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Top 16 HTML Email Projects
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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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Cerberus
A few simple, but solid patterns for responsive HTML email templates and newsletters. Even in Outlook and Gmail.
Project mention: Show HN: Sendune – open-source HTML email designer | news.ycombinator.com | 2024-07-19OP should have used the patterns from Cerberus: https://github.com/emailmonday/Cerberus
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learn-to-send-email-via-google-script-html-no-server
:email: An Example of using an HTML form (e.g: "Contact Us" on a website) to send Email without a Backend Server (using a Google Script) perfect for static websites that need to collect data.
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bootstrap-email
Bootstrap stylesheet, compiler, and inliner for responsive and consistent emails with the Bootstrap syntax you know and love.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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starter-email-template
A skeleton HTML template of essential design patterns for accessible, responsive emails
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ngx-linkifyjs
Angular V8 wrapper for linkifyjs - library for finding links in plain text and converting them to HTML <a> tags via linkifyjs
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examples
Email testing and SMS verification examples using MailSlurp and a wide range of frameworks. (by mailslurp)
Note you can find all the code for this example on Github
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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).
HTML Email discussion
HTML Email related posts
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Modern email design for web designers
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Rust Rewrite of MJML Responsive Email Framework
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MRML is now MIT licensed
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Show HN: Inbox Zero – open-source email assistant
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Update: I’m building a self-hosted Mailchimp alternative (Keila) and I’ve added one of your most requested features!
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How am I supposed to create html emails?
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Ask HN: Those with money-making side projects,how did you come up with the idea?
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A note from our sponsor - InfluxDB
www.influxdata.com | 21 Jun 2025
Index
What are some of the best open-source Email projects in HTML? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | responsive-html-email-template | 13,547 |
| 2 | Cerberus | 5,094 |
| 3 | learn-to-send-email-via-google-script-html-no-server | 3,186 |
| 4 | emailjs | 2,202 |
| 5 | bootstrap-email | 1,200 |
| 6 | iKy | 898 |
| 7 | letter_opener_web | 761 |
| 8 | bullish | 186 |
| 9 | morningly | 86 |
| 10 | starter-email-template | 55 |
| 11 | smoothie | 46 |
| 12 | yogo | 45 |
| 13 | ngx-linkifyjs | 42 |
| 14 | examples | 27 |
| 15 | GrimeyPhisher | 5 |
| 16 | Web-Setup-Essentials | 2 |
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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.
www.influxdata.com