We need to send a one off passwordless link that differs from our usual email

We’re having problems with users clicking old passwordless links when requesting new ones. We have a list of about 6000 users we’d like to send a new link them which is different from our stored template.

We’ve already seen that just getting the passwordless link and sending it manually is not supported due to security concerns, is there any other work around for this?

Failing this, is it possible to get the date in the subject line? This would solve the problem of emails getting chained in clients and them clicking the wrong one.