What is the best way to create HTML email templates?

Question

HTML

As far as I understand, not all css properties are supported in all mail agents / mail web interfaces.
Maybe somewhere there is a comparison of the most popular ones with an indication of which elements will definitely be supported and work (look) the same everywhere?
I think a lot of people have.
Thank you!
UPD:
Well written. I would also like advice on "table forms"
>> 5. It is advisable to use the width of the entire document at 600px.
Set a maximum width of 600px and protect yourself from the hateful horizontal scrolling comments in your subscribers' email clients.
And what is the best thing to do if I have a tabular form (8-10 columns) in my newsletter? 600px - looks bad (narrow margins). 1000px is not bad, but it's terrible on a small monitor - they swear.
What can be done?

Answer 1

Tips - thesiteslinger.com/blog/10-tips-for-designing-html...
Very efficient service - www.getresponse.com/features/email-creator.html
In general, I advise you to use the services, and copy the HTML code from there, Fortunately, the services have a trial period :)

Answer 2

Fresh article on Habré - Layout of email newsletters from A to Z for dummies

Answer 3

CSS support in mobile clients and programs - https://www.campaignmonitor.com/css/
Similar - templates.mailchimp.com/resources/email-client-css...
HTML Checker: Email Checklist - emailchecklist.org
Working with Template : premailer.dialect.ca
Test: https://putsmail.com/tests/new
Responsive and mobile-friendly templates:
https://github.com/seanpowell/Email-Boilerplate
https://internations.github.io/antwort /
responsiveemailpatterns.com
zurb.com/ink (I don't want to open for some reason)
Free templates:
https://www.emailonacid.com/blog/details/C13/600_f...