# Bubble app security

**URL:** <https://forum.bubble.io/t/bubble-app-security/167638>\
**Category:** Database\
**Created:** [September 2, 2021, 8:55pm UTC](https://forum.bubble.io/t/bubble-app-security/167638 "2021-09-02T20:55:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![alasadi.m1738](https://avatars.discourse-cdn.com/v4/letter/a/71c47a/32.png) [@alasadi.m1738](https://forum.bubble.io/u/alasadi.m1738)\
**Post date:** [September 2, 2021, 8:55pm UTC](https://forum.bubble.io/t/bubble-app-security/167638/1 "2021-09-02T20:55:25Z")

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Hey all,

I was wondering if it’s possible to build a Bubble feature that stops people from signing up with an email such as [test@test.com](mailto:test@test.com)?

Thanks  
Mohamad

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**Author:** ![cmarchan](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/cmarchan/32/253062_2.png) [@cmarchan](https://forum.bubble.io/u/cmarchan)\
**Post date:** [September 3, 2021, 2:21am UTC](https://forum.bubble.io/t/bubble-app-security/167638/2 "2021-09-03T02:21:26Z")

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@alasadi.m1738

> [@Email Validator Plugin](http://forum.bubble.io/t/email-validator-plugin/1644):
>
> Hi! Can someone explain me how to use/run Bubble’s email validator plugin step by step once installed?