The system was designed primarily for internal and B2B communication, supporting sales and partnership outreach<\/strong> where transparency, data control, and simplicity were more important than complex marketing automation features. Given C-Sunshine\u2019s technical focus and emphasis on data-driven decision-making, the solution had to be reliable, auditable, and easily extensible within their existing technical ecosystem.<\/p>\n\n\n\n The main challenge was to design a solution that would:<\/p>\n\n\n\n A key constraint was that no customer or interaction data should be deleted<\/strong>, and the system should avoid over-engineering.<\/p>\n\n\n\n Mail system architecture scheme<\/em><\/p>\n\n\n\n We designed and implemented a custom mailing system<\/strong> composed of three tightly connected layers: infrastructure, backend & data, and analytics.<\/p>\n\n\n\n Emails are sent from a dedicated internal mail server<\/strong>. Each email contains tracking links with unique tokens<\/strong>, allowing precise identification of recipients and their interactions.<\/p>\n\n\n\n A lightweight PHP backend (Laravel\/Nette-compatible) was built on top of a PostgreSQL database<\/strong>.<\/p>\n\n\n\n The database structure includes:<\/p>\n\n\n\n The admin interface allows:<\/p>\n\n\n\n No deletion logic or complex workflows were introduced, keeping the system intentionally simple and robust. Mail server hosting was established using WebSupport, while adopting open source interface Roundcube on top.<\/p>\n\n\n\n Preview of mail system deployed into production<\/em><\/p>\n\n\n\n Each tracked interaction is forwarded from the backend to Google Tag Manager<\/strong>, which then propagates events into Google Analytics<\/strong>. This enables correlation between:<\/p>\n\n\n\n As a result, email performance can be analyzed directly within the existing analytics stack used by C-Sunshine.<\/p>\n\n\n\n Great team to work with. Highly professional. They genuinely love what they do, and it shows in the quality of their work.<\/a> Following the successful delivery of the mailing system, our cooperation with C-Sunshine naturally expanded into their sales and business development operations<\/strong>. The solution became an integral part of their internal workflow and has been actively used by our own team as well, allowing us to directly experience, refine, and optimize the system in real-world sales scenarios. Over the years, we have continued to support C-Sunshine by automating business development outreach,<\/strong> streamlining sales processes, and helping identify new revenue opportunities.<\/strong> What began as a technical implementation evolved into a long-term partnership focused on scalable sales growth, data-driven decision-making, and continuous improvement of their commercial operations.<\/p>\n\n\n\n We\u2019re happy to help you design and build a tailored system that fits your technical and business needs. Fill out the form <\/a><\/strong>here<\/strong><\/a>, and we’ll get back to you soon!<\/p>\n","protected":false},"excerpt":{"rendered":" Context C-Sunshine is a software company specializing in custom e-commerce solutions, development capacity outsourcing, data analytics, and full-stack engineering. As part of their own growth and ongoing business development activities, they needed a fully self-hosted mailing system running on a dedicated internal mail server, without relying on external SaaS tools. The primary goal was to […]<\/p>\n","protected":false},"author":11,"featured_media":974,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[5,16],"class_list":["post-956","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-software-development","tag-web-development"],"_links":{"self":[{"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/posts\/956","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/comments?post=956"}],"version-history":[{"count":20,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/posts\/956\/revisions"}],"predecessor-version":[{"id":1221,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/posts\/956\/revisions\/1221"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/media\/974"}],"wp:attachment":[{"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/media?parent=956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/categories?post=956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/project.revolware.com\/case-studies\/wp-json\/wp\/v2\/tags?post=956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Challenge<\/h2>\n\n\n\n
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![\"\"](\"https:\/\/project.revolware.com\/case-studies\/wp-content\/uploads\/sites\/3\/2026\/01\/ChatGPT-Image-20.-1.-2026-17_00_07-2-1024x307.png\")
<\/figure>\n\n\n\nSolution<\/h2>\n\n\n\n
Mailing Infrastructure<\/strong><\/h3>\n\n\n\n
Backend & Data Layer<\/strong><\/h3>\n\n\n\n
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![\"\"](\"https:\/\/project.revolware.com\/case-studies\/wp-content\/uploads\/sites\/3\/2026\/01\/C-Sunshine_Screenshot-1-1.png\")
<\/figure>\n\n\n\nAnalytics integration<\/h2>\n\n\n\n
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Client reference<\/h2>\n\n\n\n
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– Jozef Szadvari<\/strong>, CEO at C-Sunshine<\/p>\n\n\n![\"\"](\"https:\/\/project.revolware.com\/case-studies\/wp-content\/uploads\/sites\/3\/2026\/01\/image-20-1024x341.png\")
Automation of client business development<\/h2>\n\n\n\n
Looking for a similar solution?<\/h3>\n\n\n\n