Yep, there is no way you know a persons email address from the email they just sent you.
And yes, with all the links emails will most likely get lost to spam filters.
The Newsletter they send out does, even on our own system and our users Outlook spam filter.
Think a signature is fine for INITIAL emails to CUSTOMERS. If anything so you can quickly go to the first of a conversation a get their phone number or web address.
but should be text only and
Name
Title
www.companyname.com
Street
City, State Zip
Direct Phone
Honestly think the address is optional, but most business people expect it.
And kill it on replies. If they sent you an email, they already know who you are.