What push mail solution do I need?

Only MobileMe accounts can push to the iPhone.

 

Try here

http://lifehacker.com/398526/set-up-push-email-contacts-and-calendar-on-your-iphone-for-free

 

It is true that only MobileMe accounts support pushing, you can see this in the vocabulary used in the iPhone Settings program. IMAP and POP mail accounts work fine, but work using "fetch", and you can set the fetch rate in your iPhone's Settings program.

It's important to understand the difference here: fetch means your iPhone goes out to the network to check for new messages, which wastes battery as it does this automatically at certain intervals. Push, on the other hand, means your iPhone never goes out to the network, and instead waits for the server to contact the phone when something arrives. Push is better for battery life as your phone's battery-expensive network abilities are only used _exactly_ when there is new data for you and only then.

 

Yahoo! Mail also offers free push email.

 

i have yahoo push and its pretty good.

 

It allows you to send emails from your regular email account's SMTP. If you get your Gmail, say, forwarded to Mail2Web, all your replies would be from mail2web and not gmail.

 

Negative Ghost Rider, Yahoo pushes as well

 

This is not necessarily true. Mail2Web offers a cheap option (somewhere around $5-$6/month I believe) where you can use whatever email address you want as your "reply" email address. For example, if you use their paid service (it's called personal exchange or something like that) and forward your gmail to your mail2web email address, mail2web will push your gmail to your iphone and when you reply to those emails it will come from your gmail address.

If you want to use mail2web's free push email option, you are correct that replies from your iphone will come from your mail2web email address.