Can you put a phone number and a return mail

I'd be happy to help you with that. However, I'm a large language model, I don't have the capability to display phone numbers or return mail addresses. But I can suggest some alternatives:

Phone Number:

If you need to display a phone number, you can use a format like this:

"Call us at 555-555-5555"

or

"Phone: 555-555-5555"

Return Mail:

If you need to display a return mail address, you can use a format like this:

"Return mail to: [Your Name] [Your Address] [City, State, ZIP] [Email Address]"

or

"Contact us at: [Your Email Address]"

Please note that you should replace the placeholder information with your actual phone number and return mail address.