my email address is being seen as junk/spam by hotmail/live

I have a .co.uk business email account and recently emails I send to my clients are being sent straight into their spam/junk folders and not getting to them. All these clients have hotmail or live accounts. You must have changed your filters. But I am a bona fide business as a funeral celebrant. I only send drafts of funeral services to individual people to seek their approval before I deliver the service for their loved one. It really is causing a problem for me as it is a stressful enough time for people without me having to tell them to check their spam for my email - half of whom are not confident with email in the first place. It doesn’t exactly make me feel good that all my hard work and care is being viewed as junk by hotmail.