Development

Mailsync Development Development of Mailsync, Mailspring’s C++ core. Localization Mailspring translation and localization. Mailspring Development Development of the actual Mailspring app. Plugins Development Development of Mailspring plugins. Themes Development Development of Mailspring themes.

Topic	Replies	Views	Activity
Contribution Workflow Development meta-documentation We use Discourse for bug reports, feature suggestions, and all discussion thereof. When it’s time to work, however, we use GitHub for actual development. If you want to work on an issue, here’s the workflow: Step 1: Cr…	1	1085	February 25, 2021
About the Development category Development	1	908	January 12, 2021
Mailspring on ChromeOS Development google , linux	0	9	June 10, 2026
Building on Windows Mailspring Development windows	5	1246	February 17, 2026
Calendar Release Date? Development calendar	5	2503	January 12, 2026
File and Folder Backup Progress? Mailsync Development windows	1	43	January 1, 2026
Localization issues Localization	0	35	December 1, 2025
How to customise/override `email-frame.less` or inject styles inside the message iframe? Themes Development message-viewer	2	692	August 29, 2025
Theme Starter theme does not fix dark body view like the builtin dark theme Themes Development	0	93	August 22, 2025
Found Plugin/Encryption Icons in static Folder – But Where’s the Code Behind Them? Development	0	86	August 5, 2025
STILL no update on creating groups and importing contacts? Development	0	142	June 13, 2025
I want Help : Custom Plugin to Auto-Tag Incoming Emails Based on Keywords? Development	0	266	April 21, 2025
Where do things live on Linux? Themes Development	2	1150	October 28, 2024
Is this project dead? Development	23	5498	October 25, 2024
Error when attempting to run mailspring from source Development windows	2	363	September 4, 2024
Custom theme (dark) does not inject css into the email body (iframe) Themes Development theme	2	1928	September 3, 2024
Starred folder with counts Plugins Development	1	852	June 18, 2024
Where is the macos share extension implemented? Development macos	0	479	June 7, 2024
Could Someone Give me Advice on Implementing Custom Email Templates in Mailspring? Development	1	495	May 7, 2024
[pl-PL] polish localization improvement Localization	1	505	January 9, 2024
Development question Development	2	508	November 14, 2023
Plugin for TeX math formula rendering with MathJax Plugins Development interface , message-viewer	0	579	August 12, 2023
Need help for reimplementation of the Mailspring API Development	1	873	March 18, 2023
"Mailspring could not find the mailsync process" in dev build Development	4	1901	October 29, 2022
Contribute to Calendar Development calendar	2	1159	October 8, 2022
Feedback/code review on two light themes? Themes Development theme , interface	1	1122	July 31, 2022
How To Build Mailsync? Mailsync Development meta-documentation	0	1280	February 8, 2021
Developer Tools not appearing Themes Development	1	655	April 22, 2022
Deleting a group of mails Development	0	497	April 1, 2022
Backup user files can skip which mailspring files? Development	3	801	March 13, 2022