Email notification extensive "header" info

[ezdays]

Don't know what's going on, but all my subscription notifications start out with: "Hello ezdays". I get the same "to, reply to, from and date" in the header area that I get with all my email, but no more. I checked on this end and can see no place to change any notification settings, so I'm guessing that it has to be on the other end although I cannot find any settings to change there either. I'm using Thunderbird as my mail client.