Newsletter Hub
The Newsletter Operator's Stack
Most "best newsletter tool" lists rank platforms on features you stop caring about by subscriber 500. The questions that decide your stack arrive later: the day you turn on monetization, and the day deliverability becomes the thing standing between your send and the inbox.
What changes as your newsletter grows
A newsletter at 800 subscribers and a newsletter at 12,000 are different businesses running on the same word. The platform that fits the first one rarely fits the second. The four picks below map to the moment you are in, so the tool grows with the list instead of forcing a migration the month you can least afford one.
MailerLite
Best free tier in the category. Automation, signup forms, and a landing page on the free plan. The cleanest place to send your first issue without paying.
Stage 2 · 1k–10k subsKit
Tag-based subscriber management and a creator network that drives recommendations. Where most newsletters land once segmentation starts to matter.
Newsletter-firstbeehiiv
Built by Morning Brew alumni. Paid subscriptions, an ad network, and the boosts marketplace are native, not add-ons. The primary pick for a monetization plan.
Going paidSubstack
Zero cost until you charge, then a 10% cut. Easiest on-ramp to paid subscriptions, weakest on list ownership. See the full beehiiv vs Substack comparison.
The stack by subscriber stage
The same trade-off repeats at every bracket: the platform stops being the constraint and something else takes over. Below 1,000 subscribers the constraint is having anything worth sending. Past 10,000 it is deliverability and revenue per email. The stack that fits is the one matched to the constraint you actually have.
| Stage | Stack | The constraint |
|---|---|---|
| 0–1k subs Finding the angle | MailerLite free, or Kit free to 10k | Not the tool. The constraint is consistency and a reason to subscribe. Spend the time writing, not configuring. |
| 1k–10k subs Building the habit | Kit for segmentation, or beehiiv if monetization is close | Growth and segmentation. You need referral mechanics and clean tagging before the list is large enough to slice. |
| 10k+ subs Running a business | beehiiv for native ads and paid tiers, on an authenticated sending domain | Deliverability and revenue per email. Open rate stops being trustworthy; clicks and dollars are the real scoreboard. |
How newsletters actually make money
Three revenue lines carry almost every solo newsletter, and most operators turn them on in the wrong order. Paid subscriptions are the headline. Substack passed 5M+ paid subscriptions in March 2025, against 35M+ total active subscriptions, so the paid layer sits on a much larger free base. That ratio is the business: free readers fund nothing until a small slice converts.
A 5–10% free-to-paid conversion rate is the commonly cited rule of thumb, with roughly 5% treated as solid. That figure is practitioner consensus, not measured data, and it varies widely by niche and offer. Use it to sanity-check a projection, not as a number to promise an investor. The growth is real where it has been measured: creator paid-subscription revenue on beehiiv grew 138%, from $8M in 2024 to $19M in 2025 across the platform. That is money paid to creators and a platform-wide growth rate, not a per-newsletter benchmark you should expect to hit.
Sponsorships and ads are the second line, and the one most solo operators start with because it does not require a paywall. An ad network or boosts marketplace, native on beehiiv, fills inventory without a sales process. Referral programs are the third: built-in milestone rewards turn existing subscribers into the cheapest growth channel you have. The newsletter business model guide covers the order to layer these in, and building the first 1,000 subscribers covers the audience the whole model depends on.
Deliverability is now a sender requirement
Deliverability used to be a problem you noticed after it cost you. Since 2024 it is a published rule. Gmail and Yahoo require senders of more than 5,000 messages per day to authenticate with SPF, DKIM, and DMARC and to keep spam complaints below 0.3%. A newsletter at 5,000 subscribers sending a single weekly issue clears that threshold. This is not optional configuration. Miss it and the major mailbox providers route your send to spam or reject it outright.
The cost of getting it wrong is already measurable. Global inbox placement averaged 83.5% in 2024 data published by Validity in 2025, which means roughly 1 in 6 legitimate marketing emails never reaches the inbox. A subscriber who never sees the email is indistinguishable from one who unsubscribed, except they still count against your list size and your bill.
The reporting trap compounds it. Newsletters on beehiiv averaged a 41.24% open rate in 2025, but Apple Mail accounts for about 45% of email opens and inflates that number through Mail Privacy Protection, which pre-fetches images whether or not anyone reads the email. Track clicks and revenue per email instead. A machine cannot fake those numbers for you. The Apple Mail and Gmail tabs survival guide and the deliverability tooling breakdown go deeper on both.
Go deeper
- Best newsletter platforms for 2026 (full ranking)
- beehiiv vs Substack, head to head
- Kit vs beehiiv compared
- Substack alternatives worth a switch
- Kit alternatives for solo senders
- beehiiv AI integration and the MCP layer
- Best email marketing tools, beyond newsletters
Common questions
Which platform should I start a newsletter on?
Start on MailerLite free if you want the strongest free automation, or Kit free if you expect to need tagging and segmentation early. Pick beehiiv from day one only if monetization is part of the plan within months. Below 1,000 subscribers the platform barely matters; consistency and a clear reason to subscribe matter more.
When should I turn on paid subscriptions?
Turn on paid subscriptions once you have a free readership large enough that a 5% conversion produces meaningful revenue, and a topic readers will pay to keep. Below a few thousand engaged free subscribers, a paywall splits a small audience and earns little. Build the free list first, then layer paid on top of it.
beehiiv, Substack, or Kit in one answer?
beehiiv is the newsletter-first pick with native ads, paid tiers, and referral mechanics built in. Substack is the fastest on-ramp to paid subscriptions and charges nothing until you do, then takes 10%, but list ownership is weak. Kit suits creators who run email beyond a single newsletter and want deep tagging. The beehiiv vs Substack and Kit vs beehiiv comparisons settle the edge cases.
What does a solo sender have to do for deliverability now?
Authenticate your sending domain with SPF, DKIM, and DMARC, and keep spam complaints under 0.3%. Since 2024 Gmail and Yahoo require this from anyone sending more than 5,000 messages a day, a bar most weekly newsletters cross around 5,000 subscribers. Then stop trusting open rate as your scoreboard and watch clicks and revenue per email instead.
What free-to-paid conversion rate should I expect?
A 5–10% free-to-paid conversion is the commonly cited rule of thumb, with around 5% treated as a solid result. It is practitioner consensus rather than measured data and varies widely by niche, price, and offer. Use it to sanity-check a revenue projection, not as a number to bank on.
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