Send SMS, WhatsApp and Viber and check delivery right in the chat

The agent calls the SMS Aero gateway at https://gate.smsaero.ru/v2 and works with what that API can do: sending to a number or to a whole list at once, the history of what went out, the status of every message, groups and contact cards, the blocklist, checks on whether a number is live and which operator it belongs to, the balance and the tariff, plus the separate WhatsApp, Viber and Telegram-code channels. A bulk campaign goes out as one request carrying the list rather than a loop of single sends, so there is no such thing as a half-sent campaign.

The price is counted in parts: a long text is split into several messages, each charged separately, Cyrillic shortens a part more than Latin does, and mixing Cyrillic and Latin inside a single word is refused outright. The API does not return the number of parts, so the agent works it out from the length of the text itself and takes the price from a test send — which returns the cost without charging you and without reaching the subscriber.

Sending spends money and reaches other people's phones, so the agent never launches it on its own. First it shows the text, the sender sign, the size of the list and the price, and only after you confirm does it go ahead. Then it collects the result for each number separately and puts the numbers the message never reached into a list of their own — with the reason for the refusal, not a generic error phrase. It treats the irreversible the same way: wiping every group or contact and topping the balance up from a card happen only on an explicit confirmation.

A status does not arrive at once or in a single step: without a contract every message goes through manual moderation for up to ten minutes, and «in moderation» is a normal state rather than a fault. «Handed to the operator» is not the same as «delivered» either, so the agent re-reads the status later instead of passing one off as the other. A sender sign may be approved by some operators and not others — the agent reads the per-operator breakdown and warns when the campaign will bounce for part of your audience.

The gateway issues no separate token: every request is signed with the pair of values from the cabinet, so reissuing the key cuts access off instantly — and the agent says straight away that the connection has to be refreshed instead of retrying in silence. When the cabinet has an IP allowlist switched on, the service answers with a refusal that reads a lot like «no data» — the agent names the real reason instead of retrying pointlessly. It reads lists to the end page by page and states any shortage of data or permissions directly.