Issue with confirmation email from Data Annotation

[Zero3K]

Confirm your dataannotation.tech account.eml.txt

[the-djmaze]

Correct. The mail uses

    <a style="-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; text-decoration: none; color: #265cc4;">
        <button class="btn-confirm" style='-ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; gap: 8px; min-width: 143px; height: 44px; background-color: #265cc4; box-shadow: 0px 1px 2px rgba(16,24,40,0.05); border-radius: 8px; font-family: "Inter", sans-serif; font-style: normal; font-weight: 500; font-size: 1em; line-height: 24px; color: #fff; cursor: pointer; padding: 10px 18px; border: 1px solid #265cc4;'>
            Confirm account
        </button>
    </a>

The problem here is that BUTTON is an HTMLElement that should be inside FORM.
E-mails don't process forms so i disallowed all form input HTML elements.

snappymail/dev/Common/Html.js

Lines 17 to 23 in 2c014ca

	disallowedTags = [
	'svg','script','title','link','base','meta',
	'input','output','select','button','textarea',
	'bgsound','keygen','source','object','embed','applet','iframe','frame','frameset','video','audio','area','map'
	// not supported by <template> element
	// ,'html','head','body'
	].join(','),

This could be improved by keeping the innerHTML