A lot of companies (like us) already have a VOIP calling system and it doesn't make sense to buy more calling minutes from Sidekick or HubSpot. Give us what we want by offering calling integration with Ring Central and others!
I'm pleased to announce our Calling SDK is now open for beta! If you or a partner developer are interested, please fill out the form on https://developers.hubspot.com/calling-extensions-sdk and our team will be in touch to discuss your use case and implementation strategy.
Re: Offer integrations with other calling vendors - changed to: In Planning