Brevo vs Mailchimp for Solo Developers

Quick Comparison

Brevo Overview

Brevo (formerly Sendinblue) is the European email marketing platform that has quietly become the favored Mailchimp alternative for indie creators and solo developers. The pricing is based on emails sent per month, not contacts on your list, which is a friendlier model for anyone with a large but lightly-emailed audience.

Beyond marketing email, Brevo includes transactional email via SMTP and API, SMS marketing, a simple CRM, landing pages, and basic automations. For a solo dev who needs both newsletter and transactional sending, getting both under one account at one bill is genuinely convenient.

The free tier allows 300 emails per day forever, which is enough for early-stage projects to run their full email stack without paying anything. Paid plans start at $9/mo for 5,000 emails. Compared to Mailchimp's contact-based pricing, Brevo gets dramatically cheaper as your list grows.

Mailchimp Overview

Mailchimp is the legacy default that most non-technical users still think of when they hear "email marketing". The UI is polished, the template library is enormous, and there are tutorials for everything. For non-technical small business owners, Mailchimp is the obvious starting point and that ecosystem of familiarity has real value.

Mailchimp charges based on contact count rather than emails sent. The free tier covers 500 contacts. The Essentials plan starts at $13/mo for 500 contacts and scales up as your list grows. By 5,000 contacts you're paying around $75/mo, and by 50,000 you're well over $300/mo.

The product itself is fine. Automations, landing pages, signup forms, basic CRM features, segmentation, and A/B testing all exist. Nothing is exceptional, but nothing is broken. The brand recognition and template library are the real moat.

Key Differences

The pricing models reward different usage patterns. Mailchimp charges by contact, so a 50,000-person list costs the same whether you email it daily or once a quarter. Brevo charges by email sent, so a large list you email rarely is cheap, while a small list you email constantly might cost more. For most solo dev newsletters, Brevo ends up much cheaper because send frequency stays moderate.

Brevo includes transactional email as a first-class feature. If you need to send password resets, order confirmations, and welcome emails from your app, Brevo handles both transactional and marketing email under one account. Mailchimp offers Mandrill as a paid add-on for transactional, but the integration feels bolted on. For solo devs who want one provider for everything, Brevo wins clearly.

Mailchimp's template ecosystem is much larger. If you're not a designer and you want pre-built newsletter templates that look professional, Mailchimp has more options and they're more polished. Brevo's templates are good but fewer. For non-design-savvy solo devs, this matters more than it sounds.

Deliverability is solid on both. Both platforms maintain good sender reputations and offer proper SPF, DKIM, and DMARC setup. There's no meaningful deliverability gap for normal use cases. Anyone telling you otherwise is usually selling the other platform.

API and developer integration favor Brevo. Brevo's API is more developer-friendly and the transactional email integration is straightforward. Mailchimp's API works but feels like it was built for marketers consuming developer tools rather than developers consuming marketing tools. For a solo dev wiring up their stack, Brevo gets out of the way faster.

When to Choose Brevo

• You need both marketing and transactional email under one account
• Your list is large but you email it moderately, not daily
• You want pricing that grows slowly as your list grows
• You're a developer wiring email into your app via API
• SMS or CRM features might be useful to you down the line

When to Choose Mailchimp

• You want the absolute largest template library available
• Non-technical collaborators will be using the tool with you
• Your audience is small but you email them very frequently
• You're already invested in the Mailchimp ecosystem
• Brand familiarity matters for explaining the tool to clients

The Verdict

For most solo developers in 2026, Brevo is the clear winner. The pricing is friendlier as you grow, transactional email is included, and the API is genuinely pleasant to integrate. A solo dev who picks Brevo at the start and grows to 20,000 subscribers will pay something like a tenth of what the same growth costs on Mailchimp.

Mailchimp still has its place. If you're handing the tool off to a non-technical co-founder, or you genuinely need the largest possible template library, or your audience is small but you mail them daily, Mailchimp's pricing model might work out fine. The product is competent and the ecosystem is huge.

The honest answer is that for any solo dev building something that might grow, Brevo is the safer long-term bet. The pricing trajectory is gentler, the feature bundle is wider, and the developer experience is better. Mailchimp is what you choose when familiarity matters more than economics. Brevo is what you choose when economics matter at all.