The Best Radar Lab by Partnership Intel Alternatives

EmailNewsletter-ad

A performance ad network for email newsletters, built for both sides of the placement. Publishers browse vetted offers ranked by EPC and payout, paste in ready-made creative with tracking links already built, and get paid monthly by Stripe or ACH. Advertisers set a target CPC and budget, and the matching algorithm places the offer with the best-fit newsletters, then shifts spend toward what converts. Performance pricing throughout, with real-time publisher-level reporting.

Seline Analytics

Seline's cherry-picked toolkit is similar to Google Analytics, but real-time, simple, privacy-first, and designed for daily use. Including an intuitive all-in-one dashboard, packaged with visitor journey insights and funnels on top of it.

Book a Sponsor

Paste your newsletter URL and Book a Sponsor lists the brands that sponsored similar newsletters, finds who buys the ads and drafts the pitch. It emails those brands every day from its own domains and introduces you when one replies. $20 in free credits, then 10¢ per email. No commission.

NewsletterFit

NewsletterFit is a free decision tool for creators comparing newsletter platforms such as Beehiiv, Substack, Kit, Ghost, MailerLite and GetResponse. Compare estimated costs, transaction fees, monetization models and features based on your audience and paid subscribers. It also includes detailed platform comparisons, break-even examples and a Substack Fee Calculator.

Quibr

Quibr is an AI social media agent for newsletter creators. When a new edition goes out, it writes posts for X, LinkedIn, Threads and Facebook from it, in your own voice, spreads them across the week and publishes them. Approve every post, step in during an approval window, or let it run on its own. Works with beehiiv, Substack, Ghost, Kit, Mailchimp and any RSS feed. $29 a month, with a seven-day free trial. Formerly Letterly.

Relnk

Relnk is a writing studio for people who publish a newsletter or blog. You do the writing. AI is on call when you want it: angles for an idea, an outline, a first pass at a draft, or a review against your own voice. A board takes each piece from idea to published. Brand voices come from your tone and writing samples, and Relnk drafts social posts from each published piece. Free plan, plus a 7 day Writer trial with no card.

InboxReads Pro

InboxReads Pro gives you access to a database of 6000+ email newsletters for outreach, cross-promotions, and sponsorship opportunities. You get access to newsletter subscriber counts, open & click rates, growth charts, issue counts, launch dates, topic popularity, and more. Plus direct messaging to newsletter creators to set up partnerships.