Slovo::Task::SendOnboardingEmail - Send an email with link for first time login


  # common configuration for similar Tasks in slovo.conf
  my $mail_cfg = {
    token_valid_for => 24 * 3600,
    'Net::SMTP'     => {
      new => {
        Host => '',

        #Debug          => 1,
        SSL             => 1,
        SSL_version     => 'TLSv1',
        SSL_verify_mode => 0,
        Timeout         => 60,
      auth => ['', 'Pa55w03D'],
      mail => '',

  #load the plugin via slovo.conf
  plugins => [
    {'Task::SendOnboardingEmail' => $mail_cfg},
    {'Task::SendPasswEmail'      => $mail_cfg},


This is the first Minion task implemented in Slovo.

Slovo is not integrated with any social network. A plugin for such integration can be relatively easily written and there are maybe already some Mojolicious::Plugin written. Ado had such functionality by leveraging Mojolicious::Plugin::OAuth2.

Slovo takes another approach. Its users can invite each other to join the set of sites that one Slovo instance manages. Slovo is the social network it self. We may use Mojolicious::Plugin::OAuth2::Server at some point.

A user in Slovo can create others users' accounts. Upon creation of the new user account an email is sent to the new user. In the email there is a link for the first time login for the new user. The new user follows the link and is signed in after confirming the names of the user who created his account. After that the user has to change his password to be able to sign in next time.

Slovo::Task::SendOnboardingEmail inherits Mojolicious::Plugin and implements the following functionality.


The following methods are implemented.


Reads the configuration and adds the implemented tasks to Minion.


Validates provided in slovo.conf configuration and throws a Mojo::Exception in case some values are invalid.


The following functions are implemented.


Arguments: $message, $to_user, $app

$message must be already fully prepared and looks something like:

    my $message = <<"MAIL";
  To: $to_user->{email}
  From: $CONF->{'Net::SMTP'}{mail}
  Subject: =?UTF-8?B?${\ b64_encode(encode('UTF-8', $subject), '') }?=
  Content-Type: text/plain; charset="utf-8"
  Content-Transfer-Encoding: 8bit
  Message-Id: <acc-msg-to-$to_user->{login_name}${\ time}\@$domain>
  Date: ${\ Mojo::Date->new->to_datetime }
  MIME-Version: 1.0
  ${\ encode('UTF-8', $body)}

$to_user is a hash reference containing at least $to_user->{email} and $to_user->{id}.

$app is the current Slovo instance.

This function sends the prepared message using Net::SMTP.

  $app->debug('Message to be send:' . $/ . $message);
  send_mail_by_net_smtp($message, $to_user, $app);


The following tasks are implemented.


Prepares and sends email using Net::SMTP to the newly created user. The email contains a link for the first sign in. The task is enqued upon creation of the new account. The first time sign in is implemented in "first_login_form" in Slovo::Controller::Auth and "first_login" in Slovo::Controller::Auth.


Deletes the record with the login token for the new user. The task is enqued by "mail_first_login" with delay token_valid_for as configured. Defaults to 24 hours after creation of the account.


Slovo::Controller::Auth, Slovo::Task::SendPasswEmail.