Don't need a bot to tell me something's fishy there.
First off the bat is the name Smith Jay. I suppose that could be a real name, but Jay Smith is more likely. Some cultures use the surname first but I think most cultures where there are people with the surname of Smith are going to be surname last cultures. It could be that Smith is the first name and Jay is the surname, but that seems less likely. So, the name is a red flag for me. Like it could possibly be a scammer from a surname first culture and they picked the name Jay Smith at random and put it as Smith Jay on the image because that's what they're used to doing.
I mean, sure, maybe he thinks Smith Jay sounds cooler than Jay Smith but feels iffy to me.
Also, if you're a professional anything, you probably wouldn't be using a selfie on your business card/signature. You'd have a professional looking photo. My suspicion would be that the photo was grabbed off the Internet because it looked personal and believable.
And, yeah, gmail addresses are almost always red flags. If you're actually making decent money at what you do, spring for a website and an eMail address on that domain. Otherwise, red flag here, red flag there, everywhere a red flag!
And, yep, the grammar and style is all sort of sketchy to me.
Of course, it could be legit but those are the red flags I spot.
The caveat is that I don't have a lot of first-hand experience here. My sales and visibility are such that both scammers and also legitimate whoevers don't even bother with me.