Whilst I’m not a large corporation and I have an employee count of exactly one – it seems that we need disclaimers to scratch our ears these days.
There is a mailing list is stored by a third party professional company (not on my phone, a Rolodex, Post-It notes, etc.) which has a data storage center complete with information storage security certificate (ISO 27001), as well as the certificate of IT service management (ISO 20000). So you can rest assured that your data is safe.
If you’re feeling in any way unsure then may I suggest you stop looking at my website, close the browser, turn off the PC and go and hide in the woods. One thing I would ask, don’t forget a sketchbook and pen, I’ll meet you there.