Enable 2-step Authentication by Email
To enable 2-step authentication by email, the following settings are required
### Setup to Send Email
[Set up to send emails from Pleasanter](/manual/smtp-mail)
Be sure to set "SupportFrom" in [Mail.json](/manual/mail.json).
### Set the user's email address
[User management function](/manual/user)
### Enabled by SecondaryAuthentication parameter in Security.json
[Parameter setting：Security.json](/manual/security-json)
```
"SecondaryAuthentication": {
"Mode": "DefaultEnable",
"NotificationType": "Mail",
"AuthenticationCodeCharacterType": "Number",
"AuthenticationCodeLength": 8,
"AuthenticationCodeExpirationPeriod": 300
}
```
# Try Log-in
After enabling 2-step authentication by email, when you log in, you will be redirected to the confirmation code input screen.
When you log in, the following email will be sent to the email address registered in your user information.
```
<Subject>
Pleasanter authentication code
<From>
"Pleasanter.org" <support@pleasanter.org>
<Main Message>
Use the following code as the Pleasanter authentication code.
Authentication code: 69231688
Thank you for using Pleasanter.
```
Enter the confirmation code within the validity period of the confirmation code and login.
