Sending an e-mail with multiple attachments? This is probably a silly question, but I really need some advice.
I'm an undergraduate student and I want to take a different major in grad school. Luckily, my university offers you a possibility to take a different major in grad school provided that you pass certain exams and show that you'll be able to follow the program. Now, I've sent an e-mail to a professor that's in charge of all that at the department that I want to get into, and he said that for a start I should send him the list of all the courses I've taken with corresponding grades.

Now I don't know if I should write it manually (so it's going to be a really really long e-mail) or if I should take screenshots from this "program" we use at university that contains all the information about my academic success? For this second option, I'm worried it might seem impolite to just send multiple attachments and I know some people don't even open attachments because they're afraid of malware... 

Thanks in advance for your help.
If you really are stuck in this dilemma and there is no technical solution, then you can do both. Provide your own typed summary and attach the evidence as attachments. But give a warning that the attachments are just the proof and add no additional content. 

Then the person can look at the attachments or not.

But commenters have suggested other, technical, solutions that might be better.