In ascending level of informality, you could ask your colleague to give it a look, give it the once-over, eyeball it.
So far as I'm aware, there's nothing particularly informal about look it over, but you might prefer to be more explicit about exactly why you want him to look at it: ...so you can check it before release.
Purely my own opinion, but I think check it out is much more informal (whereas check it over doesn't seem unreasonable in a formal context, but they have slightly different nuances anyway).
Emails are not like phone calls; they are more like letters.
With email, the recipient can see your email address or, in some cases, your name before reading the email. (For a letter, you would add a return address on the envelope.)
Just like with letter writing, it is typical to sign your name at the very bottom of an email. If you enable the option to automatically add a signature (which most email apps have), it will be added at the bottom.
The exact way you sign will depend on context.
If you're writing an informal email, you might write only your first name, first initial, or not include a signature at all. Chances are, your friends recognize your email. With informal email, you have a lot of freedom all around, but most people will expect a signature to be at the end (if you include one).
I also don't bother writing my name (or anything much) if I'm sending emails during a conversation with the person. Usually this comes up when working on separate computers, and a file needs to be transferred.
There are two different levels of formal email, at least in my mind.
If it's more casual, such as an email from me to my professor, I will sign it with just my name at the bottom (and I also exclude the "Dear" at the beginning). I may or may not sign my last name, depending on how well they know me (since my name is unique).
In a really formal email, such as one to a company with a job application, I sign with some variant of:
Sincerely,
Name LastName
You can read more about formal email writing here.
Best Answer
You said,
I suspect that you meant "informed" rather than "acknowledged".
The expression you use, "Here is the link for tomorrow's session." seems fine as it is, but you could relate your email to your previous discussion of the meeting: