Names in sender name not updated

Hello admin, i created info@ollyworldgroup.com initially with my personal name instead of the company name. Though i later correct this by re-editing. The peoblem is, anytime we send mail via info@ollyworldgroup.com, it shows in receivers mailbox as my personal mail (i.e mail from Okunlola Ola). I want the mail to show Company name in the receivers mailbox as Ollyworld. I have navigated around but i couldn't rectify this. kindly help me with what to do because i had like to correct this before upgrading the account to enterprise.

Thanks