Novu is open-source notification infrastructure (novuhq/novu, open core: MIT plus a commercial enterprise folder). Novu Notify sends product notifications, including SMS through providers such as Twilio. Novu Connect gives an existing AI agent two-way conversations on Slack, Microsoft Teams, WhatsApp Business, Telegram, email, web chat and iMessage. Novu supplies no phone lines: iMessage runs through your own Sendblue account, and the source code also has a Photon iMessage provider. SMS is a notification channel, not a Connect conversation channel.
Free with 10,000 workflow runs a month, Pro $30 a month, Team $250 a month, Enterprise custom with a HIPAA BAA, SSO and self-hosting.
Novu is a routing layer: it needs a Sendblue account for iMessage and a provider such as Twilio for SMS, while Linq supplies its own iMessage, RCS and SMS lines. Novu has no RCS. It covers Slack, Teams, Telegram and email, which Linq does not. Both report SOC 2 Type II and publish an MCP server.
Teams with an existing AI agent that want it on chat apps, email and WhatsApp, with iMessage through a provider they bring.