Choose Mailchimp if you want polished templates and strong content tools; choose Brevo if you want cheaper contact storage, SMS, and automation that feels more sales focused. Both can lift campaign engagement. The winner depends on how you send. Email still pays well, with an often cited return of $36 for every $1 spent [source: Litmus]. So yes, picking the right tool matters.

TLDR: Mailchimp is great for small teams that want pretty emails, easy A/B tests, and clean reports. Brevo is better when you have lots of contacts, want email plus SMS, or need automation without paying for every subscriber. For example, a shop with 18,000 contacts sending only 4 campaigns per month may save more with Brevo, while a creator with 2,000 fans may get better engagement from Mailchimp’s design tools. If your open rate is stuck at 18%, start with subject line tests, list cleanup, and better segments before blaming the platform.

Mailchimp vs Brevo: the quick vibe check

Mailchimp feels like the friendly email studio. It is built for newsletters, product updates, launch emails, and simple customer journeys. It is colorful. It is polished. It gives you a lot of hand-holding.

Brevo, once called Sendinblue, feels more like a practical growth toolbox. It brings email, SMS, WhatsApp, chat, forms, CRM, and automation into one place. It is less shiny in spots. But it can be very useful.

The real question is not, “Which platform is better?” The better question is, “Which one will help my audience click more often?”

1. Use segmentation before you touch design

Want better engagement? Stop sending the same email to everyone. It is the email version of shouting into a bus.

Both Mailchimp and Brevo offer segmentation. This is where engagement starts.

• Mailchimp: Great for behavior-based groups, purchase history, tags, and predicted demographics on some plans.
• Brevo: Strong for contact attributes, behavior, scoring, and automation triggers.

Simple segments can work wonders:

• New subscribers
• Recent buyers
• People who clicked in the last 30 days
• People who never open
• VIP customers

Here is a simple move. Send your best offer only to people who clicked before. Send a softer “still interested?” email to cold contacts. That alone can lift click rates without changing one button color.

2. Mailchimp wins for easy design

Mailchimp is very good at making emails look nice fast. The editor is simple. Templates are clean. Blocks are easy to move. You can build a decent newsletter while half-watching your coffee machine.

This matters because ugly emails can hurt trust. A messy email screams, “We made this in panic mode.”

Use Mailchimp if you need:

• Newsletter templates
• Brand kits
• Product blocks
• Simple image editing
• Prebuilt layouts for promos

It drives me crazy that some email tools make a two-column layout feel like plumbing work. Mailchimp usually avoids that pain. Not always. But often enough.

3. Brevo wins on contact-heavy lists

Brevo’s pricing style can be friendly if you have many contacts but do not email them every day. Many platforms charge based on contact count. Brevo often focuses more on email volume, depending on plan.

That can be a big deal.

Imagine you have 25,000 contacts. You only send two campaigns a month. With some tools, you still pay like you are emailing them nonstop. Honestly, it feels like paying rent for chairs nobody sits in.

Brevo can be a smart pick for:

• B2B lists with long sales cycles
• Local service businesses
• Ecommerce stores with large customer files
• Brands that mix email and SMS

4. Automation: Mailchimp is smoother, Brevo goes wider

Automation is where engagement gets fun. You can send emails based on actions. Not guesses.

A good welcome sequence can beat a random newsletter any day. A cart reminder can recover sales. A reactivation email can bring quiet subscribers back.

Mailchimp’s customer journeys are easy to understand. You can create flows like:

• Subscriber joins list
• Wait 1 day
• Send welcome email
• If they click, send offer
• If they do not click, send helpful guide

Brevo also has strong automation. It may feel less glossy. But it supports useful workflows across email, SMS, CRM tasks, and contact updates.

Use Mailchimp if you want easier setup. Use Brevo if your journey includes more than email.

5. A/B testing: small tests, big wins

A/B testing is simple. You test version A against version B. The audience votes with opens and clicks.

Start with subject lines. They affect opens. Then test preview text. Then test calls to action.

Good tests:

• Subject line A: “Your 20% code ends tonight”
• Subject line B: “Still thinking it over?”
• Button A: “Shop now”
• Button B: “See the picks”

Mailchimp makes A/B testing feel very approachable. Brevo supports testing too, though the experience can feel more plain. That is fine. Plain can still make money.

Do not test five things at once. You will learn nothing. Test one thing. Wait. Read the numbers. Repeat.

6. Reports: watch clicks, not just opens

Open rates are useful. But they are not perfect. Privacy tools can inflate or hide opens. Clicks are better. Sales are best.

Track these numbers:

• Open rate: Did people notice?
• Click rate: Did people care?
• Conversion rate: Did people act?
• Unsubscribes: Did you annoy them?
• Spam complaints: Did you really annoy them?

Mailchimp reports are easy to read. Brevo reports are practical and clear enough. Mailchimp feels better for visual campaign review. Brevo feels better when you want to connect activity to contacts and follow-up steps.

7. Deliverability: boring, but vital

If your emails land in spam, your design does not matter. Your clever subject line is just yelling from a locked basement.

Both platforms give you tools to improve deliverability. But you still need good habits.

• Verify your domain.
• Set up SPF, DKIM, and DMARC.
• Remove dead contacts.
• Avoid spammy words in subject lines.
• Do not buy email lists. Ever.

A clean list of 5,000 engaged people beats a dusty list of 50,000 ghosts. Every time.

8. Best tips for higher campaign engagement

Use these with either platform.

• Write like a human. Short lines. Clear asks. No corporate fog.
• Put one main call to action. Too many buttons create choice soup.
• Send at the right time. Test mornings, lunch, and evenings.
• Clean your list monthly. Dead contacts drag results down.
• Use preview text. It is free inbox real estate.
• Personalize with care. “Hi Sarah” is fine. “We saw you browsing socks at 2:13 AM” is creepy.
• Make mobile the default. Most people will read with one thumb.

Which one should you pick?

Pick Mailchimp if your team cares about simple design, quick newsletters, beginner-friendly testing, and clean campaign reports. It is a strong pick for creators, small ecommerce stores, nonprofits, and teams that want less setup pain.

Pick Brevo if you want more channels, helpful automation, broad contact storage, and a pricing model that may fit larger lists. It works well for service businesses, B2B teams, and stores that use both email and SMS.

Here is the simple truth. Better engagement rarely comes from switching tools alone. It comes from sending better emails to better groups at better times. Mailchimp can help you make those emails prettier. Brevo can help you build wider customer journeys. Choose the one that removes more friction from your week.

Final pick: For most beginners, start with Mailchimp. For growing lists and multi-channel campaigns, test Brevo. Then watch your clicks. The clicks will tell you who won.