I know account activation can be avoided by using other verification methods such as captchas etc. However I'm wondering if a solution already exists for the following scenario (which happens to be one of the longest surviving UX annoyances there is).
A user registers for an account and is informed that an email has been sent to their account which requires an activation click.
The leaves this tab open and immediately checks their mail where they find the activation link.
The user clicks the link and a new tab is opened containing a success message at which point the user continues their experience within that tab or goes back to the original tab.
This path ends up with two open tabs for the same site which can be confusing and is not optimal.
Any thoughts/alternatives would be appreciated.