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Top 23 JavaScript Email Projects
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Sevalla
Deploy and host your apps and databases, now with $50 credit! Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!
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Try using the mjml package. Nope, tries to use Node's fs and path. ❌
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First of all, I take nodemailer as a dependency to send an email and check it.
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Mailspring
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
Project mention: Mailspring: Cross-platform, fast, open source mail client | news.ycombinator.com | 2025-02-02 -
Project mention: Self-hosting like a final boss: what I actually run on my home lab (and why) | dev.to | 2025-06-19
Mailcow / Mailu
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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email-templates
Create, preview (browser/iOS Simulator), and send custom email templates for Node.js. Made for @forwardemail, @ladjs, @cabinjs, @spamscanner, and @breejs.
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Not the answer you were looking for, but `juice` makes it possible.
https://github.com/Automattic/juice
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Setting up DKIM may sound technical, but modern email providers (ESP) and services have made it straightforward. As a SaaS company, you’ll typically use an email sending service (like Sidemail, SendGrid, Mailgun, etc.) or your own mail server to send emails. Let’s break down the setup process:
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waveboxapp
Wavebox, the revolutionary and feature-rich Chromium browser that's built for productive working across Google Workspaces, Microsoft Teams, ClickUp, Monday, Atlassian, Asana, AirTable, Slack, and every other web app you use to get work done.
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forwardemail.net
Privacy-focused encrypted email for everyone. All-in-one alternative to Gmail + Mailchimp + Sendgrid.
forwardemail.net to handle inbound mail
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nextacular
An open-source starter kit that will help you build full-stack multi-tenant SaaS platforms efficiently and help you focus on developing your core SaaS features. Built on top of popular and modern technologies such as Next JS, Tailwind, Prisma, and Stripe.
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thunderbird-conversations
An extension for Thunderbird that allows you to view threads as "real" conversations, including your own emails. This extension also adds a bunch of useful UI features in the conversation view.
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disposable-email-domains
Daily updated repository for https://github.com/disposable/disposable (by disposable)
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SaaSHub
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript Email discussion
JavaScript Email related posts
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Thunderbird Pro August 2025 Update
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Send and Receive Custom Domain Emails for Free
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The World's Largest Disposable Email Domain List – How We Keep It Updated
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Setting up mailcow on mail server on an EC2 instance
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Mozilla launching "Thundermail" email service to take on Gmail, Microsoft 365
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Using MJML in Google Apps Script to Send Beautiful Emails
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Ask HN: Replacement for Rackspace SMTP Hosting?
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A note from our sponsor - SaaSHub
www.saashub.com | 1 Sep 2025
Index
What are some of the best open-source Email projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | N1 | 24,819 |
| 2 | MJML | 17,618 |
| 3 | Nodemailer | 17,208 |
| 4 | Mailspring | 16,593 |
| 5 | Mailcow | 11,050 |
| 6 | Mailtrain | 5,671 |
| 7 | Haraka | 5,356 |
| 8 | email-templates | 3,706 |
| 9 | mailwind | 3,212 |
| 10 | juice | 3,195 |
| 11 | sendgrid-nodejs | 3,037 |
| 12 | wildduck | 2,027 |
| 13 | linkifyjs | 2,003 |
| 14 | aws-lambda-ses-forwarder | 1,716 |
| 15 | node-html-to-text | 1,665 |
| 16 | waveboxapp | 1,358 |
| 17 | forwardemail.net | 1,335 |
| 18 | nextacular | 1,216 |
| 19 | mjml-react | 993 |
| 20 | sieve | 827 |
| 21 | thunderbird-conversations | 676 |
| 22 | Mailsy | 544 |
| 23 | disposable-email-domains | 532 |
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