マーケティング

メール件名テスター

メール件名とプレヘッダーを各種メールサービス風にプレビューして確認します。

多くのツールは端末内で動作します。背景除去と文書の Markdown 変換はサーバーに送信し、処理後に削除します。

使い方

  1. Enter a subject, preheader and sender name.
  2. Turn on A/B mode to compare a second subject and preheader side by side.
  3. Review the content check score and warnings, then copy a final subject.

おすすめの用途

  • Newsletter drafting
  • A/B test planning
  • Pre-send content review

注意点

The score is a content check score, not a deliverability score. Sensitive words are reminders only and cannot predict spam placement.

よくある質問

Does the score predict deliverability?

No. It only summarizes local content heuristics and is not a deliverability score.

How many emoji are too many?

The reminder appears after several emoji; use your audience and brand voice as the final guide.

Are my subjects stored?

No. All checks and previews run locally in this browser.

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