Glassix runs AI agents and human agents in one inbox across messaging and voice, keeping each customer exchange as one conversation. Its docs cover connecting an Apple Messages for Business account by pasting the Apple Business Account ID, plus WhatsApp, Instagram, TikTok, phone numbers and SIP.
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Apple Messages for Business is Apple's business chat channel in the Messages app, not iMessage from a phone number: customers chat with a verified brand and usually start the conversation. Linq sends iMessage, RCS and SMS from real phone numbers through an API, for a flat fee from $260 a month. Glassix is an agent inbox with an API, not a phone-number iMessage service.
Support teams that want AI agents, messaging apps and voice in one inbox.