I'm new in Magento 2 and I learning it now. I am trying to customize email templates by editing default /app/design/frontend/Vendor/Theme/web/css/email-inline.less file in my theme, but I not understand one thing.

When I commented all lines in this file (and deleted @magento_import), I clear cache and deploy static files for my theme:

grunt clean:Theme && php bin/magento setup:static-content:deploy

After this command invoked successfully, I checked files email-inline.less and email-inline.css in /pub/static/frontend/Vendor/Theme/Locale/css/ directory.

File email-inline.less same as in my theme, but email-inline.css for some reason is not empty.

Why does it happen?

  • have you tried grunt less:your_theme ? Jun 30, 2017 at 8:29
  • and are you sure this directory is correct pub/static/frontend/Vendor/Theme/Locale/css ? Jun 30, 2017 at 8:31
  • Yes, of course, this right Jun 30, 2017 at 9:17

2 Answers 2


Try to compile one time all themes:

grunt clean && grunt exec && grunt less

Or just on your theme grunt clean:mytheme && grunt exec:mytheme && grunt less:mytheme,

grunt:exec copies in var/view_preprocessed files from Magento 2 project (vendor, app/, lib, ..)

  • grunt less do same setup:static-content:deploy. I not right? Jun 30, 2017 at 8:42
  • Try to compile everything to all themes. I had fixed a similar issue with it. grunt:exec is the most important command. I find running grunt commands more stable. Jun 30, 2017 at 10:36
  • I configured grunt and this work great! Thanks! Jun 30, 2017 at 12:14

Put all your email styles in


now you need to deploy changes. You can do this via

php bin/magento setup:static-content:deploy

or use grunt

grunt less:your_theme

if you get error about missing files you need to run

grunt exec:your_theme

don't forget your_theme should be under


Here is more information http://devdocs.magento.com/guides/v2.1/frontend-dev-guide/css-topics/css_debug.html

NOTICE. if you still do not see changes it could be just cache issue. To prevent this you need re-deploy with Sign enabled. http://docs.magento.com/m2/ce/user_guide/system/static-file-signature.html

  • This is clear, but I not understand why email-inline.css compiled with a empty email-inline.less Jun 30, 2017 at 9:10
  • Are you sure you have no compilation errors? Magento use both files email.less and email-inline.less in Less Processor to collect styles from modules and themes including inherited Jun 30, 2017 at 9:18
  • not sure where is the issue ... here is quick solution... 1. enable developer mode 2. remove email files in pub/static/frontend/...../css/email.css and email-inline.css 3. then just call both files in browser directly. Magento should compile your file on the fly. Jun 30, 2017 at 9:21
  • No, compile on the fly not works. But I found reason of issue: less files cached in /var/view_preprocessed directory and if run grunt clean:var before setup:static-content:deploy - is problem not repeat. Thank you! Jun 30, 2017 at 11:44

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