郵件主旨行評測器

根據潛在開信率為郵件主旨行打分。檢查長度、垃圾郵件觸發詞和急迫感標記。

如何使用本工具

1
Type or paste your subject line into the input box.
2
Read the 0-100 score that appears instantly as you type.
3
Review the checklist below it for length, all-caps, punctuation, and matched spam words.
4
Edit the wording and watch the score update live until you are happy.

郵件主旨行決定了開信率。最佳實務包括：30-50個字元（適配行動裝置顯示）、避開垃圾郵件觸發詞（免費、！！！、全大寫）、加入個人化標記，以及在不淪為標題黨的前提下營造好奇心。本工具會根據這些規律來打分。

Quickly sanity-checking a newsletter subject before scheduling a campaign in Mailchimp or Klaviyo.
Trimming a subject line down to fit the roughly 30-50 character mobile preview window.
Catching an accidental ALL-CAPS subject that slipped in from a copied headline.
Spotting leftover '!!!' or '???' before a marketing blast goes out.
Teaching a junior marketer why words like 'FREE' and 'ACT NOW' have a spammy reputation.
A/B brainstorming two subject variants side by side to see which scores cleaner.

主旨行的理想長度是多少？▼

30-50個字元可適配桌面端和行動端的預覽。更長的主旨行會被截斷；過短的則可能效果更差。

哪些詞會觸發垃圾郵件過濾器？▼

免費、保證、立即行動、$$$、全大寫以及過多的標點。現代的過濾器更聰明了，但這些老舊的觸發詞仍會帶來損害。