

We believe that you’ll love Mailspring and want to use it indefinitely, and that keeping it working indefinitely will require continued development! We don’t want to sell you a lifetime plan, maintain the app for a few years until purchases fall off and then stop working on it. Many subscription apps offer lifetime options because they 1) assume you will use the app for X years and stop, leaving them with a net profit, 2) have no usage-based costs that could surpass the one-time purchase or 3) only plan to support the product for X years, after which development will stop. Many of the features of Mailspring Pro use underlying APIs that cost money on a per-use basis (automatic email translation and contact profiles being the most expensive two), and our plan for ongoing development requires ongoing revenue. Mailspring: The open-source, extensible email app for Mac, Linux, and Windows with open tracking, link click tracking, contacts enrichment data and more. Unfortunately at this time we’ve decided not to offer a one-time (lifetime) purchase option. It uses roughly half the RAM and CPU of Nylas Mail and idles with almost zero 'CPU Wakes', which translates to great. It's faster, leaner, and shipping today It replaces the JavaScript sync code in Nylas Mail with a new C++ sync engine based on Mailcore2.


#Mailspring organization upgrade#
Thanks for your interest in Mailspring! We’d love for you to upgrade to Mailspring Pro. Mailspring is a new version of Nylas Mail maintained by one of the original authors. Check out CONTRIBUTING.md to get started Mailspring's sync engine is spawned by the Electron application and runs locally on your computer. There is no lifetime plan, quoted from that page: Mailspring's UI is open source (GPLv3) and written in TypeScript with Electron and React - it's built on a plugin architecture and was designed to be easy to extend. However, if you or your organization prefers annual billing, an annual plan is also available at a 11% discount! ($85 USD / year) By default, Mailspring Pro subscriptions are billed monthly.
