Subject Line

Developer: Worldata Infocenter, Inc.

Category: Business

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350 installs

7.00 ratings

51 monthly active users

Revenue not available

Subject Line Summary

Subject Line is a mobile iOS app in Business by Worldata Infocenter, Inc.. Released in May 2012 (13 years ago). It has 7.00 ratings with a 4.57★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 51 monthly active users . Store metadata: updated Jan 25, 2021.

Store info: Last updated on App Store on Jan 25, 2021 .

SDKs, Trackers & Permissions

App not yet scanned for SDKs.

App Details

Store ID: 529276278

First Released: 2012-05-29

Store Last Updated: 2021-01-25

In-App Purchases: No

Ads: No

Website: subjectline.com

App Store

Crawl Status: Success

AppGoblin First Crawled: 2021-02-06

AppGoblin Last Crawled: 2026-03-12

Ads & App-Ads.txt

App does not have ads.

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4.57★

Ratings: 7.00

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Screenshots

App Description

SubjectLine.com, the #1 ranked free email subject line grading tool, has exceeded 10 million subject lines tested. The free online marketing support tool includes over 900 unique rules that are applied throughout the subject line testing process. Marketers have the ability, for free, to test any subject line for possible deliverability and marketability issues that could impact overall campaign results.