What is the difference between MailerLite and Plunk?

MailerLite is best for Small businesses and creators wanting simple email, while Plunk is best for Developers wanting open-source transactional email. MailerLite starts at Free and Plunk starts at Free.

Is MailerLite or Plunk cheaper?

MailerLite starts at Free with a free tier. Plunk starts at Free and is free.

Is there a free alternative to Plunk?

Both MailerLite and Plunk offer free tiers.

MailerLite vs Plunk

MailerLite is email marketing platform with landing pages, automations, and a generous free tier, while Plunk is open-source email platform for transactional and marketing emails with automation. Plunk is open source and can be self-hosted, giving you full control over your data. MailerLite is built for small businesses and creators wanting simple email, whereas Plunk targets developers wanting open-source transactional email.

At a glance

	MailerLite	Plunk
Best for	Small businesses and creators wanting simple email	Developers wanting open-source transactional email
Starting price	Free	Free
Free tier	✓	✓
Open source	—	✓
Free tier available	✓	✓
Open source	—	✓
Analytics	—	✓
Automations	✓	✓
Email Campaigns	✓	—
Landing Pages	✓	—
Open Source	—	✓
Surveys	✓	—
Transactional	—	✓

MailerLite

Strengths

Includes Email Campaigns as a core feature, purpose-built for email marketing workflows
Includes Landing Pages as a core feature, purpose-built for email marketing workflows
Free for 1000 subscribers — generous enough for most small teams to get real work done
Established product with 16+ years on the market and a mature ecosystem

Weaknesses

Free plan exists but key features are locked behind the paid upgrade
Fewer built-in features means you may need additional tools to cover gaps
Deliverability depends on your sender reputation, which takes time to build
Limited team/admin features if your organization eventually scales up

Try MailerLite → Full review

Plunk

Strengths

Open source and transparent
Open-source codebase gives you full transparency and community-driven development
Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
The core product is free with no paywalled essentials

Weaknesses

May lack some advanced features
Self-hosting is free but requires server maintenance and DevOps knowledge
Fewer built-in features means you may need additional tools to cover gaps
Deliverability depends on your sender reputation, which takes time to build

Try Plunk → Full review

The bottom line

Pricing: Both MailerLite and Plunk are free. You can try both without spending a dollar.

Feature gaps: MailerLite offers Email Campaigns, Landing Pages and Surveys that Plunk lacks. Plunk brings Analytics, Open Source and Transactional that MailerLite does not have. Both share Automations.

Team fit: MailerLite is geared toward individual users and small setups, while Plunk is aimed at small teams teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.

Open source: Plunk is open source, meaning you can self-host, audit the code, and avoid vendor lock-in. MailerLite is proprietary — you are trusting the vendor with your data and uptime.

Where each tool shines: MailerLite's biggest strengths are: includes email campaigns as a core feature, purpose-built for email marketing workflows. includes landing pages as a core feature, purpose-built for email marketing workflows. Plunk's biggest strengths are: open source and transparent. open-source codebase gives you full transparency and community-driven development.

Watch out for: With MailerLite, users commonly note that free plan exists but key features are locked behind the paid upgrade. With Plunk, the main complaint is that may lack some advanced features.

Choose MailerLite if...

You need a tool built for small businesses and creators wanting simple email
You specifically need Email Campaigns and Landing Pages
You care about includes landing pages as a core feature, purpose-built for email marketing workflows
Your team size fits the individuals profile MailerLite is designed for
The free tier works for you: free for 1000 subscribers

Choose Plunk if...

Your profile matches its sweet spot: developers wanting open-source transactional email
You need self-hosting, data sovereignty, or the ability to audit source code
You specifically need Analytics and Open Source
You care about open-source codebase gives you full transparency and community-driven development
Your team size fits the small teams profile Plunk is designed for