Multiple accounts with the same one email address

[atd]

From https://github.com/P2Pvalue/teem/issues/322 by @fantalavapies

In the registration process is allowed:

[email protected] [email protected] [email protected] ...

Maybe that could be a problem. Kind regards.

[atd]

Besides, we have experienced problems recovering passwords with [email protected]

@atfornes might provide with more details