I can appreciate the Cencourse position as they were using the name in good faith prior to google announcing gmail.
Complete BS, and one of the primary reasons why anyone who puts faith in what people here say about things in the USPTO database is in for a rude awakening.
First off, the data item you are talking about is an "intent-to-use" registration application - that's what the "1B" indicates under filing basis. Filing on an ITU basis is essentially a statement of, "We are not presently using this as a mark, but we plan to do so in the future." So where you get this "they were using the name in good faith prior to google announcing gmail" stuff is anyone's guess.
Secondly, go back through some newswire archives and take a look at when Google announced its Gmail service, and compare that date (taking into account that PM news releases are often dated to the next day) to the several ITU applications filed for "GMAIL". Kinda funny how all of those people just happened to be "inspired" as soon as the Google announcement was made.
Third, go to the Cencourse "Imagine your world" website, and try, just try, to nail down an answer to "what do they actually do?" Google cencourse, and just try to find evidence anywhere on the internet that anyone has ever paid them a dime for anything. You'll find plenty of links relative to their trademark application, but there is something that smells odd here.
The other misinformation in this thread requires more keystrokes than my fingers can spare at the moment. Suffice it to say, people will continue to believe that trademark registrations have some sort of magical power that I do not comprehend. If you are offering goods or services in commerce under a distinctive mark for those goods and services, and the relevant consuming public associates that mark with your goods and services, then you have a trademark, period, end of story.
Registration of your trademark provides certain procedural and legal advantages, but registration does not determine whether you do, or do not, have rights in a trademark.