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Email provider overview

Add an email provider​

  1. Click Add and choose Email under Category.
  2. Enter Username, Password, Host, and Port for your SMTP server.
  3. Set Email Title and Email Content (templates), then save.

Email provider Email Config

SSL mode​

The SSL mode setting controls how the SMTP connection negotiates TLS:

ValueBehavior
Auto (default)Lets gomail decide based on port. Port 465 uses implicit SSL; other ports attempt STARTTLS.
EnableForces SSL/TLS on regardless of port. Use this when your server requires implicit TLS on a non-standard port.
DisableDisables SSL/TLS. Use only for servers on trusted internal networks.

Existing providers that had Disable SSL checked are treated as Disable automatically; no manual migration is needed.

Proxy​

If the Casdoor server cannot reach the SMTP server directly (e.g. Gmail from a restricted network), enable Enable proxy. Email is then sent via the SOCKS5 proxy defined in Casdoor’s config.

Email content and placeholders​

Templates support placeholders and the <reset-link> block for password reset.

PlaceholderDescription
%{'{'}user.friendlyName{'}'}User’s display or friendly name.
%sVerification code (for auth emails).
%linkPassword reset URL. Use only inside <reset-link>...</reset-link>.

To let users reset the password by clicking a link in the email:

  1. Put the link text and %link inside <reset-link> tags.
  2. The block is shown only in password-reset emails; it is removed for signup/login verification.

Plain text example:

You have requested a verification code at Casdoor. Here is your code: %s, please enter in 5 minutes. <reset-link>Or click %link to reset</reset-link>

HTML example:

<!DOCTYPE html>
<html>
<body>
    <h2>Password Reset Request</h2>
    <p>Hello %{'{'}user.friendlyName{'}'},</p>
    <p>Your verification code is: <strong>%s</strong></p>
    <p>This code will expire in 5 minutes.</p>
    <reset-link>
        <p>Alternatively, you can <a href="%link">click here to reset your password</a> directly.</p>
    </reset-link>
    <p>If you didn't request this, please ignore this email.</p>
</body>
</html>

Html template

The <reset-link> block is omitted for non–password-reset emails (signup, login verification).