Translations:Growth/Analytics updates/Welcome survey initial report/80/en

We examined the difference between the timestamps of account registration and verification token expiration for accounts registered between January 1 and July 1 2018 on both Wikipedias and found that it is typically set to slightly more than seven days. How much more is "slightly more"? In the vast majority of cases less than ten seconds, which we think is the delay between the system creating the account and the subsequent emailing of the verification token (at which point the expiration timestamp is set to "seven days from now"). We therefore adopted a simple heuristic for determining if the user supplied an email at registration: it happened if the difference between the two timestamps is less than "one week + ten seconds".