Best Email Marketing Software: August 2026 Review

Email marketing software is not a form builder. It is not an AI copy stack, and it is not cold outbound.

It is a list, a send, an unsubscribe, and a bill that grows when the list grows, or when the vendor decides a ghost still counts. MailerLite, Brevo, Mailchimp, Kit, and Klaviyo are not rivals for the same meter.

Key Takeaways

• Rank by job, not a single best badge: cheap Active-only list, email-volume billing, incumbent with the unsubscribe trap, creator broadcasts, or ecommerce profiles.
• The market splits five ways: MailerLite, Brevo, Mailchimp, Kit, Klaviyo.
• Stickers hide billing units. MailerLite Comfort starts at $12/mo. Brevo Starter is $9 monthly or $8.08 yearly from 5,000 emails. Mailchimp Essentials is $13 and Standard is $20 at 500 contacts. Kit Newsletter is $0 up to 10,000. Klaviyo Free is 250 profiles and 500 emails/mo.
• CAN-SPAM still applies to B2B. The FTC guide covers every commercial message; each violating email is subject to up to $53,088, with 10 business days to honor an opt-out and a valid physical postal address.
• A signup form is not a list. A form collects the address. This product stores consent, sends, and bills the row.

What email marketing software is (and what it is not)

The product is a closed loop: capture, consent, send, unsubscribe, next send without a lawyer. That is not first-party data strategy (how you own the audience).

Two jobs share the label:

• Newsletter / campaign sender (MailerLite, Brevo, Mailchimp, Kit)
• Ecommerce engine with placed-order events and revenue attribution (Klaviyo)

Buy the first for a Shopify catalog and you rebuild the flows. Buy the second for a weekly founder letter and you pay for profiles you never mail.

How we ranked

Five checks, not a composite score:

• Job fit
• Published price (official pages checked 20 August 2026; annual rates first)
• Billing meter (Active contacts vs emails sent vs all contacts vs profiles)
• Free-tier floor
• Real annual cost at published floors

The ranking: 5 email marketing platforms

1. MailerLite

About the tool

MailerLite is the Active-only list when campaigns and a budget number matter, and you refuse to pay for people who left. Unsubscribed and bounced contacts do not count. Deleted Actives still do until the billing anniversary, so timing a delete against the invoice cycle matters. It is the wrong buy as the Shopify revenue engine. New pricing shipped 16 June 2026.

Main features

• Campaigns, forms, and automations on Free and paid tiers
• Active-subscriber metering (unsubscribes excluded)
• Comfort send cap at 10× the tier ceiling
• Power unlocks unlimited emails (fair use) and seats
• 2 seats and 3 automations on Free; 3 seats and 50 automations on Comfort

Pricing

• Free: $0 for 250 Active subscribers, 2,500 emails/mo, 2 seats, 3 automations, 3 forms
• Comfort: from $12/mo (tiers 500 to 200,000; annual 10% off), 3 seats, 50 automations, send cap 10× tier ceiling
• Power: from $25/mo, unlimited emails (fair use) and seats

Pros

• Unsubscribes stay off the meter
• Comfort is a published sub-$15 automation path
• Clear Active vs deleted timing rule once you know the anniversary trap

Cons

• Deleted Actives still count until the billing anniversary
• Comfort is not unlimited send (that is Power)
• Deleting and re-uploading to dodge the cap violates the terms

2. Brevo

About the tool

Brevo fits when the list is large, the send is rare, and receipts can share the invoice. Starter meters emails, not contacts stored. Automation sits on Standard, not Starter. A 40,000-contact list with one campaign a month can still fit 5,000 emails on Starter, while the same list on Mailchimp is a contact-tier problem before the first send.

Main features

• Email-volume billing across Free, Starter, Standard, and Professional
• Marketing and transactional email on one bill
• Marketing automation and A/B tests from Standard
• Optional logo-off on Starter
• Free daily send cap for light use

Pricing

• Free: 300 emails a day
• Starter: $9/mo, or $8.08 billed yearly, from 5,000 emails
• Logo-off: $10.80 extra
• Standard: $18/mo, or $16.17 yearly (automation, A/B tests)
• Professional: $499/mo, or $449.08 yearly from 150,000 emails, 10 seats

Pros

• Contact storage does not drive the primary meter
• Thin-send fat lists stay cheap on Starter
• Transactional and marketing can share one vendor

Cons

• Starter has no marketing automation (journeys start on Standard)
• Logo-off is an extra line on Starter
• High-volume Professional jumps to a $449+ yearly floor

3. Mailchimp

About the tool

Mailchimp is the incumbent path when the team already knows the editor and Standard automations are the job. Subscribed, unsubscribed, and non-subscribed contacts all count toward the tier. Archived, cleaned, and deleted do not. Essentials at $13 is testing and scheduling, not multi-step automation. The no-card trial caps you at 100 emails until you add payment.

Main features

• Campaign editor with automations that deepen by plan
• Contact metering across subscribed, unsubscribed, and non-subscribed
• Essentials: 4 flow steps, no generative AI
• Standard: up to 200 flows, 5 seats, 12× sends
• Premium: higher contact and send ceilings

Pricing

• Free: 250 contacts, 500 emails/mo (or 250/day), 1 seat, no AI; sending pauses at the cap
• Essentials: $13 at 500 contacts, 5,000 sends (10×), 4 flow steps
• Standard: $20 at 500 contacts, 6,000 sends (12×), 5 seats, up to 200 flows
• Premium: $350 at 10,000 contacts, 150,000 sends (15×)

Pros

• Familiar editor and Standard automation depth for teams already inside
• Archive/clean/delete path can shrink the billed contact set
• Clear Free to Essentials to Standard ladder

Cons

• Unsubscribed and non-subscribed still raise the tier until archived
• Essentials is not multi-step automation
• Trial without a card caps at 100 emails

4. Kit

About the tool

Kit (formerly ConvertKit) is the creator broadcast tool when a newsletter or course list under 10,000 and one automation is enough. Newsletter is $0 with unlimited landing pages and forms, one Visual Automation, and one user. Creator's published price is at 1,000 subscribers, not at the Free cap. It is the wrong buy as a B2B lead-scoring CRM, and one user on Free is the agency deal-breaker.

Main features

• Unlimited broadcasts, landing pages, and forms on Newsletter
• One Visual Automation and one user on Free
• Unlimited automations and A/B subjects on Creator
• Pro unlocks unlimited users
• Digital-product fees on every plan

Pricing

• Newsletter: $0 up to 10,000 subscribers, 1 Visual Automation, 1 user
• Creator: $33/mo, or $390/yr at 1,000 subscribers; unlimited automations, 2 users
• Pro: $66/mo, or $790/yr at 1,000; unlimited users
• Digital-product fees: 3.5% + 30¢ on every plan

Pros

• Strongest free creator broadcast ceiling (10,000) in this ranking
• Clear stay-on-Newsletter path when one automation is the product
• Paid ladder for courses and multi-user teams

Cons

• Free is one automation and one user
• Creator sticker is priced at 1,000, not 10,000
• Not a B2B lead-scoring CRM

5. Klaviyo

About the tool

Klaviyo is the ecommerce profile engine when the catalog sits on Shopify or WooCommerce and the email has to know the cart. Free covers 250 active profiles and 500 emails a month. An active profile is anyone you can still email, regardless of consent status, so checkout without an opt-in still bills. It is the wrong buy as a $0 newsletter host past 250 profiles. Klaviyo's billing help (25 March 2026) typically models about 10× sends against profiles.

Main features

• Profile + send metering for ecommerce flows
• Placed-order events and revenue attribution
• Free mobile credit allotment on the free tier
• Suppression processing that can drop profiles off the bill
• Separate Customer Hub, Helpdesk, and Marketing Analytics SKUs

Pricing

• Free: 250 active profiles, 500 emails/mo, $5 of mobile
• Paid email: profile + send tier (help-center example: about $100/mo at 5,000 profiles / 50,000 emails)
• Customer Hub: $20 (not the email SKU)
• Helpdesk: $10 (not the email SKU)
• Marketing Analytics: separate $100 from 13,500 profiles

Pros

• Built for cart-aware flows and store revenue attribution
• Suppressed profiles can drop off once processed (unlike Mailchimp)
• Clear Free floor for tiny catalogs

Cons

• Checkout ghosts without opt-in still count as active profiles
• Allow about 72 hours for suppression, and stay 24 hours ahead of the cycle
• Marketing Analytics and Hub/Helpdesk are separate invoices

Worked annual cost at published floors

Assumptions: U.S. company, annual billing where published. MailerLite Comfort floor. Brevo yearly. Mailchimp Standard at the 500-contact sticker. Kit Newsletter until 10,000. Klaviyo Free until 250; the 5,000-profile help-center example after that.

At 10,000 broadcast names and one automation, Kit Newsletter is $0 and Mailchimp Premium's 10,000-contact sticker is $350 a month. That is a meter gap, not a quality gap. At 5,000 store profiles, Klaviyo's own example is $1,200 a year before SMS or Analytics.

When it breaks

The billing unit is not the job:

• MailerLite meters Active (unsubscribes off; deleted Actives on until the anniversary)
• Mailchimp meters subscribed + unsubscribed + non-subscribed
• Brevo meters emails
• Kit meters subscribers with a 10,000 free cap
• Klaviyo meters profiles you can still email

An unsubscribe that still costs money is a Mailchimp problem until you archive. Starter without journeys is a Brevo Starter trap. A Shopify storefront is not a newsletter: Klaviyo mails the cart; Kit and MailerLite host the letter.

CAN-SPAM is not a footer plugin. No B2B exception, 10 business days to honor opt-out, mechanism live 30 days after the send, truthful From/subject, physical postal address, up to $53,088 per violating email.

Best Firms' take

Best Firms' take: buy the meter that matches the email job. MailerLite when Actives-only and Comfort from $12 is enough. Brevo when you bill emails sent and will move to Standard for journeys. Mailchimp when the team already lives there and will archive the dead before Standard at $20. Kit when creator broadcasts under 10,000 and one automation are the product. Klaviyo when the email has to know the cart and you accept a profile tier. Treating all five as interchangeable "$15 email" options is how finance pays for unsubscribes, checkout ghosts, or a Premium contact tier that was never the job.

Named downside: the meter you ignore is the one that moves. Fail the meter, change lanes.

Frequently Asked Questions

What is the best email marketing software in 2026?

There is not one. MailerLite Comfort from $12 for an Active-only list. Brevo Starter at $8.08 yearly when you bill emails (Standard at $16.17 for automation). Mailchimp Standard at $20 when you are already there and will archive the dead. Kit Newsletter at $0 up to 10,000 with one automation. Klaviyo when the email has to know the cart.

Does Mailchimp charge for unsubscribed contacts?

Yes. Official help: subscribed, unsubscribed, and non-subscribed contacts count toward the monthly contact limit. Archived, cleaned, and deleted do not. MailerLite counts only Active. Klaviyo drops suppressed profiles after processing.

Is there a good free email marketing plan?

Kit Newsletter: 10,000 subscribers, one automation, one user. MailerLite Free: 250 Active, 2,500 emails. Mailchimp Free: 250 contacts, 500 emails. Brevo Free: 300 emails a day. Klaviyo Free: 250 profiles, 500 emails. A Gmail BCC is not email marketing software.

How is ecommerce email different from a newsletter?

A newsletter is a send to a list. Ecommerce email is a flow fired by checkout events, with revenue on the campaign. Klaviyo is built for the second. Kit and MailerLite host the first.

Closing

Monday move: write the job first.

1. Weekly newsletter, B2B nurture, or store flows tied to orders
2. Newsletter, cheap, unsubscribes off the bill: MailerLite Comfort from $12 (Free only if 250 Active and 2,500 emails is the ceiling)
3. Fat list, thin send, receipts on the same invoice: Brevo Starter at $8.08 yearly (Standard at $16.17 when you need a journey)
4. Already in Mailchimp: Standard at $20 if you need automations; archive unsubscribed and non-subscribed
5. Creator list under 10,000, one automation: Kit Newsletter at $0 (Creator at $390/yr when sequences are the product)
6. Shopify / WooCommerce catalog: Klaviyo (Free until 250 profiles; budget the profile tier)
7. Confirm the footer: physical address, working opt-out, 10-business-day honor window

Fail the meter, change lanes.