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SMS Messaging

An Erdo agent can send outbound SMS on your behalf through Erdo’s managed number — the same Erdo-managed model as Voice Calls. No account or carrier setup to connect; just ask the agent to text someone.

“Text +1 415 555 0142 to confirm their demo on Thursday at 2pm.”

Like voice calls, every send is approval-gated (you confirm it in chat first) and requires a consent basis — a concrete reason the message is permitted (explicit opt-in, an existing business relationship, an internal test).

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Opt-out is enforced

Recipients who reply STOP are added to your organization’s suppression list, and any further send to that number is blocked before it leaves — the agent is told the recipient opted out and no credit is charged. (STOP is also enforced at the carrier level, so opt-out is honored even on the very first reply.) Suppression is per-organization.

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Sending is rate-limited

Erdo caps how many messages can go out so a loop or a mistake can’t spam anyone: there’s a per-recipient limit (you can’t blast one number) and a per-organization limit over a rolling window. A send that would exceed either is blocked before it leaves and not charged — the agent is told to back off. A logical send can also carry an idempotency key so a retry never sends the same message twice. These limits, opt-out, and consent apply across every channel.

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What the agent does

The send_sms capability:

• Validates the number, body, and consent basis.
• Checks the opt-out list and your credit balance first.
• Sends from Erdo’s number and records the message.
• Charges a small flat credit cost per message, only after the message is accepted (a blocked or opted-out send is never charged).

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Lead outreach

SMS pairs with Voice for lead outreach loops: text a list, capture replies, and let Erdo qualify and follow up. Combined with datasets and workstreams, a whole list can be worked end-to-end.