I use hotmail as an anonymous email to avoid getting spammed on my work/personal email.

Now, though they want me to provide mobile number for this "security" thing - and to my horror they had my mobile in the drop-down list.

I don't trust these organisations, and I am a bit worried about how they got my mobile number. No wonder I get spam texts and calls now.

I am going to migrate to mail.com.

If I set up a forwarding rule in hotmail to help me migrate to mail.com, will it eventually expire - do I need to keep coming back to hotmail to keep it alive?