You can, but remember that your reputation is tied to your domain name as well as the IP address.
If you are in danger of being classified as a ‘bad’ sender of email, you will be affecting your domain reputation, which is very hard to recover from.
It may be safer to use a completely separate domain (not a subdomain of your primary corporate domain) for sending marketing or even transactional email if you are worried about issues with domain reputation.
Sinch Mailgun has answers! If you have any concerns or questions, please send us a Support ticket using the Support page within your Mailgun Control Panel. Our Support Team will be happy to assist!