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Subject Line

By Worldata Infocenter, Inc.

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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's partners and clients.

What's New in Version 3.21

· App now applies over 800+ unique rules
· Updated rules to reflect the latest marketing research trends
· Performance results based on 'Marketability' and 'Deliverability'
· Over 3.5 Million Subject Lines checked via tool
· New features include advanced checks on forms of Urgency and Exclusivity.

iPhone Screenshot

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Customer Reviews

Nice app

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Subject Line
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  • Free
  • Category: Business
  • Updated:
  • Version: 3.21
  • Size: 30.0 MB
  • Languages: English, Italian, Portuguese, Russian
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

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