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Subject Line

SubjectLine.com has become the industry’s leading email marketing resource. The site includes major marketing related news items, best practices and a free subject line rating tool that allows marketers to test any subject line for possible deliverability and marketability issues.

The tool scans for over 800 unique rules that could impact a marketer’s email open rates and deliverability. Results provide marketing-related suggestions that are based on 6 billion+ email messages checked, improving marketers overall campaigns. These results enable marketers to acquire new customers utilizing the best permission email data available, improve email customer data hygiene and depth and provide strategic consulting services for both retention and acquisition email efforts.

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Facebook Ads Library

The ad library provides advertising transparency by offering a comprehensive, searchable collection of all ads currently running from across Facebook apps and services, including Instagram.

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Google Rich Results Test

Does your page support rich results? Rich results are experiences on Google surfaces, such as Search, that go beyond the standard blue link. Rich results can include carousels, images, or other non-textual elements.

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Really Good Emails

We all know that email happens as a team of designers, developers, copywriters, and managers. Brainstorm on inspiration or upload your emails for QA using our commenting and annotation features (in beta).

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Google My Business

Stand out on Google with a free Business Profile Turn people who find you on Google Search and Maps into new customers with a free Business Profile for your storefront or service area. Personalize your profile with photos, offers, posts, and more.

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Facebook OG Sharing Debugger

Sharing Debugger lets you preview how your content will look when it's shared to Facebook and debug any issues with your Open Graph tags.

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AI Text Classifier

The AI Text Classifier is a fine-tuned GPT model that predicts how likely it is that a piece of text was generated by AI from a variety of sources, such as ChatGPT.

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