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Inkling vs Reletter
Inkling: The issues of nearly 18,000 public newsletters (nearly 2 million issues, back to 2000), readable in a web app and by your own AI agent over MCP.
Reletter: Find, contact and get featured in newsletters: a search, contact and monitoring tool that says it indexes 7M+ newsletters.
We make Inkling, so we are biased. Facts about other tools come from their websites, checked in October 2026. Tools change, so check the vendor before deciding.
At a glance
Inkling
The issues of nearly 18,000 public newsletters (nearly 2 million issues, back to 2000), readable in a web app and by your own AI agent over MCP.
Best for
People who want to read, or give an AI agent, the back catalogue of newsletters they do not subscribe to: agent builders, analysts and researchers following a space.
Pricing
$79 per month (regular $99), $199 or $399 per month by number of users and issues fetched by your agent. 15-day free trial when access opens. Prices include VAT.
Strengths
- Issues of nearly 18,000 public newsletters, back to 2000, updated hourly
- Every issue as markdown with YAML frontmatter, over MCP, for Claude, Codex and any MCP client
- A web app to search newsletters by name, page through them and read every issue with the arrow keys
- Published prices, one product, no sales call
Limits
- No full-text search across issue text yet: you find newsletters by name
- No subscriber counts, contact details or keyword alerts
- Free and public content only: paywalled posts appear as their free preview
- A smaller index than the biggest newsletter databases, and access is closed while it is new
Reletter
Find, contact and get featured in newsletters: a search, contact and monitoring tool that says it indexes 7M+ newsletters.
Best for
Teams doing sponsorship discovery, cross-promotion, newsletter PR and keyword alerts, who need subscriber counts and contacts.
Pricing
Light $49/month (1 user, 100 searches), Standard $99 (5 users, 500 searches, 50 alerts), Business $199 (10 users, unlimited searches, 100 alerts), API add-on $59 for 5,000 requests. 7-day free trial. Checked 2026-10-27.
Strengths
- Much larger stated index (7M+ newsletters)
- Alerts and keyword monitoring
- Subscriber counts, rankings and contacts
- Cheaper entry price, plus an API and an MCP endpoint already
- Named customers on its homepage
Limits
- Positioned around sponsorship and PR discovery rather than reading archives
- Whether it offers a reading experience for whole archives is not shown on the pages we read
- Searches are capped by plan, and the API is a paid add-on
Prices checked October 2026. Prices marked unverified come from third-party sources or could not be confirmed on the vendor's site.
Which one fits you?
Who Inkling is best for
People who want to read, or give an AI agent, the back catalogue of newsletters they do not subscribe to: agent builders, analysts and researchers following a space.
Who Reletter is best for
Teams doing sponsorship discovery, cross-promotion, newsletter PR and keyword alerts, who need subscriber counts and contacts.
Using both
These tools are not always alternatives. Reletter may fit one job (for example, your own subscriptions or monitoring) while Inkling gives you and your agent the archives of newsletters you do not subscribe to.
FAQ
Common questions
What is the difference between Inkling and Reletter?
Inkling: The issues of nearly 18,000 public newsletters (nearly 2 million issues, back to 2000), readable in a web app and by your own AI agent over MCP. Reletter: Find, contact and get featured in newsletters: a search, contact and monitoring tool that says it indexes 7M+ newsletters.
How much does Inkling cost?
$79 per month (regular $99), $199 or $399 per month by number of users and issues fetched by your agent. 15-day free trial when access opens. Prices include VAT.
How much does Reletter cost?
Light $49/month (1 user, 100 searches), Standard $99 (5 users, 500 searches, 50 alerts), Business $199 (10 users, unlimited searches, 100 alerts), API add-on $59 for 5,000 requests. 7-day free trial. Checked 2026-10-27.
Who is Inkling best for?
People who want to read, or give an AI agent, the back catalogue of newsletters they do not subscribe to: agent builders, analysts and researchers following a space.
Who is Reletter best for?
Teams doing sponsorship discovery, cross-promotion, newsletter PR and keyword alerts, who need subscriber counts and contacts.
Give your agent the newsletters.
Inkling is in early access. Ask for access and we will get you in.