Is [email protected] legit

Hello, I was searching online and came across this. I received a phone call offering home telus internet. I told them I'm already with telus. They said unfortunately I am not qualified for the promotion. They were about to hang up the phone when I asked them if they promotion can be offered to my parents who were with Shaw. They said absolutely. They asked for my mother's driver's license #, DOB and address. I was worried about being scammed and I made this known to the caller. I asked him to send me an email. He sent me and email from [email protected]. I forwarded the email and the message source codes to [email protected]. That department replied about 30 mins later and stated that it is legitimate. I called the caller back and gave them my mother's information. Half a day later, I received an email from [email protected] to register with telus. Everything is checking out so far.