Someone has an almost identical Gmail address as mine, but without the dot between first name and surname. However, Google doesn't care about the dot and I get most of their emails. I just cancelled a golfing holiday to Scotland for them. I can't stand golf.
@fesshole does it really happen?
@Stomata @fesshole yes. Even if you can use only the format you used during registration to login, Gmail doesn't care about the dots in the address and forwards all the emails to you. I think it was designed to avoid confusion and preventing two different people holding the same name.surname and namesurname address. The issue is that if you have a common name, likely you'll have someone with the same name who thinks that your address belongs to them even if they never registered.