Best Email Marketing Software: 7 Picks for Your List and Workflow

OSI Affiliate Reviews DeskEditorial teamUpdated 18 October 202616 min read

The problem with most email marketing shortlists is that they assume every small business sends the same kind of email. You know better. A newsletter to fans is not the same job as a welcome sequence feeding a sales team, and neither is the same as an abandoned-cart flow that has to pull product data from Shopify.

So we organized this list around the job you’re actually trying to do, not a feature count. Seven tools made it, each with a reason it earned the slot and a reason to skip it. We checked current pricing and plan limits on each vendor’s public pricing page in October 2026, but we did not run account-based send tests or measure deliverability. The numbers below are what the vendors publicly list as of that check.

OSI Affiliate original explanatory diagram: Best Email Marketing Software: 7 Picks for Your List and Workflow
Original OSI Affiliate explanatory illustration. It depicts the buying decision, not a software interface or measured product result.

If you want the short version: MailerLite is a starting point for a small-business newsletter and ordinary automations. Brevo is the one to consider when you want email plus SMS and other channels on one send-based bill. Kit belongs with creators selling to an audience. ActiveCampaign is for people who will actually build branching, behavior-based automations and have a human following up. GetResponse suits lead capture with landing pages and webinars. Klaviyo is the ecommerce pick when your store is the center of everything. Mailchimp remains the pragmatic choice when your tech stack already assumes Mailchimp.

Quick decision table

Software Best fit Starting paid route Why you might skip it
MailerLite Newsletters, simple to medium automations, small teams Comfort, $12/mo or $10.80/mo annual Your subscriber or send count needs a different price band
Brevo Email + SMS/multi-channel; send-based pricing Starter, from 5,000 emails/mo You need precise contract pricing without talking to sales
Kit Creators, publishers, audience-focused writers Creator, $390 billed yearly at 1,000 subscribers You don’t earn from your audience; you want a general business CRM
ActiveCampaign Conditional automations, sales follow-up Starter/Plus, custom by contact count You mainly send one newsletter a week; budget is tight
GetResponse Lead capture, landing pages, webinars Starter, $19/mo or $15.58/mo annual at 1,000 contacts You already have a page builder and just need a sender
Klaviyo Ecommerce flows with store data Paid quote by active profiles/sends You don’t run an online store; ecommerce pricing is opaque
Mailchimp Existing integrations, brand familiarity Standard, from $20/mo at 500 contacts You bumped against Mailchimp’s contact/send pricing bands before

What any email tool should do for you

Before the picks, a fast orientation. Email marketing software sends messages to people who asked to hear from you and keeps the consent and unsubscribe machinery working. It gives you a list with source and status attached to each record, a way to group people, and some automation that sends sequences on its own.

The part that complicates comparisons is that vendors count different things in different ways. MailerLite counts active subscribers as your list limit and separates a monthly send allowance. Klaviyo counts active profiles, which is a customer-data concept more than a raw email list. Mailchimp prices on contact bands and send multiples. When you move your list later, unsubscribed and suppressed records may not transfer the same way into the new system. That matters more than the logo in the welcome email.

So the evaluation below asks three questions for every pick: What job does this tool actually serve? What does the current plan structure require you to know before paying? And what is the first thing you should test in a pilot before committing?

The seven picks

1. MailerLite: the sensible small-business default

MailerLite public Comfort, Power and Free plan comparison at the 500-subscriber paid selection.
MailerLite public pricing captured in Chrome on 18 October 2026. The paid selector shows 500 subscribers; Free has its separate 250-subscriber cap.

The vendor’s current pricing page puts paid plans at a 500-subscriber default selected view: Comfort is $12 per month billed monthly, or $10.80 per month billed annually ($129.60 a year). It includes 5,000 monthly email sends, 3 user seats, 50 active automations, 10 forms, 10 sites, and 5 active digital products or bookings. Power is $25 monthly or $22.50 monthly billed annually ($270 a year) for the same 500-subscriber band, with unlimited monthly emails, unlimited automations, forms, sites, digital products, and user seats.

The Free plan is now 250 subscribers and 2,500 monthly emails with 2 user seats. If you cross 250 active subscribers on Free, MailerLite’s pricing FAQ says sending locks until you remove subscribers or upgrade. On the Comfort plan, MailerLite describes the send allowance as 10× your subscriber band ceiling, not 10× your exact count, so a 1,000-contact paid band would receive a different send allowance than the 500-subscriber view we captured. Above 500 subscribers, you’d need to check the rendered price band rather than extrapolate.

Why MailerLite earns the top slot: the plan separates feature access from list size. Most small buyers need a newsletter and a welcome sequence first, and MailerLite lets you grow without immediately buying the advanced automation package. The free tier is enough to prove the workflow, and the paid tiers don’t hold back core sending tools behind add-ons.

If transactional email is your core need: MailerLite points that workload to its separate MailerSend product.

2. Brevo: when the bill should be sends, not seats

Brevo’s public pricing page starts paid plans from 5,000 emails per month on Starter. The page emphasizes email and SMS as adjacent channels, with SMS credit sold separately rather than bundled into the email price. Standard adds marketing automation, A/B testing, a landing page, and logo removal. Professional enters at 150,000 emails per month and includes 10 seats. The dynamic dollar figure and any Free-plan send limits were not reliably captured in our rendering, so we’ll say this plainly: verify the current Free-plan daily/monthly limits and the exact paid price for your contact band before deciding.

The reason to pick Brevo over a conventional list-based sender is the multi-channel bundle. If you want to run email campaigns and SMS messaging from one account without maintaining two billing relationships, Brevo’s structure is built for that. The CRM and chat features mean it can also absorb some follow-up work that would otherwise need another subscription.

The tradeoff is that send-based pricing rewards frequency discipline. If you send a few times a month to a medium list, the low-tier price may look cheaper than competitors. If you send daily to the same list, the allowance disappears the same way a data plan does. And because SMS credit, contact storage limits, and email send counts are priced distinctly, the final monthly total requires more arithmetic than a simple list-size price.

Skip Brevo if you want predictable, all-inclusive pricing per contact, or if your team will not keep the separate channels tidy. It’s also overkill when email is the only channel you’ll ever use and a simpler plan costs less.

3. Kit: made for people who earn from their audience

Kit, formerly ConvertKit, positions itself around creators. The current Kit pricing page shows a Free plan up to 10,000 subscribers with limited automation features and Kit branding. The paid Creator plan at 1,000 subscribers is advertised at $33 per month, but the page states the actual yearly total as $390 billed annually, so use that number in your budget, not the monthly-equivalent times twelve. Kit also shows a limited-time Pro offer of $593 for the first year, but since the renewal rate isn’t shown alongside it, we excluded Pro from the cost table and suggest you verify renewal before choosing Pro.

The attraction is the shape of the business model: landing pages, forms, visual automations, email sequences, digital product delivery, paid newsletters, and recommendations all serve the creator who converts an audience into income. Free migration from another platform is also a signal that Kit knows switching cost is a real barrier.

The skip reason is equally important. Kit is not a general-purpose small-business CRM, and its contact-and-send model is built around subscriber value rather than sales pipeline management. If you need deal records, a human sales queue, or lead scoring from emails, you’ll likely end up layering another tool on top, which partly defeats the single-account appeal. Also check the Free plan’s current automation limit: the pricing matrix labels several automation features as not included on Free, and the exact free automation boundary changes over time.

4. ActiveCampaign: for people who will actually build the branches

ActiveCampaign earns a place on automation depth, but the current pricing page uses custom entry points instead of fixed display numbers. The plan structure is Starter, Plus, Pro, and Enterprise. The current page shows Starter with 5 actions per automation, limited segmentation, and one user, while Plus includes unlimited automation actions and standard segmentation. Pro adds advanced segmentation and shows 3 users on the email-plan view; additional users are separately priced. Email send allowances are shown as multiples of contact limit: 10x for Starter and Plus, 12x for Pro, and 15x for Enterprise, based on the current comparison table.

ActiveCampaign is the right pick when your email program is genuinely behavior-driven: different paths for different segments, multiple triggers per automation, conditional splits, and a team member whose job includes owning the builder. The CRM side and add-on enhanced CRM can hold sales follow-up against the same contact, which matters when a human is calling the leads the emails generate.

The catch is operational. ActiveCampaign’s complexity is not decorative; someone must maintain the automations or it becomes an expensive broadcast tool. The pricing remains quote-by-contact-count, so the old $15 or $49 starting numbers you may remember are not current references. Skip ActiveCampaign if your weekly email is a newsletter and the most complex automation you’ll build is a welcome sequence. You’d be paying for a branching engine you don’t run.

5. GetResponse: lead capture and the funnel that follows

GetResponse’s current pricing page at a 1,000-contact selection shows Starter at $19 per month monthly, or $15.58 per month billed annually (about $186.96 a year), Marketer at $59 monthly or $48.38 annualized (about $580.56 a year), and Creator at $69 monthly or $56.58 annualized (about $678.96 a year). The 14-day free trial accesses premium features temporarily, but the current page does not establish a lasting free plan to send from after the trial ends.

The reader GetResponse suits is running lead capture end to end: landing pages, signup forms, popups, a welcome series, and follow-up messages in one account. Marketer unlocks unlimited marketing automations, advanced segmentation, abandoned-cart recovery, sales funnels, and web push. Creator adds webinars, the website builder, course features, and premium newsletter tools.

Skip GetResponse if you already have a page builder you like and only need a sender, or if the quote structure around list size makes your eventual price hard to predict. The 1000-contact numbers above are a rendered selection, not a universal price: larger lists move into higher bands. If you’re weighing GetResponse against a simpler newsletter sender, see our GetResponse vs AWeber comparison.

6. Klaviyo: the store-first pick, with the price to verify

Klaviyo’s current US pricing page shows a Free plan at 250 active profiles, 500 emails per month, and $5 of mobile messages. Beyond that, paid pricing depends on active profiles, sends, and separate SMS credits. We did not capture a valid fixed starting price for paid Klaviyo tiers from the vendor’s rendered page, so the calculator treats paid Klaviyo as a quote, not a preset.

Klaviyo is built for ecommerce. Its core move is pulling store and customer data into the email flows so abandoned carts, product recommendations, back-in-stock, and revenue reporting can use supported integrations. If your store is on a supported platform and your email program needs to answer “which campaign made the sale,” Klaviyo is a strong candidate.

Skip it if you’re not running an online store, if the active-profile concept turns your simple list into a pricing puzzle, or if you need predictable email-only pricing today. Klaviyo’s power is inseparable from its commitment to ecommerce data architecture.

7. Mailchimp: the compatibility pick

Mailchimp’s Standard plan page shows from $20 per month and the page we captured displayed a 500-contact starting band, with a 14-day free trial first. We did not reliably capture the current Free-plan send allowance, so treat any remembered “500 sends” or “250 contacts” number with care and check the rendered page before relying on it. The plan structure runs Free, Essentials, Standard, and Premium. Standard includes more automation flows and send multiples than Essentials; the full comparison page is where the real differences live.

Mailchimp holds value through ubiquity. If your website, booking form, ecommerce app, or past lifecycle already ties into Mailchimp, switching has hidden costs. That itself is a reason to stay when the friction of migration outweighs the pricing advantage elsewhere.

Skip Mailchimp if you’re starting fresh and its contact/send bands don’t line up with your list size, or if the automation depth you need is better served by a conditional-branching tool. Mailchimp has become a broad marketing platform, but that breadth also means paying for a lot of adjacent pieces you may not use.

What does this actually cost? A worked example

Here’s the mental math most people skip. Suppose you have 1,000 contacts and you send 4 broadcasts a month plus a 500-message automated welcome series. That’s 4 × 1,000 plus 500, or 4,500 sends.

On MailerLite Free, you can’t hold 1,000 contacts at all — the free plan stops at 250 active subscribers and 2,500 monthly sends. On a paid MailerLite band, you’d need to select the correct contact tier and then check if the Comfort send allowance covers your monthly volume.

On Brevo, a Starter plan beginning at 5,000 emails per month would cover the 4,500 sends at the low end, assuming the current price and any daily send limits are confirmed. The breached case matters too: if you send 6,000 emails, you’d exceed the low Starter allowance and move into the next band or plan.

free caps and paid send allowances are not the same unit across vendors. A plan that looks generous at 250 contacts can become a hard wall at 1,000. We built the cost examples below around the price and allowance data we could verify from public pages, but anything above the rendered band is a quote, not a guess.

Cost comparison for the verified bands

Scenario Tool plan shown Publicly listed price First-year look What to verify before buying
500 contacts, newsletter + welcome MailerLite Comfort $12/mo or $10.80/mo annual $129.60 annual if billed yearly Send allowance at your exact contact band
500 contacts, higher volume MailerLite Power $25/mo or $22.50/mo annual $270 annual if billed yearly Fair-use terms on “unlimited” sends
1,000 contacts, plan-start sends Brevo Starter varies by send/contact band check current displayed price for your band Exact first-tier price and daily limit
1,000 subscribers, creator work Kit Creator $390 billed yearly at 1,000 subscribers $390 first year Renewal after year one
1,000 contacts, lead capture GetResponse Starter $19/mo or $15.58/mo annual $186.96 annual if billed yearly Whether 14-day trial converts to paid automatically
1,000 contacts, branching automations ActiveCampaign Starter or Plus quote by contacts and plan unknown without quote Actions per automation and send multiple at your contact count
250 active profiles Klaviyo Free $0 $0 while under limits Paid tier price at your profile count
500 contacts Mailchimp Standard from $20/mo from $240 first year Current send multiple and branding limits

The pattern to notice: several “from” prices are conditional on contact bands, billing period, and add-on boundaries. We haven’t invented linear per-contact formulas because the vendors don’t price that way consistently. If a tool’s price comes back as “custom,” treat it as custom. A quote is more accurate than an invented number.

Budget calculator for your first-year estimate

Estimate your email marketing budget

Start with a documented plan or your own quote. An unknown price or an ineligible usage band stays unknown.

Configuration and complete costs

A payment frequency does not establish cancellation rights.

Include required domains, apps, email, AI, payment fees and support. Zero is a starting input, not evidence that an extra is free.

First-year cash budget

Checking configuration…
Subscription cash in year one
Subscription payment due
12-month subscription allocation
Later annual budget at shown rates

Estimate only. No automatic cheapest winner. Confirm the eligible plan, billing band, commitment and renewal. Tax, future price changes and unentered costs are excluded.

Public examples checked 18 October 2026. First-year cash = subscription payments due in the first 12 months + setup + 12 × monthly extras + annual extras. Later-year estimates assume unchanged rates and omit setup. Entries stay in this browser.

Download the blank evaluation worksheet to verify requirements and record your own pilot.

Use the calculator with one combined number for sends: multiply your subscribers by the number of broadcasts you’ll send each month, add any automation sends, and enter that total. It works from the verified presets where we have public pricing and labels the custom-quote cases instead of pretending. It will not choose a cheapest winner when a plan is ineligible or when the quote is unknown; sometimes the honest result is “verify with the vendor.”

Try the full email marketing cost calculator to compare first-year totals with your actual inputs. Keep in mind the calculator is directional: taxes, SMS credit, add-on costs, mid-cycle upgrades, and unverified renewal rates aren’t folded into a simple monthly sum.

Pilot checklist: send something real before you buy

Download the email marketing evaluation worksheet and the pilot checklist. The fields stay blank because we haven’t run your workflows; that’s the point.

The pilot that matters for this category is small and safe: build one real campaign, not a demo. Create a fake list of a few test addresses you control, import them, add a signup form, trigger one welcome sequence, and observe how the tool counts sends and contacts. Then answer the questions the worksheet asks: Can the plan hold your list size? Does the welcome automation run on the tier you’d buy? What happens to unsubscribed or bounced contacts when they leave the list? Can you export your data back out in a useful format?

Do not send real customer data into a test account or import a production list just to see how it feels. Keep the pilot with synthetic data until the buying decision is made. The migration checklist covers the later transfer: export subscribers with consent, source, and suppression flags intact; check how the new vendor counts unsubscribes; re-import with a documented mapping; rebuild automations by hand; and keep the old account open long enough to confirm the new sends are landing. Our guide to moving email platforms expands on that path.

How to choose without overthinking it

Go back to the job. If your email is a newsletter to a small list with a welcome series, start with MailerLite and only move on if the plan boundary conflicts with your growth. If you need email and SMS alongside each other, verify Brevo’s current send-based pricing. If you write to an audience that also buys your products, Kit is the native answer. If your automation has branches and a human owner, ActiveCampaign. If the landing page and the email are the same funnel, GetResponse. If the store generates everything, Klaviyo. If your stack already assumes Mailchimp, the switching cost may wipe out the pricing difference.

Email migration checks: export consent, map records, preserve suppression and verify.
Original explanatory diagram; these are evaluation steps, not completed vendor-account tests.

Then run the pilot. The tool you can send a real campaign from quickly is the one you’ll keep using next month. Our ActiveCampaign review and GetResponse pricing guide are next reads if those two tools made your shortlist. For the wider set of business-software choices that touch marketing, start at our marketing software hub.


How we picked these and what we did not test

We selected seven products from current public pricing pages and feature matrices, an Ahrefs snapshot of US results for “best email marketing software” (dated 18 October 2026), and three competitor roundups we inspected for questions and coverage gaps. We did not run logged-in account tests, import real customer data, send campaigns, or measure deliverability, support speed, or revenue outcomes. No support response-time claim, deliverability ranking, or “easiest” label should be read as an OSI Affiliate measurement. The pricing observations are from the vendors’ rendered public pages on 18 October 2026, US English, where the selection defaulted to USD and the vendor’s displayed contact band. Prices, plan limits, feature gates, and packaging change, so check the source before paying.

This page has the same affiliate disclosure as the rest of the site: OSI Affiliate may earn commission when you buy through some links (see the full disclosure), and that never determines inclusion, order, or the caveats. If you spot an outdated number, tell us through the contact page, and read how we pick software and about our publication for the fuller method and evidence limits.

Written by

OSI Affiliate Reviews DeskEditorial team

Business-software reviews, comparisons and buying guides for small teams. We compare vendor documentation and pricing, explain the limits of our evidence, and identify affiliate links. Each guide states whether it includes account testing, public demos or documentation research.