
Swapstack
Paved
LetterWell
Instaaa
LetterHunt
PEAR
Passionfroot Discovery
Hecto
Markdrop
BugHerd
Pastel
Webvizio
Swapstack is the self-serve newsletter marketing platform that lets you sponsor countless independent newsletters (like Flipboard) without the added stress of emails and logistics.
Choose between a CPA or PPC model and work with up to 1,000 publishers at once! Plus, enjoy a streamlined sponsorship process that eliminates back-and-forth with the publisher, making it a win/win for both sides and getting your sponsorships out in the world with minimal turnaround time.
For brands, Swapstack makes it easy to create custom sponsorships and connect with publishers via a simple chat box. And for publishers, Swapstack lets you monetize your work and connect with sponsors, whether you're looking for immediate opportunities via the affiliate network, the PPC tool or more bespoke arrangements, Swapstack facilitates it all.
Sponsorships can either be one-off, recurring or always on depending on the approach you take. For maximum exposure, a combination of CPA and PPC tools are recommended!
With 60 million audiences and 1,000+ publishers, Swapstack's innovative ad-tech is a win-win for everyone!
Pricing: Swapstack operates on a paid-first policy so while it's free to browse, any sponsorships that happen will incur a small %-based fee of the final spend.
Swapstack
MarkdropMarkdrop's answer:
Markdrop combines powerful visual feedback, screen recording, and developer-ready bug reporting into a single, lightweight tool that feels invisible until you need it. Unlike bloated alternatives, Markdrop is fast, easy to integrate, and built for modern teams who care about speed and clarity with no Chrome extension or signup friction required.
Markdrop's answer:
Affordable, transparent pricing: Markdrop offers all the core features at a fraction of the cost of tools like Markup.io or Pastel.
Designed for devs and designers: Every comment can include logs, screen recordings, and environment data ready for developers to act on.
No friction for users: Share a link and anyone can leave feedback. No browser extensions, no accounts, no hassle.
Fast and privacy-respecting: Lightweight script, GDPR-compliant, and zero tracking bloat.
All-in-one: Combines comments, annotations, bug reporting, and async video so teams donโt need 3 different tools.
Markdrop's answer:
Markdrop is built for:
Founders and indie builders who want fast feedback without complex tools
Designers and PMs collecting client or stakeholder feedback
Developers who want bug reports with context, not vague screenshots
Agencies delivering websites and apps that need client review In short, itโs for lean product teams who value clarity and speed.
Markdrop's answer:
Markdrop was born out of frustration. As a solo founder building multiple products, I (Manuel) kept running into the same feedback pain, long email chains, vague bug reports, and overpriced tools that did too much or too little. So I built what I needed: a clean, no-fuss tool to drop comments directly on a site, see what users saw, and get back to shipping.
Markdrop's answer:
Which are the primary technologies used for building your product?
Frontend: Svelte 5 Backend: Cloudflare Workers, D1, and Durable Objects Database: Wrangler DB (D1) DevOps/Infra: Cloudflare Pages + R2 for static assets and file storage
Markdrop's answer:
Indie founders using Markdrop to launch and iterate faster
Agencies working with clients.
YC applicants using it to get fast design review
No-code builders collecting client feedback inside Webflow
Internal product teams replacing Slack screenshots with structured feedback
Based on our record, Swapstack seems to be more popular. It has been mentiond 6 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Go to swapstack.co and make an ad posting there with correct details about your newsletter. Source: about 4 years ago
๐ก Top tip: Check out marketplaces that are trying to make the process of newsletter advertising more transparent. The top three are Swapstack, Paved, and Hecto. Source: over 4 years ago
I use https://swapstack.co/ for Sponsorships. Source: over 4 years ago
I recommend using something like Swapstack (https://swapstack.co/) to get infront of the targeted audience instead of Google Ads. They also have Plug & Play feature where you have to only pay the writer for the clicks and conversions they got for you. Highly recommend that! Source: almost 5 years ago
Two-sided marketplace built on Bubble: https://swapstack.co/. Source: almost 5 years ago
Paved - Email marketing and sponsored content, simplified. Close more sponsorship deals or reach targeted, engaged audiences. Discover the Paved difference.
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Webvizio - This free website feedback tool & website review software allows managers and teams to collaborate on website revisions in real time. Join for free now!