im using Mailgun to send mail notifications and i have an issue. My inline css works fine except display:flex and justify-contents, color, padding and etc works good, but i want to use display flex and justify content with align items which not recognized by gmail, why is this like this? :d
>Solution :
HTML styling in e-mail is notoriously difficult to do. Here’s a reference guide to see what is supported:
https://www.campaignmonitor.com/css/
And specifically for your flexbox:
https://www.campaignmonitor.com/css/flexbox/
As you can see, all e-mail clients support different things. Why? Either for security reasons, lack of interest, or more nefarious reason.
The best advice I can give is: Keep it simple.