Most SMS API providers will have a Service-Level

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A good SMS API provider should also use direct network or Tier 1 connections, rather than lower cost (to the provider) and low reliability “gray routes.” Under Tier 1 connections, messages are sent directly to the relevant mobile network. The SMS API provider should also have redundancy measures in place in case their Tier-1 provider connection is unavailable.

Agreement or canada telegram SLA in place, with terms stipulating the amount of uptime they guarantee in a given period. The highest level of network availability is “5 nines”, which equates to 99.999% uptime or around 5.26 minutes of downtime each year.

4. Compliance Status
SMS marketing must comply with relevant legal standards and regulatory compliance regimes. This is especially true in the case of bulk SMS messaging, where for example in regions like the US and Europe, explicit consent is required from consumers before they subscribe to an SMS text list, and clear and specific opt-out instructions must be provided to message recipients.

The SMS API provider you choose therefore needs to provide assurances that it can comply with all relevant regulatory and legislative requirements that apply to where text messages are being sent.


5. SMS API Integration Time
In a typical scenario, SMS API providers will unlock their documentation, leaving it up to you or your developer to integrate the SMS API into your existing systems. With an experienced developer in-house, this client-side integration may have the SMS system operational within an hour. However, this depends on whether the SMS API provider’s documentation is clear and complete. You should also look into the type of assistance they offer for client-side integrations.