Best Email Marketing Software for Small Business (2026)

Updated: August 25, 2026. Prices checked: August 25, 2026. By: Stack Briefs Editorial.

Affiliate disclosure: We rank products by small-business fit, not commission. If you buy through an affiliate link or an officially approved partner code, we may earn a commission without changing your price or our ranking.

Our verdict

MailerLite is the best email marketing software for most small businesses in 2026. Comfort costs $12/month for 500 active subscribers and $33/month for 2,500, with 10 monthly sends per subscriber-tier ceiling, 50 automations, forms, landing pages, websites and three seats. Brevo is better when a large contact database, transactional email or SMS matters more than email-only simplicity; Moosend is the best low-cost option for frequent senders.

Mailchimp remains the strongest integration-led choice, Omnisend is the specialist pick for ecommerce, and GetResponse is best reserved for businesses that will use funnels or webinars. We excluded Constant Contact from the top six: its support and event tools are useful, but its lower tiers offer weaker automation value at these audience sizes.

Prices as of August 25, 2026. USD prices use monthly billing, standard recurring rates and the cheapest practical paid email plan at each audience size. Introductory discounts, annual prepayment, taxes, SMS, add-ons and overages are excluded.

How we ranked small-business email platforms

We evaluated seven candidates before looking at affiliate economics: MailerLite, Brevo, Moosend, Mailchimp, Omnisend, GetResponse and Constant Contact. The weights were pricing fit at 500 and 2,500 contacts 25%, automation 20%, ease and support 20%, sending and billing rules 15%, integrations and additional channels 10%, and forms, landing pages and other growth tools 10%.

The ranking is an editorial judgment from those weights, while prices and limits are observable facts linked to official pages. We did not run an independent inbox-placement test, so this page does not award a deliverability winner. We also did not treat a large integration directory as proof that a particular connector transfers the fields or consent status a business needs.

Small-business email pricing at 500 and 2,500 contacts

Official pricing sources: MailerLite, Brevo, Moosend, Mailchimp, Omnisend, and GetResponse.

The table compares contact capacity, not identical feature bundles. Brevo ties contact storage to selected send volume. MailerLite, Mailchimp and Omnisend apply send multipliers to a contact tier. Moosend and GetResponse include unlimited campaign email on these paid plans. A business sending one monthly newsletter may therefore prefer a different billing model from one running daily automations.

1. Why is MailerLite the best email platform for most small businesses?

MailerLite offers the best balance of price, usable automation and built-in audience-growth tools. Comfort costs $12/month for up to 500 active subscribers and $33/month for up to 2,500. It includes three seats, 50 active visual automations, ten forms, ten websites and landing pages combined, and five digital products or bookings. Its monthly sending allowance equals ten times the ceiling of the selected subscriber tier. Sources: MailerLite pricing, plan and billing rules, and current automation limits.

The billing detail matters. MailerLite counts unique active subscribers, but the count is cumulative during the billing cycle: an address that was active earlier in the cycle can still count after deletion until the monthly reset. Comfort is therefore a good fit for a stable permission-based list, not for repeatedly swapping large batches of contacts through one tier.

The free plan became less generous on June 16, 2026: it now allows 250 active subscribers, 2,500 monthly emails and three active automations. That is still more usable for automation than Mailchimp Free, but it is no longer a long runway for list growth. The other limitation is channel separation. SMS and production transactional delivery sit in the separate MailerSend product rather than the core MailerLite marketing plan. Sources: MailerLite Free-plan update and MailerSend pricing.

2. When is Brevo better than MailerLite?

Brevo is better when stored contacts, sending frequency and operational messages do not grow together. Its Free plan stores up to 100,000 contacts and allows 300 email sends per day. Starter begins at $9/month for 5,000 monthly emails and up to 500 stored contacts; the 15,000-email tier stores up to 2,500 contacts. Free and Starter include email and SMS campaigns, transactional email and SMS, and multi-channel automation for up to 2,000 contacts. Source: Brevo plan guide.

That makes Brevo the stronger choice for a business with 20,000 customer records that mails only a small segment, or one that wants marketing and transactional messages in the same product family. It is not automatically cheaper for a weekly full-list newsletter: selected email volume determines the paid tier and contact-storage limit, and Brevo can automatically move Starter or Standard customers to a higher tier when the contact ceiling is exceeded.

Standard starts at $18/month and removes the 2,000-contact automation cap while adding A/B testing, send-time optimization, advanced reporting and a landing page. A business choosing Brevo for automation should compare Standard, not just the $9 Starter headline.

3. Is Moosend the best low-cost option for frequent sending?

Yes. Moosend Pro starts at $9/month for up to 500 subscribers and costs $32/month in the 2,001–3,000 bracket, which covers a 2,500-contact list. It includes unlimited email campaigns, automation workflows, landing pages, forms and an SMTP server. The 30-day trial permits unlimited sends to up to 1,000 contacts but does not become a permanent free plan. Sources: Moosend pricing and subscription-plan rules.

Moosend also avoids one common list-pricing penalty: if the same subscriber appears in multiple lists or segments, the pricing page says that address is billed once. That is simpler than GetResponse, which counts the same address separately when it belongs to multiple lists.

The trade-off is breadth. Transactional email, dedicated IPs, custom reports, SSO and extra team members are selectable Moosend+ add-ons or Enterprise features, and Moosend does not provide a native SMS marketing path comparable to Brevo or Omnisend. Choose it for high-frequency email and automation, not because it is an all-channel customer platform.

4. When is Mailchimp worth the higher price?

Mailchimp is worth considering when a required connector, paid SMS/MMS add-on, advanced reporting or its broader marketing ecosystem is more important than the lowest monthly bill. Essentials costs $13/month for 500 contacts and $45/month for 2,500, with monthly sends equal to ten times the selected contact tier. It includes three seats and three audiences. Standard starts at $20 for 500 contacts, raises sending to twelve times the tier and adds deeper automation and reporting. Sources: Mailchimp pricing and plan definitions.

The Free plan is now only a test bed for ongoing marketing: 250 contacts, 500 monthly sends, a 250-send daily cap, one seat and no Marketing Automation Flows. A full campaign to 250 contacts consumes half of the monthly allowance.

Mailchimp bills by contacts stored across audiences, and paid plans can charge overages when the contact or send ceiling is exceeded. Before importing, deduplicate audiences and model the number of marketable and non-subscribed contacts that will remain billable. Buy Mailchimp for a verified operational advantage, not familiarity with the brand.

5. Why is Omnisend the ecommerce specialist rather than the overall winner?

Omnisend is the strongest candidate here for a small ecommerce store. Standard costs $16/month for 500 billable contacts and 6,000 emails, or $44/month for 2,500 and 30,000 emails. Every plan, including Free, exposes its standard automation, segmentation and ecommerce feature set; Pro starts at $59/month with unlimited email and monthly SMS credits. Sources: Omnisend pricing and Omnisend Pricing Plans 2026.

The billing object is the reason it ranks fifth for a general small business. Omnisend can count subscribers and non-subscribers who receive automated messages as billable contacts. That matches ecommerce behavior such as abandoned checkout and post-purchase messaging, but it can produce a different bill from a clean newsletter-subscriber count.

SMS also has a new plan gate. For subscriptions started on or after May 4, 2026, SMS is available only through Pro as an add-on, with volume pricing starting at $0.007 per message. Free and Standard are therefore email-and-push choices for new accounts, not low-cost SMS plans. Source: Omnisend paid-plan charges.

6. Who should choose GetResponse?

Choose GetResponse when its funnels, landing pages, webinars or creator tools replace another subscription. Starter costs $19/month for up to 1,000 subscribers, so the same minimum applies at 500; its next tier is $29/month for up to 2,500. Paid plans include unlimited email sends, and Starter allows three users. Sources: GetResponse pricing, pricing mechanics, and team limits.

Starter's automation limit is the decisive caveat: one custom workflow with no more than six elements. Marketer starts at $59/month for 1,000 subscribers and unlocks unlimited custom workflows, advanced segmentation and ecommerce-oriented features. Source: GetResponse workflow limits.

GetResponse also counts differently from most rivals. The same email address counts once in every list where it appears, and billing considers both the peak active count and the total contacts added during the month. Deleting and replacing contacts does not create a free way to reuse capacity. This is manageable with disciplined list architecture but expensive when lists are duplicated casually.

Why did Constant Contact miss the top six?

Constant Contact remains a credible specialist for US businesses that value live support, events, social publishing and SMS. Its new Starter Email plan costs $6/month for unlimited contacts and 2,500 monthly sends, but it omits automation, scheduling, SMS, social media and event marketing. Lite starts at $12, Standard at $35 and Premium at $80; useful automation begins higher in the stack and pricing still rises by contact tier. Sources: Constant Contact's current small-business plan summary, plan-feature comparison, and send allowances and overages.

It missed the top six because a comparable automated 2,500-contact setup costs more than MailerLite, Brevo or Moosend, while Omnisend and GetResponse provide more distinctive specialist capabilities. Choose Constant Contact anyway if phone support or integrated events prevents enough operational work to justify the difference.

What should a small business verify before buying?

1. Real billing object: count active subscribers, stored contacts, duplicates across lists and non-subscribers who receive automations under each vendor's definition.
2. Actual sending pattern: model campaigns and automation messages for a normal month and a launch month. “Unlimited” contacts and “unlimited” emails are different benefits.
3. Required automation: build the intended welcome, lead-nurture, cart or win-back flow on paper and verify every trigger and step on the selected plan.
4. Channel ownership: decide whether receipts, password resets and SMS belong in the marketing platform or an ecommerce, booking or transactional system.
5. Consent and data path: verify exactly how forms, CRM, ecommerce and offline systems transfer opt-in source, timestamp and unsubscribe state. Do not import purchased, scraped or assumed-consent lists.

Official MailerLite partner-code offer

Verification-required pilot block: An officially issued MailerLite partner code [CODE] may appear here only after MailerLite confirms in writing that this site may display it publicly and records the exact customer benefit, eligible plans, geography and expiry. Until then, [CODE] is not a live discount and this block is not ready for production publication.

MailerLite's Affiliate Program Terms permit only coupons, promo codes or discounts issued through the program or approved in writing. They also prohibit public display of an offer code without explicit authorization. No placeholder is used for Brevo, Moosend, Mailchimp, Omnisend or Constant Contact because the reviewed registry does not establish an equivalent public-code mechanism. GetResponse can issue a requested partner code, but no exact benefit or public-display approval is available here, so this page makes no GetResponse code claim.

What would change our verdict?

The strongest case against MailerLite is Brevo: its free storage, transactional delivery and SMS can replace multiple tools, while MailerLite may require MailerSend or another provider. If a small business needs those channels, comparing only the email-marketing subscription understates MailerLite's total cost.

Our MailerLite verdict dies if a checkout model using the business's real contacts, campaign volume, transactional messages and SMS shows Brevo has lower total monthly cost and the required automations fit Brevo's selected plan. Verify this with a test account and checkout before purchase, then repeat when the list crosses 2,000 automated contacts.

FAQ

What is the best email marketing software for a small business?

MailerLite is the best default because Comfort combines a $12 entry price, approachable automation, forms, landing pages and websites. Brevo is better for large databases or multichannel messaging; Omnisend is better for ecommerce behavior.

What is the cheapest paid option at 500 contacts?

Brevo Starter and Moosend Pro both start at $9/month. Brevo includes 5,000 monthly emails and multiple messaging channels; Moosend includes unlimited campaigns and broader email automation. The better value depends on send frequency and channel needs.

Which free plan is best for a growing contact database?

Brevo stores up to 100,000 contacts for $0 but limits sending to 300 emails per day and automation to 2,000 contacts. MailerLite and Mailchimp cap free active contacts at 250; Omnisend can upload more but reaches only 250 on Free.

Which platform is best for a small ecommerce store?

Omnisend is the specialist choice because its automation and billing model are designed around product and customer events. Confirm which subscribers and non-subscribers become billable, and note that new accounts need Pro for SMS.

Is there a working MailerLite promo code?

[CODE] is a verification placeholder, not a live offer. It can be published only after MailerLite issues or approves the code in writing and the page states the exact benefit, eligibility and expiry.