HTML Content Block allowed tags and attributes

HTML experts only: Using your own code may affect how the marketing piece is rendered in email clients, preventing it from adjusting to the screen size (i.e. the "responsiveness" of the message). Make sure to use HTML that is email compliant and responsive. While this option is available in the Zephyr Builder/Editor, we are not able to assist in the creation or troubleshooting of custom HTML code.

Allowed Tags:

a, abbr, acronym, address, area, b, bdo, big, blockquote, button, caption, center, cite, code, colgroup, dd, del, dfn, dir, div, dl, dt, em, fieldset, font, form, h1, h2, h3, h4, h5, h6, i, ins, kbd, label, legend, li, map, menu, ol, optgroup, option, p, pre, q, s, samp, select, small, span, strike, strong, sub, sup, table, tbody, td, textarea, tfoot, th, thead, u, tr, tt, u, ul, var

Allowed Attributes:

general attributes: style, id, class, data-*, title
a: href, name, target
img: align, alt, border height, hspace, src, vspace, width, usemap
table: align, bgcolor, border, cellpadding, cellspacing, width
tbody: align, valign
td: align, bgcolor, colspan, height, rowspan, valign, width
tr: align, bgcolor, valign
tfoot: align, valign
th: align, bicolor, colspan, height, rowspan, valign, width
thead: align, valign
li: type
map: name
area: alt, coords, href, shape, target