standards - Why do not all CSS rules work in HTML emails? -


why can't html emails support normal positioning , html tags.

is there specific reason simple css rules float , background-image not work ? can't imagine these present security issues don't have in normal emails?

i answers based on reliable sources/ references , explain fundamentals of behaviour within email clients.

why html emails not following normal web standards when comes html , css.

some general info on html emails:

here's nice article gives tips concerning html emails: the do's , don'ts of html email

my own interpretation of css problem following:

html markup language, means email program needs html parser read it.

also, know, not browsers use same rendering engine or rendering rules. browsers, same html parsers: each parser differ little bit.

and reason why float doesn't work, because implemented html parsers email clients use, not 'good' in interpretating layouts based on float.

i quote:

because clients gmail , outlook 2007 have poor support float, margin , padding, you’ll need use tables framework of email.

hence recommended not use floats doesn't mean won't work. depends on email client , how supports css.

i highly recommend check out list shows css support major email clients:

the ultimate guide css in html email

and can download complete guide here: complete css guide 18 email clients

to conclude:

just websites, different email clients have different css interpretations , rules. email clients ignore specific css rules. best solution on safe side , use css (or most) email clients support.


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