Yandex Cloud Notification Service quotas and limits
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Updated at May 13, 2025
In Cloud Notification Service, there are certain limits, i.e., technical constraints of the Yandex Cloud architecture. You cannot change the limits.
Limits
| Type of limit | Value |
|---|---|
| Maximum number of mobile push notification channels per cloud | 20 |
| Maximum number of in-browser push notification channels per cloud | 10 |
| Maximum number of SMS notification channels per cloud | 10 |
| Maximum number of SMS notification channels with a shared sender per cloud | 1 |
| Maximum number of SMS notification channels with an individual sender per cloud | 10 |
| Maximum number of test phone numbers per SMS notification channel | 10 |
| Maximum number of SMS messages per cloud1 | 100 per month |
| Maximum mobile push notification message size | 4 KB |
| Maximum browser push notification message size | 3 KB |
| Maximum SMS message length | 1,600 characters (10 segments) |
| Maximum name length for a push notification channel | 40 characters |
Maximum length for user data (CustomUserData) per mobile endpoint |
256 characters |
| Maximum length for a device ID per mobile endpoint | 256 characters |
| Maximum rate of requests to create or update notification channel attributes per cloud | 30 requests per second |
| Maximum rate of requests to send an SMS message per cloud | 20 requests per second |
| Maximum number of SMS messages to verify one test number | 5 per day for one number |
| Maximum number of SMS messages to verify test numbers per cloud | 20 per day |
1 Moving forward, the limit on the maximum number of SMS messages per cloud will become a quota. You will be able to increase it by contacting support.