# How to update Theme Mail CSS?

**URL:** <https://forum.mautic.org/t/how-to-update-theme-mail-css/16599>\
**Category:** Product Support\
**Created:** [October 16, 2020, 2:09pm UTC](https://forum.mautic.org/t/how-to-update-theme-mail-css/16599 "2020-10-16T14:09:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![maurice](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/maurice/32/406_2.png) [@maurice](https://forum.mautic.org/u/maurice)\
**Post date:** [October 16, 2020, 2:09pm UTC](https://forum.mautic.org/t/how-to-update-theme-mail-css/16599/1 "2020-10-16T14:09:07Z")

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Hi,

I need to update the CSS stylesheet for my email theme. So I went to the Mautic themes directory, opened the theme directory I use, openend the css folder and edited the css file there.

I then deleted the cache directory, emptied the Cloudflare cache, and hit Contrl + F5 for a forced rerefsh of the browser cache. The Mautic cache directory was recreated successfully.

But still the old css is loaded in the email.

What do I need to do more to get this working?

Thanks,  
Maurice

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**Author:** ![cremigerhonig](https://avatars.discourse-cdn.com/v4/letter/c/9de053/32.png) [@cremigerhonig](https://forum.mautic.org/u/cremigerhonig)\
**Post date:** [July 5, 2024, 10:15am UTC](https://forum.mautic.org/t/how-to-update-theme-mail-css/16599/2 "2024-07-05T10:15:14Z")

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my email CSS is making problems

is it related to this issue?

# [Not sending emails - adding various CSS to mails - sending email create 503 error](https://forum.mautic.org/t/not-sending-emails-adding-various-css-to-mails-sending-email-create-503-error/32651)

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**Author:** ![ricfreire](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ricfreire/32/14973_2.png) [@ricfreire](https://forum.mautic.org/u/ricfreire)\
**Post date:** [July 5, 2024, 11:52am UTC](https://forum.mautic.org/t/how-to-update-theme-mail-css/16599/3 "2024-07-05T11:52:43Z")

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Hi @maurice,

Try the following steps:

1. Go to your themes.
2. Export the desired theme.
3. Change the ZIP file to a unique name.
4. Re-upload the file.
5. Open the email builder and check if it reflects the new CSS.

I hope this helps.

Best regards,  
Ricardo