I've been following this project for a couple of years, and this is truly a no-brainer for removing spam that's unnecessarily filling up inboxes everywhere. I think even companies that are sending out sales emails and campaigns would be interested in this, because it makes it easier for them to constrain the time limit of a campaign. As long as the user has the ability to override the time-out of the emails, everyone's interest is maintained.
I've been following this project for a couple of years, and this is truly a no-brainer for removing spam that's unnecessarily filling up inboxes everywhere. I think even companies that are sending out sales emails and campaigns would be interested in this, because it makes it easier for them to constrain the time limit of a campaign. As long as the user has the ability to override the time-out of the emails, everyone's interest is maintained.