Changing sender's email address in Magento

Right now when Magento sends new account confirmation, order details, etc. to customers, it goes out from abc开发者_Go百科company@bluehost.com. We'd like to send it from support@abccompany.com. How to achieve this?

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Go here

system->configuration->store email addresses 

here you can find email addresses of General contacts, Sales Representative etc.

Change the email addresses here and

system->configuration->Sales Emails 

Select the sender here it will change the sender email for all Sales Emails

and now go to system->configuration->customer configuration to change the new account email sender etc.

Thanks

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you can change this email Id from the system->configuration tab.