✍ Mail template editor - Nextcloud 11 and older
Mail template editor
The template editor is only compatible with Nextcloud 11 or older.
We removed the template editor in Nextcloud 12 because we changed how emails are generated. While the customization capabilities offered by the template editor were easy to use, they often resulted in broken emails. To fix this, we designed a much easier mechanism that automatically generates emails which follow the theme settings and look the same in all the different email clients out there.
You can now overwrite templates by writing a class that implements the template interface (or extends it to not need to copy over everything). Easiest way is then put this class into an app and load it (so you do not need to patch it in on every update).
This is the interface of the class that needs to be implemented: https://github.com/nextcloud/server/blob/master/lib/public/Mail/IEMailTemplate.php
That is the implementation that could be extended and used to see how it works: https://github.com/nextcloud/server/blob/master/lib/private/Mail/EMailTemplate.php
An example from nextcloud/templateeditor#23:
OC\Mail\EMailTemplate::class
extensionExample
Let's assume that we need to override the email header.
<?php
namespace \OCA\MyApp;
use OC\Mail\EMailTemplate;
class MyClass extends EMailTemplate
{
protected $header = <<<EOF
<table align="center" class="wrapper">
// your theme email header modification
</table>
EOF;
}
config/config.php
change mail_template_class
to your class namespace'mail_template_class' => 'OCA\\MyApp\\MyClass',
If you need any help, contact the Nextcloud support team or read a step by step guide in the support portal.