Every business eventually needs to send emails to customers or subscribers. Newsletters, promotional campaigns, product updates, onboarding sequences—email remains one of the most effective digital marketing channels despite predictions of its death for the past decade.

The challenge is choosing email marketing software. The market’s crowded with options at different price points with overlapping but not identical features. And the stakes are higher than they appear—poor deliverability means your emails never reach inboxes, complex interfaces mean you won’t actually send campaigns, and opaque pricing means costs spiral unexpectedly.

Here’s what actually matters when choosing email marketing platforms for small businesses (roughly defined as under 10,000 subscribers), and which tools deliver without gouging you on price or burying features behind complexity.

The Core Requirements

What does a small business actually need from email marketing software? The basics: ability to manage subscriber lists, design emails (either with templates or custom HTML), send campaigns, track basic metrics (open rates, click rates), and handle unsubscribes automatically.

Beyond basics, useful features include: automation workflows (welcome sequences, drip campaigns), segmentation to send targeted messages to subscriber subsets, A/B testing to optimize subject lines and content, and integration with other tools (CRM, e-commerce, analytics).

What you probably don’t need initially: advanced behavioral triggers, predictive send time optimization, multi-variant testing, or sophisticated AI recommendations. These add complexity and cost without proportional value for most small businesses.

Deliverability matters enormously but is hard to evaluate. The best-designed campaign is worthless if it lands in spam. Established platforms with good sending reputation and infrastructure generally deliver better than new or cheap services.

Mailchimp: The Default Choice

Mailchimp’s been the dominant email marketing platform for small businesses for years. It’s what people think of first when they consider email marketing tools. This ubiquity comes from a generous free tier, reasonable pricing tiers, and comprehensive features.

The free tier allows up to 500 subscribers and 1,000 monthly email sends. For tiny lists, this works fine. Paid tiers start at $13/month for up to 500 subscribers (with unlimited sends) and scale based on subscriber count. By 2,500 subscribers, you’re at $46/month.

Features are comprehensive. Email builder is drag-and-drop with decent templates. Automation workflows handle welcome series, abandoned carts, and custom triggers. Segmentation capabilities are solid. Analytics show opens, clicks, and campaign performance. Integration with e-commerce platforms, CRMs, and other tools is extensive.

Downsides include interface complexity. Mailchimp’s added features over years, and the UI shows it—menus are cluttered, finding specific settings requires hunting. For beginners, it’s overwhelming. The email builder sometimes fights you when you want custom designs.

Deliverability is generally good—Mailchimp’s established and maintains sending reputation. But they’re also aggressive about suspending accounts for suspected spam or policy violations, sometimes with minimal warning or explanation. This creates anxiety.

Pricing gets expensive as lists grow. At 10,000 subscribers, you’re paying $150/month (Standard tier) or $350/month (Premium). That’s significant for small businesses, especially since you pay for total subscribers even if many are inactive.

Use Mailchimp if you need comprehensive features, integration with other tools, and want the safety of the established market leader. Don’t use it if you find the interface confusing or if pricing becomes prohibitive as your list grows.

ConvertKit: Creator-Focused Alternative

ConvertKit markets itself to creators—bloggers, podcasters, course creators—rather than traditional businesses. This shapes feature priorities and interface design.

The core philosophy is subscriber-centric rather than list-centric. Instead of maintaining multiple separate lists, you have one subscriber database with tags and segments. This prevents duplicate subscribers across lists and makes management cleaner.

Automation is strong. Visual workflow builder makes creating sequences intuitive. Tag-based segmentation allows sophisticated targeting. Landing page builder helps capture subscribers without separate tools.

Email design is deliberately simple. ConvertKit doesn’t offer fancy templates or drag-and-drop builders. Emails are plain-text or simple HTML. The assumption is personal, direct communication works better than heavily designed marketing emails.

This is either a feature or limitation depending on perspective. For creators building audiences based on personality and content, simple emails suit the relationship. For businesses wanting branded, designed campaigns, it’s restrictive.

Pricing starts at $15/month for up to 300 subscribers, scaling to $29/month for 1,000 subscribers and $66/month for 3,000. By 10,000 subscribers, you’re at $208/month. This is more expensive than Mailchimp for comparable list sizes, though you get unlimited sends even on lower tiers.

There’s a free tier (up to 1,000 subscribers) but with limited features—no automation workflows, no advanced segmentation. It’s useful for getting started but most people outgrow it quickly.

Use ConvertKit if you’re a creator building direct relationships with subscribers and value simplicity over designed campaigns. Don’t use it if you need visual email design or tighter budgets demand cheaper options.

Brevo (formerly Sendinblue): Value Option

Brevo repositioned from Sendinblue recently but the service remains: affordable email marketing with SMS capabilities bundled in.

Pricing is structured differently from competitors. Instead of charging per subscriber, Brevo charges per email sent with unlimited contacts. The free tier allows 300 emails/day with unlimited contacts. Paid tiers start at $9/month for 5,000 emails/month, $18/month for 20,000 emails, scaling up from there.

This pricing model works well if you have large contact lists but send infrequently. You could have 10,000 subscribers and pay $18/month if you only send two campaigns monthly. With Mailchimp, the same list costs $150/month regardless of send volume.

Features are solid. Email builder is adequate with templates. Automation workflows handle standard use cases. Segmentation capabilities are decent. SMS integration allows multi-channel campaigns if that matters for your business.

Deliverability is generally good, though Brevo has less established reputation than Mailchimp. Reports of deliverability issues appear occasionally, though many platforms get similar complaints.

The interface feels slightly clunky compared to polished competitors. It works but lacks refinement. For users who don’t care about interface aesthetics, this is irrelevant. For those who value polish, it’s noticeable.

Use Brevo if you have large contact lists with infrequent sending, need SMS capabilities, or want affordable pricing that doesn’t scale aggressively with list size.

Buttondown: Minimalist Newsletter Tool

Buttondown is deliberately simple. It’s built for people who want to write newsletters without complexity. No drag-and-drop builder, no fancy automation, just writing and sending emails.

You write in Markdown or plain HTML. Styling is minimal. The assumption is content matters more than design. For writers focused on substance, this removes distraction. For businesses wanting branded campaigns, it’s too limited.

Features are intentionally sparse. You can send campaigns, manage subscribers, schedule sends, and see basic analytics. That’s it. No complex automation, no behavioral triggers, no sophisticated segmentation.

Pricing is simple: $9/month per thousand subscribers. So 1,000 subscribers costs $9/month, 5,000 costs $45/month, 10,000 costs $90/month. Cheaper than most competitors, though with fewer features.

Deliverability is reportedly good despite being smaller platform. The creator is technical and focused on infrastructure quality.

Use Buttondown if you’re writing straightforward newsletters, value simplicity, and don’t need automation or design tools. Don’t use it for complex marketing campaigns or if you need visual email building.

MailerLite: Feature-Rich Value Option

MailerLite positions between budget and premium options. It offers more features than minimalist tools, better pricing than premium options, and reasonable usability.

Free tier supports up to 1,000 subscribers with 12,000 monthly emails. Paid tier starts at $10/month for 1,000 subscribers, $21/month for 2,500, and $50/month for 10,000. This is cheaper than Mailchimp and ConvertKit for comparable lists.

Features include drag-and-drop email builder, automation workflows, landing page builder, pop-up forms, and website builder. It’s fairly comprehensive for the price.

The interface is cleaner than Mailchimp’s—more modern, less cluttered. Navigation is generally intuitive. The email builder works smoothly without fighting you.

Deliverability is decent based on user reports. MailerLite’s worked to build good sending reputation, though they’re less established than Mailchimp.

The catch is that being mid-tier means less polish than premium options and fewer features than comprehensive platforms. It’s good at core functions without excelling at anything specific.

Use MailerLite if you want good value—solid features at reasonable prices without major compromises. Don’t use it if you need specific advanced features or absolute top-tier deliverability.

When to Build vs. Buy

For very simple needs—sending occasional updates to small lists—you could use your regular email client with BCC. This costs nothing and works for under ~50 recipients. Beyond that, deliverability suffers and management becomes impractical.

For developers comfortable with code, transactional email services like Amazon SES or Postmark can send campaigns for pennies per thousand emails. You build your own subscriber management and templates. This is cost-effective but requires technical ability and ongoing maintenance.

Most businesses should use dedicated email marketing platforms. The time saved, deliverability improvements, and regulatory compliance (unsubscribe handling, GDPR requirements) justify the cost versus building custom solutions.

What Actually Matters

Features beyond basics matter less than you think. Most campaigns use simple templates, basic segmentation, and straightforward automation. Sophisticated capabilities sound good but often go unused.

Deliverability matters enormously. An email that doesn’t reach the inbox is worthless. Established platforms with good reputation generally deliver better.

Usability matters if you’ll actually send campaigns. Complex tools that require training mean campaigns don’t get sent. Simple tools that match your skill level get used consistently.

Pricing structure matters based on your list growth pattern. If you’re adding subscribers quickly, per-subscriber pricing hurts. If you have stable lists with varying send volume, per-send pricing works better.

Practical Recommendations

For most small businesses starting email marketing: Start with Mailchimp’s free tier or MailerLite’s free tier. Both provide adequate features to learn email marketing without cost. Evaluate after a few months once you understand your needs.

For creators and writers building personal audiences: ConvertKit or Buttondown depending on whether you need automation workflows (ConvertKit) or prefer absolute simplicity (Buttondown).

For businesses with large lists but infrequent sending: Brevo’s per-send pricing saves money compared to per-subscriber models.

For businesses growing aggressively: Watch pricing carefully. ConvertKit and Mailchimp get expensive fast. Consider MailerLite or Brevo as cost-effective alternatives.

For technical users willing to manage infrastructure: Transactional email services plus custom code provides ultimate control and low costs at expense of time investment.

Don’t Overthink It

Email marketing platforms are tools, not strategy. Success depends more on having something valuable to say and saying it consistently than on which platform you use.

Pick something reasonable, learn it adequately, and focus on building your list and creating campaigns people want to receive. You can always migrate platforms later if needs change, though migration is annoying enough to avoid doing frequently.

Start simple, scale as needed, and remember that fancy features unused deliver zero value. Basic emails sent consistently beat sophisticated campaigns that never launch.