Email marketing still punches above its weight for small businesses — not because of the inflated “4,200% ROI” stat that gets copy-pasted across every marketing blog (that number comes from a 2016 DMA report and has been recycled ever since), but because you own the list. Unlike paid social, nobody can change an algorithm and cut your reach in half overnight.
But the platform you choose matters more than most founders realize. We spent several weeks using each of these tools for real campaigns — onboarding sequences, newsletters, product launches, and the inevitable “oh no, we need to re-engage cold subscribers” workflows. What follows is what we learned, including where each tool quietly falls apart.
Quick Verdict
Best overall: Mailchimp — if you’re starting fresh and want something that works out of the box with decent automation and the broadest integration ecosystem. Not the cheapest, not the most powerful, but the one with the fewest sharp edges for a small team.
Best for creators: ConvertKit (now Kit) — worth the price if your business model is built around a content audience. Overkill and oddly expensive if it isn’t.
Best budget option: Brevo — the only platform on this list that doesn’t punish you for having a big list, because it charges by sends rather than contacts. Real tradeoffs on templates and polish.
Weakest of the lot: GetResponse — tries to be an all-in-one suite and ends up mediocre at everything. Skip unless you specifically need webinars bundled in.
How We Tested
We ran live campaigns through each platform using our own lists and test domains, with properly configured SPF, DKIM, and DMARC. We sent newsletters, built multi-step automations, and tried to break things. We did not run artificial deliverability benchmarks — those numbers are easy to fake and platform-dependent in ways that don’t translate to your domain reputation. If you see “97.3% deliverability” in a review, that’s marketing theater. Your deliverability will be driven mostly by your own sender reputation, list hygiene, and authentication setup, not the logo on your ESP.
For each tool, we also dug into pricing tiers carefully, because “land and expand” pricing is standard in this category: the starter plan looks cheap, then the feature you actually need (automation, sending limit increases, removing the vendor logo) sits a tier or two up.
Comparison Table
| Platform | Best For | Starting Price | Free Plan | Pricing Model |
|---|---|---|---|---|
| Mailchimp | Broad small-business use | ~$13/mo | 500 contacts | Per-contact |
| Kit (ConvertKit) | Creators, course sellers | ~$29/mo | 10k contacts (limited) | Per-contact |
| Brevo | Large lists, tight budgets | ~$9/mo | 300 emails/day | Per-send |
| Constant Contact | Local & event-based businesses | ~$12/mo | 30-day trial | Per-contact |
| ActiveCampaign | Complex automation, B2B | ~$15/mo | No | Per-contact |
| Campaign Monitor | Design-heavy brands | ~$11/mo | Limited trial | Per-contact |
| AWeber | Beginners on a tight budget | Free / ~$15/mo | 500 contacts | Per-contact |
| GetResponse | Businesses wanting bundled webinars | ~$15/mo | 500 contacts | Per-contact |
Prices are from the vendors’ public pricing pages at time of writing and round to the nearest dollar — they change frequently, and most vendors quietly discount if you pay annually.
Mailchimp — Best All-Around, With Caveats
Mailchimp is the default for a reason. Campaign creation is unfussy, the template library is serviceable, and the drag-and-drop editor rarely breaks. The free plan (500 contacts, limited monthly sends) is enough to actually test the product on a real list rather than a sandbox.
What we liked: the campaign builder is genuinely fast once you know it. Audience segmentation works, and the reporting gives you the things you actually look at first — open rate trends, click maps, which links drove revenue if you’ve wired up e-commerce tracking. Integrations are where Mailchimp still leads. Shopify, WooCommerce, Squarespace, and most CRM platforms have real native connectors rather than Zapier-only stubs, and there’s a meaningful difference: native integrations sync in near real time and handle errors gracefully, while Zapier connectors fail silently when you hit task limits.
Where it falls down: Mailchimp’s automation has improved, but “Customer Journeys” still feels clunkier than ActiveCampaign or Kit when you’re building anything with branching logic. The bigger issue is pricing. Mailchimp charges per contact, and the tier jumps are ugly — we’ve seen clients go from about $20/month to over $75/month in a single quarter just from organic list growth. You’re billed on stored contacts, not just engaged ones, so every unclean list is costing you money. Essentials-tier customers also lose access to some automation features that used to be free, which is classic land-and-expand behavior.
One more thing worth knowing: Mailchimp’s “unlimited sends” marketing applies only to certain tiers, and the fine print caps you at 10x your contact count. That matters if you run re-engagement campaigns or heavy newsletter cadences.
Bottom line: if you’re picking one platform without knowing exactly what you need, Mailchimp is the safest pick. If you know your list will be over 5,000 contacts in a year, price it out on a per-send platform first.
Kit (formerly ConvertKit) — Best for Creators, if You Are One
Kit rebuilt itself around the creator economy and it shows. If you’re a newsletter operator, course creator, or anyone whose business model looks like “build an audience, monetize the audience,” this is probably the right tool. The visual automation builder is the best in this group for content-driven sequences — you can tag subscribers based on what they clicked, funnel them into different courses or products, and re-segment dynamically without fighting the interface.
Deliverability has been reliably good in our sends, though the main reason Kit campaigns tend to land in inboxes isn’t magic — it’s that Kit’s default templates are plain-text-ish, which naturally avoids the design-heavy HTML patterns that trigger Gmail’s promotions tab.
The real problem with Kit is that you pay a premium for features you may never use if you’re not a creator. Starting at around $29/month for 1,000 subscribers is steep compared to Brevo or Mailchimp, and the Creator Pro tier (around $59/month and up) is where features like advanced reporting and newsletter referrals live. The platform also has thin template and design options — “simple” is the brand, but if you want a visually polished retail newsletter, you’ll fight the editor.
Bottom line: great if you sell courses, paid newsletters, or digital products. Overpriced and awkwardly-shaped for a normal small business sending monthly promotions.
Brevo — Best Value if You Understand the Tradeoffs
Brevo is the only mainstream platform on this list that bills by sends rather than contacts. That single difference makes it dramatically cheaper for businesses with large, partially-dormant lists — which is most small businesses after a couple of years. We’ve seen switches from Mailchimp to Brevo cut monthly costs by 60-70% without losing functionality, purely because those businesses were paying Mailchimp to store 8,000 contacts they emailed once a quarter.
The free tier gives you 300 emails per day with unlimited contacts. Paid plans start around $9/month and scale by monthly send volume. Automation is capable — not ActiveCampaign-level, but more than enough for welcome series, abandoned cart, and lead scoring. The SMS add-on is a genuine differentiator if you want to run text campaigns alongside email without stitching together two vendors.
What you give up: Brevo’s template library and editor feel a full generation behind Mailchimp and Campaign Monitor. You can make good-looking emails, but it takes more effort. The interface has rough edges — menus in inconsistent places, some settings buried. Support has been slower than competitors when we’ve needed it, and the knowledge base is uneven in quality. If you need SSO, you’re pushed to an enterprise conversation; that’s industry standard but worth flagging, because SSO-behind-enterprise is a common “security tax” that punishes companies trying to do the right thing.
Bottom line: if your list is growing and you’re tired of per-contact bills, switch. Just accept the rougher editor.
Constant Contact — Fine for Local Businesses, Dated Elsewhere
Constant Contact has leaned into local and event-driven businesses — restaurants, real estate agents, nonprofits, fitness studios. The event management tools are genuinely useful if you run workshops or classes, and the template library includes a solid set of industry-specific layouts you’d otherwise have to build from scratch.
Pricing starts around $12/month for 500 contacts and scales up steeply. The “Lite” tier is deliberately stripped — no automation beyond a welcome email, no A/B testing, no advanced segmentation — which means the real starting price for most businesses is more like $35/month on the Standard plan.
Support is the standout. Phone and chat are available across tiers, and the reps actually help rather than routing you back to docs. That matters if you’re a non-technical founder setting up email for the first time.
Where it disappoints: the automation builder feels like it was designed five years ago. If you need anything beyond “send email X, wait three days, send email Y,” you’ll hit walls. Segmentation is basic. And the per-contact costs climb faster than competitors once you pass a few thousand subscribers.
Bottom line: real value if you’re a local business that needs event tools and hand-holding. Skip if you need serious automation.
ActiveCampaign — Most Powerful Automation, Steepest Curve
ActiveCampaign is what you graduate to when Mailchimp’s automation stops being enough. The automation builder handles conditional logic, wait-for-event triggers, lead scoring, goal tracking, and site-behavior triggers in a way nothing else in this price range matches. If you run B2B sales flows or need an email platform that doubles as a light CRM, this is the obvious choice — though for most sales-driven businesses, pairing it with a dedicated small business CRM still makes sense for pipeline tracking.
Pricing starts around $15/month for the Lite tier at 500 contacts, but the honest starting point for most businesses is the Plus tier (roughly $49-$70/month depending on list size), because the Lite tier omits the CRM, custom objects, and meaningful lead scoring. This is a classic example of land-and-expand pricing — the features that make ActiveCampaign worth choosing live above the advertised starter tier.
The downside is steepness. ActiveCampaign’s interface is dense, the terminology can be confusing, and setting up a non-trivial automation is a multi-hour project the first time. If nobody on your team has email-automation experience, expect a real learning curve, and budget time for it. Templates are also notably fewer and plainer than Mailchimp or Campaign Monitor — this is a tool built for people who care more about logic than about drag-and-drop aesthetics.
Export and portability are reasonable — you can get your contacts and automations out — but migrating an automation-heavy ActiveCampaign setup to another platform is the kind of vendor lock-in that costs real time, not because the data is stuck but because rebuilding the workflows elsewhere is a project of its own.
Bottom line: the right tool for automation-heavy workflows if you’re willing to invest the learning time. Overkill for monthly newsletters.
Campaign Monitor — For Brands That Care About Design
Campaign Monitor is the one to pick if the look of your email matters more than the logic behind it. The template library is curated rather than exhaustive, and the editor gives you finer typography and spacing control than Mailchimp — closer to what a designer would actually want. Agencies historically love it for white-label client work.
Automation is weaker than ActiveCampaign or Kit, and the pricing ramps quickly when you cross contact thresholds. There’s no free tier, just a limited trial, and features like send-time optimization and advanced analytics live on the higher tiers.
Bottom line: great editor if design is central to your brand. Not the pick if automation is a priority.
AWeber — Forgiving for Beginners, Limited Ceiling
AWeber’s appeal is that it’s easy to pick up and has a usable free tier for small lists. The onboarding is genuinely gentle, the template library is adequate, and the support team responds quickly. It’s a reasonable choice for a solo operator or a founder who just needs to send a newsletter without drama.
The limitations show up fast if you grow. Automation is basic, the interface feels dated, and integrations are thinner than the market leaders — plenty of Zapier-only connections where Mailchimp has native ones, which matters when Zapier tasks fail and you find out days later. Per-contact pricing also climbs faster than Brevo for similar-sized lists.
Bottom line: fine as a first email tool. Plan to migrate away when your needs mature.
GetResponse — Bundled Webinars, Compromised Core
GetResponse markets itself as an all-in-one: email, landing pages, webinars, funnels. In practice, each piece is a notch below the category leader. The email editor is okay but not distinguished. The automation is capable but the UI is unpleasant to live in. The landing page builder is functional but you’d be happier with a dedicated tool. The webinar feature — the genuinely unique thing here — works, but it’s limited compared to Zoom or Riverside on the dimensions that matter.
This is the one product in the roundup we’d push back on. If the bundled webinar hosting is a dealbreaker cost saver for you, fine. Otherwise, you’ll get better email from Mailchimp or Brevo, better automation from ActiveCampaign, and better landing pages from nearly anything dedicated.
Bottom line: the weakest option here for most use cases. Only consider it if the webinar bundle genuinely replaces another tool.
Picking By Use Case
- Shopify or WooCommerce stores: Mailchimp for native integration, or look seriously at Klaviyo (not tested here but the category leader for e-commerce) if your average order value justifies the higher spend. These stores also benefit from pairing with a POS system for unified in-store and online reporting.
- Newsletter operators and course creators: Kit.
- Local businesses and events: Constant Contact.
- Big list, small budget: Brevo. The per-send model is the whole point.
- B2B with real sales funnels: ActiveCampaign. Complement it with a project management tool to keep campaign deliverables organized across teams.
- Design-first brands: Campaign Monitor.
- First-timers: AWeber or Mailchimp’s free tier, with the expectation you’ll reassess in a year.
Pricing Is the Real Battle
A few patterns to watch for, because they apply across the whole category:
- Per-contact vs per-send: per-contact pricing punishes list growth, per-send punishes high-frequency senders. Neither is “better” in the abstract — match it to your sending pattern.
- Feature tiering: the advertised starter price almost never includes the features you’ll actually need within six months. When evaluating, price out the tier with automation and proper segmentation, not the cheapest one.
- Overage charges: some platforms throttle, others charge. Read the fine print before you run a big campaign.
- SSO and advanced security: expect these to live on enterprise tiers. If your company requires SSO, you may effectively be priced out of the small-business plans regardless of list size.
- Annual discounts: most vendors offer 10-20% off for annual billing. Fine if you’re confident in the pick — painful if you discover month two that you chose wrong.
- Migration cost: moving contacts is easy. Rebuilding automations, re-authenticating domains, retraining the team, and repointing integrations is where the real cost lives. Budget a week of work for any serious migration.
Deliverability: What Actually Matters
The platform matters less than most reviews pretend. The things that actually move deliverability for a small business:
- Proper authentication — SPF, DKIM, and DMARC set up on the sending domain. This is non-negotiable in 2026; Google and Yahoo require it for bulk senders, and inboxes where you’re not authenticated effectively treat you as suspicious.
- List hygiene — removing unengaged subscribers regularly. Most platforms offer automated sunsetting; use it.
- Send from a domain with history — a brand-new domain with no reputation will struggle on any platform for the first few weeks.
- Content and engagement — Gmail and Outlook both heavily weight recipient engagement. Boring, irrelevant emails hurt deliverability across every tool in this list.
No ESP can rescue a bad sender reputation. A great ESP can make an already-healthy program run smoother.
FAQ
What should a small business actually budget for email?
Realistically, $20-$50/month for a list under 2,500 and $75-$150/month as you cross 10,000. Add more if you need SMS or webinars. Per-seat pricing is rare in this category, but watch for user limits on lower tiers.
How often should I send?
Most small businesses under-send, not over-send. Weekly is a defensible default for a newsletter. For transactional or behavioral emails, send based on the trigger, not a schedule.
What’s a “good” open rate?
Apple’s Mail Privacy Protection broke open rates as a metric — they now overstate real engagement, sometimes dramatically. Look at click rates and downstream conversions instead. If you must use opens, 20-30% is a normal range, but don’t optimize for the number itself.
Do I need email and a separate CRM?
If you sell things with a sales cycle, yes. If you run a content business, probably not — Kit or ActiveCampaign will cover you. See our CRM guide for picks that sync cleanly with the platforms above.
Can I trust free tiers?
Free tiers exist to create switching costs, not to give you value. They’re fine for testing and for genuinely tiny lists, but treat them as a trial, not a permanent plan.
What about deliverability guarantees?
Most SaaS uptime SLAs are 99.9%, which sounds impressive until you realize it allows about eight hours of downtime per year. Deliverability isn’t covered by SLA at all. Your reputation is yours — no vendor will insure it.
What breaks when I migrate?
Contacts move easily. Automations do not — you’ll rebuild them. Domain authentication needs to be repointed. Integrations need to be reconnected. Plan for a week of real work, and keep the old platform live in parallel until you’ve verified the new one is sending cleanly.