I received the same thing. And we just signed up for a Calm Lifetime back Friday deal. We use it is. All rooms. Calm on Sonos is our bedtime routine. I don’t want to airplay I want to control it like I do now. I guess I will have to get creative.  

Unfortunately, Sonos has no financial agreement with Calm, merely a distribution agreement. It’s up to Calm if they choose not to maintain the API and servers necessary to support Sonos. It’s certainly a distressing thing, as I’ve been a non-paying member of Calm for years. Which means I may be part of the issue, not paying for the source, albeit it fairly restricted as to what Calm offers.

I hope you’ve expressed your concerns to Calm. Sonos has no part in this decision, if I read the Sonos partners page properly, as well as the Sonos financials. 

This is completely unacceptable... I use this app integration everyday, on multiple speakers. I also just bought a lifetime subscription to Calm, and it was only because it integrated into my Sonos system! Why the hell would they end integration? We need to create an intense pressure campaign to barrage Calm and get them to keep the integration going. 

While I agree, I’ve never seen a rep from Calm here in the Sonos boards.

Sonos does seem to have lost a few music services recently. Wonder why? Does Sonos make it harder for services to keep up?

There have been some changes in requirements for the new app, but they don’t seem onerous to me. However, they do require actual work, and if a supplier doesn’t have the cycles (or the expertise - maybe they laid off the Sonos-SMAPI dude?) then pulling it is easier than updating it.

Certainly a possibility. And it feels as though there is a general ‘belt tightening’ in tech right now.

But the contrast, that I know nothing about, is the loss of associated customers. I can see some percentage of ‘I listen only on Sonos’ folks to stop paying for the source, since it’s no longer available. How that equates to ‘we need to keep a SMAPI specialist on hand’ is unclear to me. 

In a lot of ways, I consider Sonos to be like a TV. It ‘shows’ what is fed to it. It the streamer (the channel) wants to shut down, and not provide a channel to the TV, that’s really not the responsibility of the TV manufacturer. They’re still making the TV. As Sonos continues to make their speakers and system. 

This was posted on Google. 
 

Sonos did not actively "cancel" Calm, but rather the integration between the two platforms ended because Calm decided to discontinue the necessary API and server support needed to maintain the connection with Sonos, likely due to a lack of financial agreement or strategic alignment between the two companies; meaning users can no longer access Calm content directly through the Sonos app. 

I have expressed my disappointment directly to Calm. I would urge others to do the same.

The email is support@calmhelp.zendesk.com

This speculation is incorrect. Sonos has never had any financial agreements with any music services.  Incorporation into Sonos is open to any music services who wishes to participate, and it is free of charge.  There is a level of effort from the music partner to develop and maintain their SMAPI interface, which may be the issue here. 

Thank you, writing an email to them right now. 

I wrote an email to them a few days back, and was actually met with snark and resistance. And a tinge of good old-fashioned gaslighting. I don't think they give a flying s*** about us. 

I’d assume they ‘know’ how many users connect to them through Sonos, although I’d be surprised if they share that data with their CS folks.

I don’t know how much is involved with maintaining the connection with Sonos is, but I’d think it isn’t all that much. which makes the choice more inexplicable, and perhaps terrifying for their long term survival, but that is pure speculation on my part.