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Reletter vs Sputnik Intelligence
Reletter: Find, contact and get featured in newsletters: a search, contact and monitoring tool that says it indexes 7M+ newsletters.
Sputnik Intelligence: Media monitoring for newsletters and podcasts, with transcripts and searchable data enriched with authority scores, people, topics and sponsors.
Facts about other tools come from their websites, checked in October 2026. Tools change, so check the vendor before deciding.
Disclosure. Sputnik Intelligence is our sister product. Both are made by Helpful Intelligence, and Inkling's newsletter data comes from Sputnik's corpus. Read what we say about it with that in mind.
At a glance
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
Sputnik Intelligence
Media monitoring for newsletters and podcasts, with transcripts and searchable data enriched with authority scores, people, topics and sponsors.
Best for
Teams doing brand, reputation and narrative monitoring across newsletters and podcasts, who need full-text search and alerts.
Pricing
Startup $200/month (10,000 calls, MCP, up to 20 users), Scale $400/month (50,000 calls, API and MCP, unlimited users), Enterprise from $2,500/month. 14-day trial on Startup and Scale. Monthly billing only. Checked 2026-10-27.
Strengths
- Full-text search across newsletters and podcasts
- Enrichment: people, topics, sponsors and authority scores
- Alerts and monitoring
- Web app, MCP, API and a bulk feed on Enterprise
Limits
- Higher entry price than Inkling ($200 against $79)
- Built for monitoring rather than reading newsletter archives
- Monthly billing only
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 Reletter is best for
Teams doing sponsorship discovery, cross-promotion, newsletter PR and keyword alerts, who need subscriber counts and contacts.
Who Sputnik Intelligence is best for
Teams doing brand, reputation and narrative monitoring across newsletters and podcasts, who need full-text search and alerts.
A third option: Inkling
Inkling is for people who want to read, or give an AI agent, the issues of newsletters they do not subscribe to: nearly 18,000 public newsletters and nearly 2 million issues, readable in a web app and over MCP. You find newsletters by name; there is no full-text search across issue text yet. See Inkling vs Reletter, Inkling vs Sputnik Intelligence or all comparisons.
FAQ
Common questions
What is the difference between Reletter and Sputnik Intelligence?
Reletter: Find, contact and get featured in newsletters: a search, contact and monitoring tool that says it indexes 7M+ newsletters. Sputnik Intelligence: Media monitoring for newsletters and podcasts, with transcripts and searchable data enriched with authority scores, people, topics and sponsors.
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.
How much does Sputnik Intelligence cost?
Startup $200/month (10,000 calls, MCP, up to 20 users), Scale $400/month (50,000 calls, API and MCP, unlimited users), Enterprise from $2,500/month. 14-day trial on Startup and Scale. Monthly billing only. Checked 2026-10-27.
Who is Reletter best for?
Teams doing sponsorship discovery, cross-promotion, newsletter PR and keyword alerts, who need subscriber counts and contacts.
Who is Sputnik Intelligence best for?
Teams doing brand, reputation and narrative monitoring across newsletters and podcasts, who need full-text search and alerts.
Is Sputnik Intelligence related to Inkling?
Sputnik Intelligence is our sister product. Both are made by Helpful Intelligence, and Inkling's newsletter data comes from Sputnik's corpus. Read what we say about it with that in mind.
Give your agent the newsletters.
Inkling is in early access. Ask for access and we will get you in.