WP Admin -> s2Member -> PayPal Options -> Confirmation Email
If a user upgrades an existing account, although there is an email sent too, there isn't an interface to edit it yet. Here's a hack that you can use for that, though: viewtopic.php?f=4&t=10368&p=33365&hilit=+modification+email#p33365
I hope it helps. 
Statistics: Posted by Cristián Lávaque — December 9th, 2011, 1:41 am
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