價格：免費
更新日期：2017-03-14
檔案大小：60.2 MB
目前版本：3.56
版本需求：需要 iOS 7.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：俄文, 義大利文, 英語, 葡萄牙文
The #1 FREE subject line rating tool that allows marketers to test any subject line for possible deliverability and marketability issues. Provides marketing-related suggestions based on results that can improve overall open rates on emails sent. Results from this tool are based on 3 billion+ email messages that have been sent and tracked via SubjectLine.com's partners and clients.
支援平台：iPhone