Fonts for email newsletter

hi

I want to use “Calibri” and "Trebuchet MS’ in my html email.

These fonts got installed while installing windows. So they are default fonts in my windows xp.

My question :

Will these fonts be available to everyone seeing the email without embedding them like we embed custom fonts.

Are these both fonts available in MAC also ?

Or i will have to assume them as custom font and embed them like custom font ?

vineet

Considering basic CSS support is iffy at best, adding fonts is impractical.

Here’s the list of default fonts included with OSX: http://en.wikipedia.org/wiki/List_of_typefaces_included_with_OS_X

Trebuchet MS is on the list, but not Calibri.

Common cross-platform fonts: http://www.ampsoft.net/webdesign-l/WindowsMacFonts.html

Font stacks:
http://unitinteractive.com/blog/2008/06/26/better-css-font-stacks/
http://cssfontstack.com/

Embedded fonts aren’t viable in email at this stage, as shown here: http://www.campaignmonitor.com/blog/post/3044/does-font-face-work-in-email/

Mac users that have Office installed will have the Calibri font available, but as a rule, you can’t assume they’ll have it.