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incident.io offers On-call notification support for: mobile app, SMS, WhatsApp, phone call, Slack and email. Depending on your country, the availability of some notifications, more specifically telecommunication notifications, may vary due to local regulations, carrier restrictions, etc. This document will share the latest information on country deliverability support for our notification channels. Last updated on May 2026.
Mainland China is supported in early access through a separate setup. See On-call in China for the details — including which channels are available and how to add a Chinese phone number. Hong Kong and Taiwan use the standard setup.
incident.io strongly recommends that the mobile app is the primary notification method for getting paged. While we provide SMS and phone notifications as well, factors like local carrier restrictions and government regulations can occasionally make it harder to receive or respond to these particular notification formats.

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Mobile app notifications

The mobile app is currently supported worldwide, with a few limited exceptions. These exceptions include countries facing US sanctions, or lack of Apple Store or Google Play Store presence. These countries include:
  • Cuba
  • Ethiopia
  • Iran
  • North Korea
  • Sudan
  • Syria
  • Uzbekistan
Mainland China uses a separate app — see Mobile app in China. As a reminder, we strongly recommend that the mobile app is the primary notification method for On-call notifications and supplements any SMS or phone notification rules.

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WhatsApp notifications

WhatsApp notifications are available to any number with an active WhatsApp account, in nearly every country. The exceptions are countries where WhatsApp itself is blocked:
  • China
  • North Korea
  • Syria
Deliverability in other countries may occasionally vary due to local regulations. As with SMS, we recommend pairing WhatsApp with the mobile app rather than relying on it as your only high-urgency channel.

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SMS and phone call notifications

Please see below for country deliverability. Support is broken out to the following:
  • Full support - This means the country allows for full SMS or phone call support including delivery and acknowledgement
  • Partial support - This means the country may either have limited deliverability due to carrier restrictions, local government regulation and/or, for SMS notifications, lack of ability to acknowledge via SMS
  • No support - This means the country has no support for these notification methods
If you do not see your country below, please ask us about our deliverability there via help@incident.io. It is likely either we have not had users in that country yet or we have not been asked directly about that country’s deliverability.
If you see the country you need as only partially supported, please check with our team to determine what that means more specifically (ie. is it simply just unable to acknowledge via SMS or are there certain carrier restrictions to be aware of).