Information in a U.S. trademark application is public record. As such, it has become commonplace to receive a batch of unofficial trademark solicitations within weeks after filing. One such solicitation received recently is shown below. These types of documents may be immediately be sent to your attorney for deposit in his/her waste bin. I routinely tell my clients that all official correspondence should come through me or, on rare occasion, the United States Patent and Trademark Office. All other inquiries/communications/solicitations are likely spam.
The USPTO is aware of the growing number of unofficial solicitations, and recently released a Warning from the USPTO Concerning Unofficial Trademark Solicitations.