re-use username or e-mail that has been deleted


I hope you have a good day.

Simple quick question: is it possible to re-use a username or E-Mail adress from a user that has been deleted? For testing I am creating and deleting a lot of useraccounts and sites, then deleting them again, but I cannot Register a new username with same username or E-Mail like the deleted one.

Is there something like a "Cache" or table that I could flush in order to re-use same username or same E-Mail again?

Kind Regards,

  • Manuel
    • Design Lord, Child of Thor

    Hi Luis

    I followed this, but still it is not possible to register with an e-mail that has been used earlier. It seems to me as the system keeps it somewhere, maybe for a few days.

    Let me explain more detailed:

    1. I register a user (or a site, etc.) - for example for testing purpose
    2. I remove the user incl. removing out of the network
    3. I would like to register a new user with the same e-mail like my first test, it doesn't let me telling the e-mail had already been used.

    Please find enclosed my screenshots proofing I have removed from all sites and network user with e-mail
    a) sites.png - screenshot showing all sites
    b) main site - screenshot showing users for main site
    c) sub site vorlage.png - screenshot showing users from sub sute vorlage
    d) sub site hairimpulsing.png - screenshot showing sub site hairimpulsing
    e) network.png - screenshot showing the network
    f) register new example user.png - screenshot showing error for rregister user

    I assume the system looks up somewhere to identify that this e-mail adress has been used, for example in a table or somewhere else. Do you know if there is a place where I could from time to time manually remove entries to unlock those test-regsitrered-adresses?

    This is a minor issue and if not solveable we can ignore it.

    Support Aceess is granted.

    Kind Regards,

  • Patricia BT
    • Connector


    Just got an idea

    OK no more users have this email address, but maybe this address is still one of the sub-sites' main email, which you find under Settings->General in the sub-sites dashboard, OR in the All Sites->Edit, under the network dashboard.


  • Manuel
    • Design Lord, Child of Thor

    Hi Patricia

    God idea, I just checked it, but unfortunatly all subsites have the same e-mail adress "", so it must be somewhere else.

    Any other idea?

    This is a minor issue, if somebody knows that would be gread, but it wouldn't be necessary to spend much time in searching a solution for this issue. But if maybe somebody else had solved this already I would appreciate if he could share his solution here.

    Kind Regards,

  • Manuel
    • Design Lord, Child of Thor

    Hi Faydra

    Thank you for your input. I checked the wp_users table but cannot see more users there as on the backend.

    There are 3 users:

    registering test1 with e-mail did not work (i used this user before and deleted, register new with same e-mail does not work).

    I think we are on the right track, just not yet found it :slight_smile: any other ideas?

    Kind Regards,

  • Manuel
    • Design Lord, Child of Thor


    I'm learning much about wp at the moment.

    Did not found anything that seems to me related to test1 account in usermeta table. I think we are on the right track!

    To find the cause of this pitty I have exported the database and searched with text-editor-tool for test1, i found entries in two further tables:
    - wp_registration_log
    - wp_signup

    can i safely remove entries there (i'm sure there is no more site with this user) or would that crash my database somehow? (does anybody know if there are any other constraints/relations to those entries?)

    Kind Regards,

  • Luís
    • Support

    Hi @Manuel,

    I hope had been good today!

    Sorry for my late reply and all the problems it may have caused.

    From what I searched, wp_registration_log table is just a log, so seems to be safe to remove those entries:

    But honestly, it's something that I never tried before, so I not sure about this procedure

    Make a backup of your database, before do that, in order to have secure point to go back.

    Cheers, Luís

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