I'm creating a newsletter and there are some colors which I would like to have some transparency. So, is it possible to use RGBA as a background-color?
Is it comptaible with all email readers?
Example:
<table cellspacing="0" cellpadding="0">
<tr>
<td>
<hr height="1px" width="320px" style="border:none;background-color: rgba(235, 173, 21, 0.3);"></hr>
</td>
</tr>
</table>
Can't use RGBA consistently in emails. One of the many quirks of email design is the way it recognizes color declarations both in CSS and in the old-style HTML tags.
These work:
Don’t use these:
All shorthand, color names, 3-digit HEX codes and RGBA values do not work consistently across all email clients.
You’ll notice I made use of the bgcolor tag. You should use this old-style method to set the background on all your and elements - just like other old-style declarations such as width and border.
A quick note about Gmail (not sure if this has been addressed since):
Gmail has a quirk where it ignores #000000 (black) and #FFFFFF (white) in hyperlinks. Use #000001 and #FFFFF9 instead as a work around.