I will answer your questions in order:
I think so. Is there any way to tell for sure?
For the transaction, when you click on Accept, that will release your original deposit amount for payment. At that time, there should be a button for "add bonus", just click on that and you can add it there. Now that you mention it, I've never been on your side of the transaction before, so I hope that's correct!
All of what we are doing should greatly decrease the likelihood that something you send will end up in a junk folder. The one for someone to insure that it doesn't, they can add them to their "safe senders list". In some cases, depending on the email system they are using, making them a contact may do this. As a sender you don't have direct control, but the receiver does. Also, if they see it in their junk folder the first time (and you should do this too), if you have the option to click on "not spam" or "mark as not junk", definitely do that. Each time someone does that to one of your emails, it increases your sender reputation.
There is always more you can do, but these are the basics. It so happens that I used to manage the data centers of an email service provider - we sent out about 50million emails each day, so there were many other things we had to do to keep our email flowing properly. You can get on the "white lists" of providers like AOL and Gmail which is like them putting you on everyone's approved senders list. I could do that for you with the various providers, but it's a lot of work, complex to maintain, and I really don't think you need it. I'm pretty confident that you haven't been sending out spam everywhere, so it may take a short time for your emails to avoid the spam folders.
I'm sorry if I'm unleashing some things that are too technical. This area can be extraordinarily complicated and difficult to navigate, but there is no reason you should have to go that far. I mean, when you're sending out 50 million emails each day, and 1% of them are mistakenly sent out to unsubscribed people, you have to have ways to deal with that and avoid the spam bucket.
So. Ignore all that. These two things, along with clicking "not spam" on your received emails will help a lot. And if the group of people being sent to is small enough that they can be informed just to add the sender as a "safe sender" or contact, then that completely solves it for those individuals.
My Mother Died on October 30th, 2007. She was 72 and died of cancer. She had a small lump removed a year earlier and went through some treatment. The severity always seemed small. At about 10PM on October 29th she wasn't feeling well and asked my Father to call 911. She was put on life support that night. I arrived there at about 6AM - my brother had called me just as I had my hand on the doorknob to leave for work. I answered the phone and said "what's wrong with Mom", he told me, and I said "how bad". He said "it's bad. We have to make a decision soon about life support". The shock left me literally unable to speak. I sat on the edge of my bed and kept thinking - "OK, I'll go now, but I have to get my coffee first". I know now that I sat there for an hour - my brother had called me at 5. It wasn't until he called again just before 6 to find out how much longer before I get there, that I left for the five minute drive. He called me again when I was in the hospital lobby. There was no receptionist in yet, so he had to tell me how to get to ICU. I went up. She was unconscious. I kept running my fingers through her hair and telling her how nicely it came back after her treatment... she had been so happy about getting her hair back because it was a little curly now. We went in the other room and quickly decided that the right thing to do was to remove the life support. I had worked in a hospital for several years, and my brother and father didn't think they could handle being in the room when she died, so I said I would because I didn't want her to be alone. It was nothing like I had imagined.... I thought it would be like her just falling asleep. It was really painful.
That's probably more of an answer than you thought you would get. I'll stop now. I'm pretty sure I've never told one person that much of the story. Wow... it seems like yesterday.
I'm sorry to hear about your Mom. She must have been a hoot. People at that age are either entirely miserable, or more often, extremely cheerful and usually pretty fun to be around.