SMS and phone-call alerts
Your own confirmed phone number, what alert texts look like, reply commands and fair-use quotas.
On every plan, Heimdall sends SMS and places voice calls from its own GSM gateways, within the plan’s monthly quota. No app is needed: alerts arrive like any other text message or call. SMS and call text is always in English.
Add your phone number
Only Turkish mobile numbers (+90) can receive SMS and calls, and only after the number has been confirmed on that phone. Each user adds their own number: nobody — not an admin, not Heimdall’s staff — can enter or confirm a number for somebody else.
- Open Profile → Notifications and add your number, for example
532 123 45 67after +90. - Heimdall sends that number one SMS with a confirmation link. The SMS names nobody; nothing else is sent to the number before it is confirmed, and this SMS never counts toward the quota.
- Open the link on that phone. The page shows which Heimdall login the number was added to. If that is you, read the KVKK privacy notice and accept; if it is not, decline, and nothing else is ever sent.
- The number is confirmed and receives SMS and calls in every organisation you work in.
There is no limit on how many members have a number: the volume of SMS and calls is what the plan’s fair-use quota covers. Removing your number in the profile stops SMS and calls to it at once, everywhere.
What an alert looks like
[DOWN] api.example.com/health
HTTP 503, 3/3 regions
INC-0142
Reply: ACK 482193 / SNOOZE 482193 30Reply commands
| Reply | Effect |
|---|---|
ACK <code> | Acknowledge the incident and stop escalation |
SNOOZE <code> <minutes> | Pause escalation for the given number of minutes |
STOP | Block this number: Heimdall sends it no more SMS or calls |
Ack codes are 6 digits and unique among open incidents. Replies are not case-sensitive.
Phone calls
A call reads a short summary of the incident aloud. Calls are usually a later escalation step, after an unanswered SMS. Acknowledge by SMS, from the dashboard or through the API.
Quotas and fair use
Each plan includes a monthly SMS and call quota. Quotas are fair use, not prepaid credits: going over changes how alerts are delivered, step by step, and never drops one silently.
| Plan | SMS / month | Calls / month |
|---|---|---|
| Free | 10 | 3 |
| Pro | 300 | 60 |
| Team | 1,000 | 200 |
| Business | 3,000 | 500 |
- At 80% of a quota, the organisation owner gets an e-mail and an in-app banner; delivery does not change
- From 100%, only the first SMS or call per recipient for each incident change goes by phone; repeats and reminders go by e-mail or Telegram
- At 300%, no SMS or calls are sent until next month; alerts keep going out on the other channels
- Every alert that moved to another channel is recorded in the incident timeline, with the reason
- Verification SMS never count toward the quota
- Quotas reset at the start of each month