postcss-css-variables vs premailer-rails

postcss-css-variables

PostCSS plugin to transform CSS Custom Properties(CSS variables) syntax into a static representation (by MadLittleMods)

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madlittlemods.github.io

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premailer-rails

CSS styled emails without the hassle. (by fphilipe)

Email CSS inline-css Rails Ruby Gem

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postcss-css-variables		premailer-rails
	Project
1	Mentions	3
534	Stars	1,662
-	Growth	-
1.7	Activity	0.0
8 months ago	Latest Commit	6 months ago
JavaScript	Language	Ruby
GNU General Public License v3.0 or later	License	MIT License

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

postcss-css-variables

Posts with mentions or reviews of postcss-css-variables. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-02-16.

How to Inline CSS Styles in Email Mailers Using premailer-rails (Video)
2 projects | /r/rails | 16 Feb 2021

More recently, I started using postcss-css-variables to convert CSS variables into values so I can use modern CSS frameworks like Bootstrap 5 & Tailwind within my mailers.

premailer-rails

Posts with mentions or reviews of premailer-rails. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-01-17.

Why are "already initialized constant" warnings so common?
2 projects | /r/rails | 17 Jan 2023
How to Send Tailwindcss-Styled Emails With Ruby on Rails 7
1 project | dev.to | 14 Nov 2022

But this won't work in Rails out of the box. Unless you create your layouts using HTML tables and use something like the premailer-rails gem to inline your CSS (I haven't tried this approach).
How to Inline CSS Styles in Email Mailers Using premailer-rails (Video)
2 projects | /r/rails | 16 Feb 2021

I like using premailer-rails to inline the CSS in my Mailer, which allows me to have super clean views while supporting old Email clients (like Outlook).

What are some alternatives?

When comparing postcss-css-variables and premailer-rails you can also consider the following projects:

roadie-rails - Making HTML emails comfortable for the Rails rockstars

Roadie - Making HTML emails comfortable for the Ruby rockstars

LetterOpener - Preview mail in the browser instead of sending.

MailCatcher - Catches mail and serves it through a dream.

Griddler - Simplify receiving email in Rails

Ahoy Email - First-party email analytics for Rails

Markerb

Sup - A curses threads-with-tags style email client (mailing list: [email protected])

Pony - The express way to send mail from Ruby.

Truemail - 🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.

Maily - 📫 Rails Engine to preview emails in the browser