how long does it usually take for mail from the US to reach you?
the IRS does not have an e-mail address that you can use
see this for a phone number to call
https://www.irs.gov/faqs/irs-procedures/refund-inquiries/refund-inquiries-0
you can also try
800-829-1040
First choose your language.
Then 2
Then 1
Then 3
Then 2
When asked for SSN do nothing it will ask twice
Then 2
Then 4
https://www.irs.gov/faqs/irs-procedures/refund-inquiries/refund-inquiries-0
If you lost your refund check, you should initiate a refund trace:
Your claim for a missing refund is processed one of two ways: