New email address not entirely updated

I've changed my email address through the account settings from benwilke@strongearthfarm.com to ben@strongearthfarm.com. I received the confirmation email of the change and returned the confirmation promptly. The account settings in Zoho show that the changes have been made. However, messages are still being sent and received through benwilke@strongearthfarm.com. Does it take longer than an hour for this change to be entirely processed? I'm trying to send out my first newsletter today with the correct farm email in the signature, so I am waiting to ensure that I can indeed receive and send emails through ben@strongearthfarm.com.

Thanks,

Ben