In bulk email marketing putting more text than color background is common, what do you suggest makes a good bulk marketing email template?

Your e-mails should have 50%/50% Text/HTML ratio, this means you should not use too much HTML code. 

However, e-mail design is essential to boost your click/open rate, it has to be attractive, responsive to different screen sizes and has enough hero images and CTA buttons. 

I highly recommend you to sign up or read more about e-mail design here: https://litmus.com/This great website helps you to test your e-mails across different devices, see what are the latest trends in e-mail design, and great insights about how effective e-mail marketing is. I would be happy to help if you needed any more information. Kind regards, Laith - Client support manager at Emarsys e-mail marketing

The answer depends on whether you are in designing the template to be used by other users (this case, you are selling email marketing software to be used by others) or you want to design the template to be used by by you for your future campaigns.Generally, you need:1- To allow plenty blocks for texts (headers for title and subtitles + paragraph). This way you are allowing more texts to be added which ultimately will reduce the spam score.2- Smart logo placeholder (users can have different logo dimension proportions) 3- Use grids. As this will ensure great look on different screen sizes, especially important for mobile devices.4- Smart layout to fit well in all email service providers.5- If not offered natively by the email software, you will need to include footer that include important details such as physical address,unsubscribe link and statement explaining to the recipient why he is receiving this message from you.

I hope I could share a value through this answer.P.S. Thanks for the nice question.

making an special signature