Resident communications with cost controls, not an open firehose

A resident asking about their rent is a conversation; a 72-hour entry notice to a building is a broadcast. Mixing them in one inbox loses both. Ayillo keeps 1:1 conversations on the resident's record and broadcasts as a separate, audited notice with a frozen recipient snapshot. Every broadcast targets a hierarchy — portfolio, property, building, floor, unit, or person — with include and exclude lists, so the right people are reached and nobody pays to text the wrong building.

• Pre-send reach estimate: reachable vs unreachable per channel, with a recipient ceiling that asks for confirmation above your threshold.
• Per-organization monthly send budget with a soft warning and a hard cap.
• SMS used as escalation only by default — in-app and email first.
• Duplicate suppression so the same resident isn't paid for twice in an hour.
• Acknowledgement tracking with a non-responder list and resend to unread.

Large portfolios can never fire an unbounded SMS blast by accident.