Best Email Platforms for Startup Newsletters in 2026

For most startup newsletters under 10,000 subscribers, Kit is the cheapest serious choice. Its free plan covers up to 10,000 subscribers and includes unlimited email broadcasts, landing pages, forms and audience tagging, so a founder can send every issue without paying anything. The first paid step is the Creator plan at $33 a month billed annually, which adds visual automations and email sequences. That is the only upgrade most newsletters need before they start to care about onboarding emails.

The rest of this guide explains where that answer changes. Cost depends on two meters that are easy to confuse: how many people are on your list, and how many emails you send. Some vendors charge by subscribers or contacts, some by profiles, and some by monthly send volume. A newsletter that sends weekly to a list of 5,000 costs something very different on a per-send plan than on a per-subscriber plan. Work out both numbers before you choose.

What a startup newsletter actually costs at three list sizes

The table below shows the cheapest plan that covers each list size, using the monthly prices on each vendor's pricing page. It assumes one issue a week, so four sends per subscriber per month. Those four sends are the figure used for the per-send vendors. If you send twice a week, double the send count and recheck the tier, because that changes the answer for Brevo.

Where a vendor does not publish a price for the list size, the table says "pricing on request" rather than estimating. A blank cell does not mean the tool is expensive. It means the number is not on the public pricing page for that size, and you should ask the vendor before you plan a budget around it.

Brevo's arithmetic is tied to monthly sends: a 1,000-subscriber list sent weekly is about 4,000 emails a month, which fits its $9 Starter tier that begins at 5,000 emails. A 5,000-subscriber list sent weekly reaches about 20,000 emails, so ask for the tier that covers that volume before you plan the budget.

Kit: the free newsletter plan that keeps working

Kit suits a founder who wants a publication before a product. The Free plan includes unlimited email broadcasts, landing pages and forms, tagging and segmentation, and the ability to sell digital products and subscriptions, all for up to 10,000 subscribers. For a weekly newsletter that is the longest free stretch of any platform in this guide. Tags let you separate readers who want product updates from readers who only want essays, which matters once a startup starts mixing founder notes with release news.

The limitation is automation. Visual Automations and email sequences start on the Creator plan at $33 a month billed annually. Creator also adds A/B testing for subject lines and removes Kit branding. Pro, at $66 a month billed annually, adds Subscriber Signals, unlimited users, deliverability reporting and a newsletter referral system. A solo founder can stay on Free for a long time. A team that wants onboarding sequences will pay for Creator early.

Price: Free up to 10,000 subscribers; Creator $33/mo billed annually; Pro $66/mo billed annually. Paid plans carry a 14-day free trial with no credit card required. See the Kit pricing page.

MailerLite: the lean start with a visible ceiling

MailerLite is a sensible choice for a newsletter that is only starting to gather subscribers. The Free plan allows up to 250 subscribers and 2,500 emails a month, which is enough to test a format, a sign-up form and a first series of issues. Its editor is straightforward, so the time goes into writing rather than building layouts. For a founder who writes long essays once a month, that tradeoff is often right.

The ceiling arrives fast. A list that passes 250 subscribers has to move to a paid plan. Comfort starts at $12 a month billed monthly, or $10.80 a month billed annually, for the 500-subscriber tier, and its monthly email allowance is ten times the subscriber ceiling. Power starts at $25 a month, or $22.50 a month billed annually, with unlimited monthly emails. The published prices stop at the 500-subscriber tier here, so a newsletter at 1,000 or 5,000 subscribers should get a quote before committing.

Price: Free up to 250 subscribers; Comfort from $12/mo monthly or $10.80/mo billed annually (500-subscriber tier); Power from $25/mo monthly or $22.50/mo billed annually. Details are on the MailerLite pricing page.

beehiiv: publication-first, with a steep subscriber curve

beehiiv is built around the newsletter as a publication. The Free plan covers up to 2,500 subscribers with unlimited sends and one publication, which makes it a good fit for a founder whose newsletter is the product: essays, a paid tier and audience growth matter more than triggered product email. Lite adds paid subscriptions, automations and audience polls. Pro adds advanced analytics and priority support.

The weakness for startups is cost at scale and the lack of product lifecycle as a focus. Lite is listed at $49 a month for up to 100,000 subscribers, but the subscriber-tier prices that matter at a newsletter's early growth stage are higher: $109 a month at 5,000 subscribers ($95 billed yearly) and $139 a month at 10,000 ($119 billed yearly). A startup that wants billing reminders and onboarding flows will need another tool beside beehiiv, and that second tool adds its own cost.

Price: Free up to 2,500 subscribers; Lite from $49/mo for up to 100,000 subscribers (5,000 and 10,000 subscriber tiers as above); Pro from $95/mo. Yearly billing saves up to 20 percent. See the beehiiv pricing page.

Brevo: cheap when volume is low, billed on sends

Brevo is the lowest-cost route for a newsletter that also needs SMS or other channels later. The Free plan allows 300 email sends a day and storage for up to 100,000 contacts. Starter at $9 a month starts at 5,000 emails a month with no daily sending limit, and Standard at $18 a month adds automation, A/B testing and advanced reports. For a small weekly list, the bill stays very low.

The catch is that Brevo prices by monthly email volume, not by contacts. A newsletter that adds subscribers every month will move up through send tiers without changing its cadence, so the plan must be checked against sends at the start of each billing cycle. The volume tier for a 5,000-subscriber weekly list is not published in the figures used here, so that cost should be confirmed directly with Brevo.

Price: Free with 300 email sends a day; Starter from $9/mo at 5,000 emails a month; Standard from $18/mo with automation and A/B testing. The Brevo pricing page shows the volume options.

Loops: built for early-stage SaaS updates

Loops is written for product teams that send updates, changelogs and onboarding notes to a small audience, which describes many early-stage SaaS newsletters. The Early Stage plan is free for up to 4,000 sends in any rolling 30-day period to your 1,000 newest contacts, with all features included and a limit of 10 emails per second. That covers a weekly issue to 1,000 readers exactly, which is why it suits a product launch list.

The limits are visible. Once the list or the send count goes beyond the free allowance, the Growing Audience plan at $99 a month applies, with unlimited sends to subscribers and transactional sends to users outside the audience. The free plan also adds a Loops footer to emails. A founder who wants a brand-free newsletter at a larger size should plan for the $99 step.

Price: Early Stage free (up to 4,000 sends in a rolling 30 days); Growing Audience $99/mo. See the Loops pricing page.

Customer.io: lifecycle mail that starts from events

Customer.io is the strongest option in this list when the newsletter is only one part of what a SaaS sends. Its Essentials plan at $100 a month billed monthly includes a visual workflow builder, basic data integrations and AI Agent core skills. Usage-based tiers scale by profile count; the Essentials plan at 10,000 profiles is $145 a month, at 20,000 it is $235, and at 50,000 or more it is shown from $505 a month. Premium is priced by custom profile volume.

For an eligible early-stage company, the Startup Program offers 12 months free. Eligibility depends on having raised under $10 million, so check the terms before you plan around it. The tradeoff is focus. Customer.io is strongest at behavior-triggered messages, such as a trial reminder after a user stops using a feature. A founder whose main job is a weekly essay will spend more time in workflows than in the issue editor.

Price: Essentials $100/mo billed monthly; Essentials at 10,000 profiles $145/mo; Premium on request. Eligible startups can get 12 months free through the Startup Program. See the Customer.io pricing page.