Best Email Marketing Platforms for a Company of One (2026)

Every other audience you build is rented. The algorithm decides who sees your posts; the platform can change the rules, shadow-ban your niche or die entirely — and your followers were never portable anyway. An email list is different: it's a file of people who said yes to hearing from you, and it moves with you to any platform, forever. That's why "start the newsletter" appears in nearly every guide on this site — it's the one marketing asset a company of one genuinely owns.

The good news is that the platform choice is lower-stakes than the comparison industry implies — every tool below sends reliable email. The differences that matter to a solo operator are three: how pricing scales with your list, whether the platform matches your business model, and how much machinery you'll actually use.

The quick comparison

Pricing moves constantly and every platform tiers by features as well as list size — treat these as the market's shape and check current numbers.

The picks, honestly

MailerLite — the default for most solo businesses

The consistent verdict across years of comparisons, and ours: MailerLite delivers the most platform per pound. Clean editor, proper automations, landing pages and forms included, sane pricing that stays sane as your list grows, and support that answers. Its free tier is small, but the paid entry (~$12/month) undercuts nearly everyone. If your newsletter supports your business — a freelancer's monthly note, a consultancy's tips list — rather than being the business, start here and stop reading.

Kit — for creators with something to sell

Kit (ConvertKit, rebranded) built its product around the creator-selling-things model: tagging subscribers by behaviour, automation funnels for launches, built-in digital product and "tip jar" commerce, and a recommendations network that helps lists grow. Its free tier is now remarkably generous — up to around 10,000 subscribers, with paid features held back — which makes it the cheapest serious way to start. The paid tiers cost more than MailerLite for the same list size; you're paying for the funnel machinery, so choose Kit only if you'll use it: courses, ebooks, coaching, launches.

Beehiiv — when the newsletter is the business

Beehiiv is built for the Morning-Brew model: the newsletter itself as a media product, monetised through its built-in ad network, paid subscriptions and a referral program that turns readers into recruiters. Web-first publishing, growth analytics, cross-promotion tools — it's a publishing company in a box, and past the free tier it's priced accordingly. If you're building "a newsletter people subscribe to," this is the specialist tool. If email is just how you talk to customers, it's machinery you'll never switch on.

Brevo — the pricing-model outlier

Brevo charges by emails sent, not subscribers held — the mirror image of everyone else. That makes it the value pick for the under-served case of a big list you email rarely (a client base you contact monthly, an annual-launch business). It's a broader marketing suite (SMS, basic CRM, transactional email) than a focused newsletter tool, and the editor shows it. Right tool for the right cost structure.

Mailchimp — the familiar name, with caveats

Mailchimp remains the name your accountant has heard of, with the deepest e-commerce integrations. But its pricing has climbed for years, the once-famous free tier has shrivelled, and the product now aims at marketing teams rather than solo operators — most of what you'd pay for is features you won't touch. We'd start elsewhere; stay if you're already comfortable there and the bill hasn't annoyed you yet.

The trap: list-size pricing plus digital hoarding

Almost every platform charges by subscriber count — including the ones who never open anything. The result is a slow tax that most solo operators pay for years: a list one-third full of dead addresses, billed monthly at live-subscriber rates. Two habits fix it: run a re-engagement-then-prune pass every six months (platforms automate this), and treat unsubscribes as free list hygiene rather than rejection. A 2,000-person list with 50% open rates beats a 10,000-person mausoleum on every metric that pays — including your invoice.

Whatever you pick, do these four things

1. One welcome email, automated, today. It gets triple the open rate of anything else you'll ever send. Say who you are, what's coming, and one useful thing.
2. A signup form anywhere you have traffic — your site (see landing pages), your email signature, your invoices. Growth is mostly placement, not tactics.
3. Pick a cadence you can sustain on your worst week — fortnightly kept beats weekly abandoned, and your early subscribers care about consistency more than frequency.
4. Own your export. Download your list quarterly. The whole point of email is that the audience is yours — make that literally true on your hard drive.

The platform is a detail. The list is the asset. Start with the cheap tool and the first hundred real subscribers — you can change one of those later.

Frequently asked questions

What's the best free email marketing platform?

Kit's free tier is the standout in 2026 — up to roughly 10,000 subscribers with core features, unheard-of generosity in this market. Beehiiv's free tier (around 2,500 subscribers) is strong for newsletter-first businesses. MailerLite's free tier is small, but its paid entry (~$12/month) is cheap enough that "free" matters less than it seems.

What's the difference between a newsletter platform and email marketing software?

Overlapping tools, different centres of gravity. Newsletter platforms (Beehiiv, Substack) treat the publication as the product — web presence, discovery, ads, paid subscriptions. Email marketing software (MailerLite, Kit, Brevo) treats email as a channel for a business — automations, funnels, product launches. Ask whether people pay for your emails or through them.

How often should a small business send email?

The honest answer: at whatever frequency you can sustain indefinitely — consistency compounds, heroic sprints don't. Fortnightly or monthly is plenty for a business-supporting list; weekly suits content-led businesses. The only wrong cadences are "so often you're annoying" and "so rarely they forgot they subscribed."

Is it hard to switch email platforms later?

Easier than staying on the wrong one: export subscribers as CSV, import into the new platform, rebuild your handful of automations, update your signup forms. An afternoon for most solo operations. The one asset that doesn't transfer is your sending reputation warm-up — so switch during a quiet period, not mid-launch.