Sender Index FAQ

Who is Return Path?

We’re experts in deliverability and driving results for your email marketing. Every day, our customers trust our data and insights to help them optimize their email marketing. Partnered with best-in-class email service providers, we help marketers take their email programs to the next level by driving more response and increasing revenue.

Where do you get your data?

We partner with more than 70 providers of mailbox and security solutions, covering 2.5 billion inboxes—approximately 70 percent of the worldwide total. Also feeding into this data platform is our consumer network of more than 2 million consumers around the world, delivering unparalleled insight into consumer behavior, brand affinity, and preferences.

How often is your data updated?

We update the selection of emails for Sender Index on a bi-weekly basis, showcasing over 500 emails each time the data is refreshed. When you upgrade to Inbox Insight, that data is updated on a daily basis and you’re able to browse millions of emails.

What other metrics can I see if I upgrade to Inbox Insight?

In addition to viewing the subject line, sending domain, inbox placement percentage, and spam percentage for each email, Inbox Insight will also give you access to other key data points including the friendly from, open percent, read percent, percent of list, industry, and campaign type. The Browse Campaigns tool within Inbox Insight also allows you to search for or filter emails by subject line, industry, and campaign type, and save or download your favorite emails for future reference.

How do I upgrade to Inbox Insight?

If you’re interested in taking your search to the next level and getting even more creative inspiration, request a demo to get a closer look at Inbox Insight and the full suite of Return Path products.

Want more?

Find out how Inbox Insight's competitive intelligence can help you optimize your email strategy.

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Disclaimer – Sender Index leverages Return Path’s Panel Data to sample and share with you the most inspiring email campaigns. We do not alter in any way the ownership of copyright and other rights holders of these campaigns and expect you to respect their rights. The Sender Index Site is to be used, and you are granted a limited license to access the Site, for personal, non-commercial transitory viewing only. Please make sure to read carefully our Sender Index Terms of Service and our Sender Index Privacy Policy because, by using Sender Index, you agree to them.

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