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How to Increase Deliverability of Verification Codes?

Deliverability is a key indicator of the effectiveness of temporary numbers, reflecting the percentage of successful SMS receipt for service activation. This parameter is dynamic and depends on many technical and geographical factors. On our service, you can track delivery statistics in real time through the Prices section, where up-to-date information on specific platforms is provided for each type of number (for example, for Telegram, WhatsApp or other applications). 

SMSFAST deliverability score

These figures are formed based on the analysis of thousands of daily operations and help you choose the optimal solution for your task.

It is important to understand that problems with the delivery of codes are often related not to the quality of the number, but to the nuances of the registration process. The use of temporary numbers is fundamentally different from personal mobile numbers due to the specifics of their technical implementation.

One of the critical factors is the mismatch between the geolocation of the number and your physical location. For example, if you purchase a US number while in Russia, services like Google or Telegram may automatically block the code from being sent, interpreting this as suspicious activity.

To minimize the risks, we strongly recommend that you follow two key steps before registering. 

  1. First, be sure to clear the cache of the browser or mobile application through which verification is performed. The accumulated data may cause conflicts when setting session parameters, especially if you have previously tried to register with other numbers. 
  2. Secondly, always use a VPN or proxy server corresponding to the country of the purchased number. This creates a consistent digital environment: the IP address, time zone, and language settings begin to match the phone number, which reduces the risk of security algorithms being triggered.

Remember that even under ideal conditions, 100% deliverability is unattainable due to the specifics of telecom operators and the policies of target platforms. However, compliance with these rules increases the success of operations, which is confirmed by our statistics.