Note that I’m not saying “use text/plain and no text/html part” as some will; you’re welcome to use HTML (though I do say, please provide a good text/plain part), but see what life’s like if you roughly limit yourself to paragraphs, lists, inline formatting, images (where useful, not just gratuitous) and maybe headings and tables (strictly for data, not for layout; receipts often benefit from tables). And maybe a company or product logo to go with it, but not formatted fancily. Maybe go a teeny bit fancy for a big call-to-action button—or perhaps just try having it as a bold link in a paragraph of its own.

Quite a few entities that have tried this have reported higher conversion rates and customer satisfaction.

There is also a visual code plugin to preview mjml formatted emails plus they offer an api to convert mjml to html on the fly.

[0] https://mjml.io/

I wish companies would focus more on content, rather than form. Recently I got a garbage html email from paypal telling me my donation account will be blocked by a certain date, but the sentence ended abruptly without a date they were referencing. They spend huge amount of time on large amount of weird html markup, but screw up on an actual useful content.

Anyway, does anyone know if text only (rather than html) messages more likely to get past spam/newsletter filters?

As someone who just wants to write internal html email reports that don't look half bad in gmail, I wonder where I should be looking.

Btw, the page title for all of the categories has a misspelling - 'Tempaltes'