emailjs
Send text/HTML emails with attachments to any SMTP server.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is emailjs?
EmailJS is a lightweight library that allows developers to send text and HTML emails, including attachments, to any SMTP server. It simplifies the process of integrating email functionality into applications without requiring complex setup or configuration.
Key differentiator
“EmailJS stands out as a simple, open-source library that developers can easily integrate into their projects to handle SMTP-based email sending without the need for extensive setup.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Official documentation lacks comprehensive guides and real-world usage examples
Few active contributors on GitHub, low activity in forums and Q&A sites
Previous version updates introduced breaking changes without deprecation warnings
Fit analysis
Who is it for?
✓ Best for
Developers building server-side applications that require sending emails with attachments
Projects needing a lightweight and easy-to-integrate solution for SMTP-based email sending
✕ Not a fit for
Applications requiring complex email templates or advanced email marketing features
Use cases where cloud-based email services offer more suitable solutions
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Alternatives
Integrations
Next step
Get Started with emailjs
Step-by-step setup guide with code examples and common gotchas.