Based on our record, Grails should be more popular than Polymail. It has been mentiond 5 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
And frameworks like Grails build conventions and helpers on top of Spring. Source: over 1 year ago
I don't have any direct experience and am only suggesting it because you mentioned RoR...But Grails (https://grails.org/) is basically the JVM version of RoR (Groovy on Rails -> Grails). Source: over 1 year ago
Grails - Spring under the hood. Much less boilerplate. Opinionated, which helps keep things consistent. Uses Spring-Security plugin for authentication. Source: almost 2 years ago
Also, Grails, which a Rails like framework build on Groovy, a JVM scripting language. Source: over 2 years ago
Any JVM language to the rescue here? There’s one, but it’s not the one you’re thinking about. In a sign that this index may not accurately reflect our project reality, Groovy saw a meteoric rise of 0.86% to 1.04% last year! That was good for place 17. Yep, Groovy! Are people writing Gradle plugins in Groovy? Or is Grails having a resurgence? I’m as baffled as you are. - Source: dev.to / about 3 years ago
Polymail - This one is a lot like Twobird but with a lot more features. It's a different type of email client. It's really cool, but the Windows version is just a web app. It's available on iOS as well. Source: over 2 years ago
Ruby on Rails - Ruby on Rails is an open source full-stack web application framework for the Ruby programming...
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.
Django - The Web framework for perfectionists with deadlines
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Meteor - Meteor is a set of new technologies for building top-quality web apps in a fraction of the time.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!