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Inbound messages are also delivered via webhooks. You must register the webhook in your Arnio Dashboard
CautionA user must be registered as a contact on your account before their messages will be routed to you. This can be done by sending them a message or adding them as a contact.Need receive-first texting? Talk to us about our dedicated plans.
Learn more here: https://docs.arnio.co/api-reference/endpoint/get-messages Screenshot2025 09 07at4 27 21PM Pn

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Error Codes

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Message Length

Messages must be fewer than 18,996 characters. Longer content should be split into multiple messages.

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Useful Information

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From Number

Each customer will always interact with your brand through the same dedicated Arnio number to maintain consistency and trust.

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Handles

Every message has a unique message_handle, allowing you to query or resolve its status later especially useful in high-volume or queued scenarios.