Email footer - add to address book

Anonymous
Not applicable

Email footer - add to address book

Good morning!

I have been paying close attention to, and collecting samples of email footers that encourage the recipient to add to address book or whitelist to ensure they receive emails.

Does anyone have best practices on this?

A few examples I've seen:
- the simple copy and paste into address book (but not sure if you can just do this with domain?)
- a link to another page that gives instructions on how to add to address books on different clients
- a link that takes you to a page with different clients and you click on one and it'll do it for you

Thanks!