Email change using an incorrectly formatted address.

[eMKejTestingWarriors]

🐞 Describe the bug

There is a possibility to change your e-mail using address like "@gmail.com" or "address@".

🔥 How to reproduce

Steps to reproduce the behavior:

1. Log in to your account.
2. Hover over the place with your username on the right side of menu.
3. Click on "Mail address".
4. Write email with wrong format like "@gmail.com" or "address@".
5. Click "Save" button.
6. Address is added.

🌍 Environment

• Web client

🛠️ Suggested fixes

Fix address email verification which takes place during address is changing.

🔭 Additional information

Application only verifies whether symbol '@' is used in email field.