See if you can click on the email offer link, then quickly look at and copy / paste the NOW voucher code embedded at the URL address bar on your browser.
The voucher code will either start with NOW or SMPT and be around 12 to 14 letters and numbers long.
If there is a code and you can copy it down, then use this code under My Membership apply code box in the NOW account you want to use.
If trying to use on a NOW account billed through a third party such has BT TV for example it won't work and need to be billed directly by NOW themselves and not have either a saved Day Sports Pass or active Day Sports Pass or be on an existing Sports offer with more than 30 days left.
Also has a safety precaution add a payment PIN to the two email NOW accounts in question.
Then if you click the email link offer or copy the voucher code and apply it to the second account, it should usually ask you for your setup payment pin number before proceeding to the checkout stage to accept and purchase the offer.
Then you can double check that everything on the screen looks right and is acceptable before accepting and clicking on the buy button.
I never get these NOW email offers myself, so can't guarantee the suggestions in my posts will work in your case scenario.
Although these email offers come to specific users the offer itself isn't actually locked to a specific account. I have frequently forwarded unwanted offers to friends and they have claimed them no problems, so just click the email link and log in with your usual details.
If you’re on a current discounted rate, you won’t be able to apply it. The only way around it is to either, cancel and let it expire or jump onto live chat and explain with staff.
Make sure to be signed in and use ‘How to get in touch’ drop down for live chat.