Frequently asked questions
Extended answers for researchers, operators, brands and agencies. For a quick overview, see theFAQ on our homepage. Plan details are on the pricing page.
Product & positioning
What problem does NewsletterFIT solve?
Newsletters hold a large share of expert writing, but it is scattered across thousands of publications. NewsletterFIT indexes public posts and connects them to the companies, people, topics, guests and sponsors they mention. You can find who covers a subject, see what is gaining momentum, and follow changes without reading hundreds of newsletters by hand.
How is this different from newsletter directories or marketplaces?
Directories list publications. Marketplaces sell placements. NewsletterFIT is a research tool that lets you search, investigate and monitor. Sponsorship research is one use among several, alongside competitive monitoring, market research and PR. We are not a broker and do not take placement fees.
Data & methodology
Where does the data come from?
Publicly available newsletter content and metadata: publication pages, public archives and feeds, and public platform signals, today mainly from Substack and Beehiiv. We respect each source's robots rules and terms, and we don't access paywalled or private content. Automated pipelines normalize articles, extract topics, entities and sponsor mentions, and compute corpus-level signals such as momentum. The methodology page defines every data label.
How fresh is the data?
Active publications are refreshed on a rolling schedule. Topic, entity and sponsor extraction can lag ingestion by hours to days, depending on queue load. Dates are shown on articles and signals so you can judge recency before acting on them.
Do you have private publisher metrics (open rates, CTR, pricing)?
No. Subscriber figures come only from what a platform shows publicly, often as rounded ranges. When there is no public figure we show a dash rather than an estimate. Audience descriptions are inferred from content and labelled as likely audience, not verified demographics. Confirm rates, demographics and performance directly with publishers.
How are sponsors detected?
Our enrichment models flag sponsor mentions in article text and aggregate which brands appear across recent issues. This shows category fit and competitive activity. It does not replace talking to publishers about inventory and pricing.
Trial, plans & billing
How does the trial work?
Every new account gets 7 days of Pro, with no card required. Continue on Pro, Intelligence, or Enterprise from the pricing page.
How do I cancel or change plans?
In the app, open Billing and choose Manage subscription. That opens Paddle's customer portal, where you can switch plans, update your card, download invoices or cancel. Cancellation takes effect at the end of the current billing period.
Do you offer team or agency plans?
Plans are per account today. For multi-seat or agency rollouts, emailsupport@newsletterfit.com with your use case.
Security & privacy
What security measures do you use?
We run on dedicated servers with HTTPS everywhere, access controls and least-privilege credentials. Application data is stored in MongoDB with regular backups. Payments are processed by Paddle, our merchant of record; we never see or store card numbers. Account data is handled according to ourPrivacy Policy.
Integrations & roadmap
What integrations exist today?
The web app, watchlists saved to your account, and email alerts with daily or hourly digests depending on plan. Enterprise includes a JSON export of the last 14 days of publications, articles, entities, and the links between them. CSV, CRM, Slack, and team workspaces are not available yet.
Can we request specific newsletters or categories?
Yes. If a public publication is missing, email us its URL and we will prioritize ingesting it.
Still have questions?
Email support@newsletterfit.com orstart your 7-day Pro trial.