SemySMS

What is SemySMS

SemySMS is an SMS gateway that uses an Android phone with the app installed as a physical sender.

• No monthly fees — you only pay for credit / SIM card.
• Works with any Czech or foreign operator.
• Simple REST API, ideal for edge functions.

Connector activation

1. Android phone with a SIM card and the SemySMS app.
2. Account on semysms.net and a generated API token.
3. Device ID from the Devices section.

In the project, open Connectors → SemySMS, enter the token and device ID. Master will save the data as SEMYSMS_TOKEN and SEMYSMS_DEVICE_ID and generate the send-sms edge function.

Send SMS

const { data, error } = await supabase.functions.invoke("send-sms", {
  body: {
    phone: "+420777123456",
    message: "Your verification code is 4823.",
  },
});

if (error) throw error;
console.log("SMS sent, ID:", data.id);

Bulk sending

await supabase.functions.invoke("send-sms", {
  body: {
    phones: ["+420777111222", "+420777333444"],
    message: "Planned maintenance tomorrow from 9:00 AM. Master Team.",
  },
});

Use cases

• OTP a 2FA — verification codes during login or payment.
• Notifikace — new orders, alerts, meetings.
• Reminders — reservations, invoice due dates, visits.
• Marketing — campaigns to your own DB (with GDPR consent).

Limits and recommendations