Meh. They're just channels/mediums. It depends on what you're trying to accomplish. SEO is still valid. PPC is a hundred billion $ industry, that provides instant access to a target audience. They said email would kill the USPS, they're more vital than ever. Kindle will kill book publishing, internet music will kill radio, and the list goes on. That being said, I agree with the sentiment. Physical mail is an undervalued asset. With the layering of technology integrations, it's possible to create personalized pieces (birthday, neighborhood, interests) that wasn't feasible just a few years ago. I still remember an interview with Zig Ziglar where he talked about the importance of relationships. He sent every one of his past customers a birthday card each year. We greatly underestimate the impact of simple outreach done well.

Wow, that's really slick!

@Darin Gaba QR is easy peasy. https://www.canva.com/qr-code-generator/ For SMS, if you're looking for a short code it's not cheap. $500-1,000 a month. https://www.drip.com/blog/sms-short-codes If you want to automate follow up, that's a whole can of worms to register an A2P 10DLC number. You basically have to prove you're a legit business and authenticate that the messages are coming from you, due to rampant abuse from spammers.

I like it. One principle I've embraced recently: every trend creates in it's wake a counter-trend. There is power in physical mail, when done purposefully. The mailbox is one of the most undervalued tools that we have at our disposal.