WP Mail Tester

I wrote a development-use handy plugin for repeated test of sending mail function of WordPress, i.e. wp_mail(). You can directly specify four parameter values for wp_mail(), To, Subject, Message Body and Headers and send it in control panel.

Download and Installation

  1. Download zip file and unzip it.
  2. Upload wp-mail-tester.php to the plugins directory.
  3. Activate WP Mail Tester.


Open admin menu [Manage] – [WP Mail Tester], input the fields and click Send.

This is only for development-use. Do not use it as an usual mailer.


WordPress のメール送信関数(wp_mail())を繰り返しテストする際に便利な開発用途専用のプラグインを作成したので公開します。これを使うことで管理画面から wp_mail() の引数(送信先、件名、本文、追加のヘッダ)を直接指定して送信することができます。


  1. zip ファイルをダウンロードして展開します。
  2. wp-mail-tester.php をプラグインのディレクトリにアップロードします。
  3. WP Mail Tester を有効化して完了。


管理画面から [Manage] – [WP Mail Tester] のメニューを開き、各項目に適宜入力して Send をクリックするとメールが送信されます。


One thought on “WP Mail Tester

  1. Hi,
    I installed and tried your plugin on my local copy of WordPress 2.8.4. When I filled out the information and hit the send button, here’s the message that I received:

    “You do not have sufficient permissions to access this page.”

    Am I doing something wrong? How can I correct this? Does this let me test the mail() functionality without connecting to the internet?

    Your reply in this regard is appreciated.

    Thank you.

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