which email clients are good for invites?

gmail is the best

as far as I know, many trackers would have a problem sending invite to Hotmail, and some to Yahoo, I really wonder why there would be such problem ?

My vote is: Gmail.

g-mail is the best.

In some trackers where don´t accept public mails I´ve registered with an account I created at scandinavica.com.

But in my opinion GMail is the very best.

gmail, or maybe one of your own url.

just use gmail.

i prefer gmail

GMail, the moment that someone invites you it takes like 4 seconds to the mail arive, and there are no problems with changing passwords.

i use gmail
and usually clients mean software, so then i use thunderbird
but the best email SERVICE, is gmail