Discover the best newsletters to promote your business

Letter Index is a curated spreadsheet of the top email newsletters (1,600 and growing) where you can advertise your products and find new customers.

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What's inside the directory?

The directory is in Google sheet format and contains the following data for each newsletter:

Name, link, and description
Direct link to each newsletter and short description so you can filter the ones most relevant to you.
Contact details
Author name, bio, email address and Twitter(X) handle
Post frequency
Know how often a newsletter is published (daily, weekly, monthly or other) so you can target effectively.
Tags and categories
Newsletters are categorised and tagged for easy filtering and segmentation. Categories include artificial intelligence, crypto, arts, sports, health, marketing, sales, and more.

Start finding newsletter sponsorship opportunities for your business today.