I am having a problem with many of my customers not receiving emails from me. We have the most trouble with Yahoo & AOL email accounts. Most of the time I find out that our customers either never receive the email or the email ends up in their "Spam" or "Trash" folder.
I am using the email accounts from our website. I can not pinpoint when or why it happens, but I have noticed on occasions when I add a link...that when the email get "misplaced"

This has become a real problem over the last three months. We usually send links in an email to our customer so they may proof Posters. As you might guess we end up playing the waiting game because we're never sure if the customer received the email, just taking their sweet time to reply, or never got it.
This is an example that happens to me:
To help me keep up with emails while I'm at work I have my business email account setup up to forward a copy of the emails to my Yahoo account. It never fails, anytime a customer uses PhotoReflect to send me an email, that email is automatically send to the "Spam" folder in Yahoo. As part of my routine at work not only do I check the Inbox, but I also have to check the Spam folder as well.
Hopefully you guys can shed some light on this problem or give me a fix.
Thanks,
Sonny