Changing associated google account (for tech projects)

When I click on "Subscribe" for a mailing list for a project (i.e. the Gospel Library for iOS Announcements list), it always gets associated with a google account that I do not use...even though I am not logged in to that account in my browser. I *think* it's because it is using the account that is associated with my email address (which is my *real* email address) - but I'd actually like to use a different google account for my mailing list memberships.

Is there a way to change which account is used when subscribing for these lists?

I believe that I have figured it out - but it involves changing my listed email address (within my tech.lds.org profile) to the gmail account that I want to use for mailing lists. This is *not* the email address I would like to have listed on tech.lds.org, however (and changing my address back after re-subscribing to the groups I would like to subscribe to actually changes all the subscriptions as well).

As someone who's worked on the administration side of an LDSTech project, I would really like to figure out how people can control their email addresses better... We get a lot of questions about that. It should be simpler, or documented somewhere at least.