Hi,

Odoo doesn't have a native "Export as HTML file" button for email templates, but here are the practical workarounds:

1. Copy the HTML source directly: Open your email template in Email Marketing > Templates, switch the editor to code view (< > button), select all and copy. Paste into a .html file; that's your exportable HTML.

2. Via Technical menu (if developer mode is on): Go to Settings > Technical > Email > Templates, open the template, and copy the Body (HTML) field content directly.

3. Browser Save As: Preview the email in the browser, right-click > Save As > Webpage, Complete; this captures the rendered HTML with inline styles.

Option 1 is the cleanest for uploading to another platform like Mailchimp, Brevo, etc.