Ah.  Then no there isn’t a problem.  Just keep wherever it’s saved secure, allow the user to delete their info at any time and disclose that this information is stored to the users.  https://tools.wmflabs.org/iabot does this in the user preferences.

Cyberpower678
English Wikipedia Account Creation Team
English Wikipedia Administrator
Global User Renamer

On Feb 10, 2018, at 11:00, Martin Urbanec <martin.urbanec@wikimedia.cz> wrote:

Repeating myself: A) having an email address in your account isn't required for editing B) what if I don't have an account?

M.

so 10. 2. 2018 v 16:57 odesílatel Maximilian Doerr <maximilian.doerr@gmail.com> napsal:
Why not just make use of the Special:EmailUser function?

Cyberpower678
English Wikipedia Account Creation Team
English Wikipedia Administrator
Global User Renamer

On Feb 10, 2018, at 06:26, Martin Urbanec <martin.urbanec@wikimedia.cz> wrote:

Hello, 

upon request at Czech Wikipedia's helpdesk I created a tool that sends notifications about new weekly articles by e-mail together with its first paragraph and link to it. To accomplish such a thing I need user's email, so I firstly decided to store it in a database. To prevent this tool from spamming I of course require its confirmation by accessing an URL with a random string (MD5 hash of user's email and random number from 1 to 100; I mean, those two things are in one hash). You can have a look at this tool at tools.wmflabs.org/wiki2email/.

My question is: Is this okay? Should I add some kind of formal information to the tool? If so, is there some help page? Should I stop with collecting mails at all and use some WMF-maintained service for mass-emailing (mailman at lists.wikimedia.org maybe?) and make the tool to just send an email to the list itself? 

This question came to my mind before creating, so I do appologize for asking after programming. 

Best regards, 
Martin Urbanec
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