You will want to make sure that all USPTO emails reach you. Unfortunately, servers or SPAM filters often block important messages or send them to your junk folder because they don’t recognize the sender. Please note that the USPTO cannot deliver an email successfully if:
1) The destination email address is not valid. Please check that the entered e-mail address does not contain any typographical errors.
2) The destination email address is relaying the email to a different address.
3) The USPTO cannot perform a “reverse DNS look-up” of the destination email address.
4) The destination e-mail server is blocking any email address that ends with “uspto.gov” as spam. NOTE: Email originating from “uspto.gov” may include attachments, so email from the USPTO address with attachments should not be blocked.
To help ensure that you receive mail from the USPTO, please log in to your email now and follow the listed steps to add important USPTO email addresses to your address book, contacts, and/ or “Safe Senders” list.
Remember that you may receive email messages from several Trademark addresses. Please add all of the addresses listed below. You may also receive email from an individual person’s USPTO email address, e.g., johnsmith@uspto.gov.
TrademarkOfficialNotices@uspto.gov
eCom101@uspto.gov through eCom130@uspto.gov