redmineのメール通知機能をカスタマイズする方法をメモします。

優先度が最も高いチケットのみメールする

(旧)

models/issue.rb

  # Returns the users that should be notified
  def notified_users
    ...省略...
    notified += project.notified_users
    notified += project.users.preload(:preference).select(&:notify_about_high_priority_issues?) if priority.high?
    notified.uniq!
    ...省略...
  end

models/issue_priority.rb

  def high?
    position > self.class.default_or_middle.position
  end

views/users/_mail_notifications.html.erb

<% if IssuePriority.default_or_middle and high_priority = IssuePriority.where(['position > ?', IssuePriority.default_or_middle.position]).first %>
<p>
  <%= pref_fields.check_box :notify_about_high_priority_issues %>
  <label for="pref_notify_about_high_priority_issues"><%= t(:label_user_mail_notify_about_high_priority_issues_html, prio: high_priority.name.downcase) %></label>
</p>
<% end %>

(新)

models/issue.rb

  # Returns the users that should be notified
  def notified_users
    ...省略...
    notified += project.notified_users
    notified += project.users.preload(:preference).select(&:notify_about_high_priority_issues?) if priority.highest?
    notified.uniq!
    ...省略...
  end

models/issue_priority.rb

  def high?
    position > self.class.default_or_middle.position
  end

  def highest?
    position_name == "highest"
  end

views/users/_mail_notifications.html.erb

<% if IssuePriority.default_or_middle and highest_priority = IssuePriority.where(['position_name = ?', 'highest']).first %>
<p>
  <%= pref_fields.check_box :notify_about_high_priority_issues %>
  <label for="pref_notify_about_high_priority_issues"><%= t(:label_user_mail_notify_about_high_priority_issues_html, prio: highest_priority.name.downcase) %></label>
</p>
<% end %>

メールのタイトルにサーバ名を常に表示する

(旧)

models/mailer.rb

  def issue_add(user, issue)
    ...省略...
    subject = "[#{issue.project.name} - #{issue.tracker.name} ##{issue.id}]"
    subject += " (#{issue.status.name})" if Setting.show_status_changes_in_mail_subject?
    subject += " #{issue.subject}"
    mail :to => user,
      :subject => subject
  end

(新)

models/mailer.rb

  def issue_add(user, issue)
    ...省略...
    subject = "[#{Setting.host_name} #{issue.project.name}] "
    subject += "#{issue.tracker.name} ##{issue.id}"
    subject += " (#{issue.status.name})" if Setting.show_status_changes_in_mail_subject?
    subject += " #{issue.subject}"
    mail :to => user,
      :subject => subject
  end

いろいろな場所にこの設定ありますので，ソース見て適宜書き換えをお願いします。

メールの送信アドレスをチケット更新者にする

smtpサーバに認証がかかっている場合は，サーバ側で上書きされるため上手くいかない可能性があります。サーバ再起動後，送信されるメールが， 送信アドレスと表示名があっている ことを確認お願いします。

ドラフト版でばgmailは無理と記載しておりましたが，以下のように' <' + @author.mail + '>'と半角スペースはさむことで送信アドレス表示できるようになりました。

(旧)

models/mailer.rb

def mail(headers={}, &block)
    # Add a display name to the From field if Setting.mail_from does not
    # include it
    begin
      mail_from = Mail::Address.new(Setting.mail_from)
      if mail_from.display_name.blank? && mail_from.comments.blank?
        mail_from.display_name =
          @author&.logged? ? @author.name : Setting.app_title
      end
      from = mail_from.format
      list_id = "<#{mail_from.address.to_s.tr('@', '.')}>"
    rescue Mail::Field::IncompleteParseError
      ...省略...
    end

(新)

models/mailer.rb

def mail(headers={}, &block)
    # Add a display name to the From field if Setting.mail_from does not
    # include it
    begin
      mail_from = Mail::Address.new(Setting.mail_from)
      if mail_from.display_name.blank? && mail_from.comments.blank?
        if @author&.logged?
          mail_from.display_name = @author.name

          # Add author address 20201205
          from = @author.name + ' <' + @author.mail + '>'
        else
          mail_from.display_name = Setting.app_title
          from = mail_from.format
        end
      else
        from = mail_from.format
      end
      list_id = "<#{mail_from.address.to_s.tr('@', '.')}>"
    rescue Mail::Field::IncompleteParseError
      ...省略...
    end

環境

redmica 1.2 (redmine 4.2相当)