day. Here's hoping I receive the option at OLCI!

Accepted the offer; was hesitant to wait in case the opportunity to sit together disappeared.

Just a query and apologies to be bold, would you possibly you have any option to guest into the GLA lounge? I have a current post in the lounge meetup, looking for a sign in for my fiancee. Only on your correspondence that you are in J and on the same flight - that's if you're not travelling with your +1.

Hopefully we get lucky with an op-up DXB-SYD!

Unless their profile is inaccurate, as a Blue member they can't guest in anyone, being in J is irrelevant there.

Y rate unless you paid the full fare difference in cash

“Sorry your promotional code is incorrect “
is this really a wrong code? And can anything be done to get a working one?
or is it just saying that because folk beat me to it and all the email upgrade space has been filled?
this has happened on my last two email offers. I even clicked the button on this most recent one within 3 minutes of getting the email.

Did you get an Op-up? I was on 414 the following day, (early morning of the 26th) 10 people got J-F and 40 people got Y-J.

Apologies for the delay, not long back and switched off from the cyber world whilst on trip. We did get an upgrade at the gate in DXB, a welcome surprise after taking the business offer GLA-DXB (bearing in mine we had a Y flex & both silvers). 14hrs in Business to SYD was excellent and a big relief as we were dreading the flight after the initial luxurious hop.

On the way home SYD-DXB, a couple in front of us received a bump up at gate as we boarded, as we were Y saver tickets, unfortunately we were at the back end of the op-up queue! Any idea how many pax were op-up'd on this flight? EK415 on 17-Jan-2018.

How did you fair on your flight - did you get bumped up?