Yes, in Spain you can also say "mucho gusto" but it is formal. Un "placer conocerle" is even more formal and a bit old fashioned. Encantado/a is the most common way, to greet someone and can be formal or informal. (Well, young people would just say "Hola" lol).

I think encantada is used more when you first meet someone and un placer conocerte is used when the first meeting ends.

I'm not fluent in Spanish but I have used both and had no funny looks from people when saying it.

I hope that helps you from a foreigner's perspective.

Victor, you are wrong about "leísmo". You are making a mistake called "loísmo" because would be "conocerle/la" the correct word. This mistake is especially common in Madrid (España).

Hola!

Puedes usar:

Encantada!

Un placer conocerte!

Me encantó conocerte!

Me gustó conocerte!

Cualquiera esta bien, todas son perfectamente válidas. Quizás son un poco formales

Si buscas algo más informal o casual puedes decir

Disfrute hablando contigo!

Pase un buen rato contigo!