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Recent articles

How to use SMS.to's Opt-Out Feature

Some countries - especially EU, USA and Canada-have defined a directive that says among other things: whenever you contact customers via email, SMS, etc. yo...

altegio

To be able to use SMS.to for sending SMS from altegio, kindly follow the below steps. To integrate SMS.to with Altegio.io here are the steps: Open an ...

API Restrictions, Rules & Responses

In order to keep the stability and the deliverability across to all of our customers we implemented some restrictions/rules which are: Load Balance of ...

Auto-recharge Feature

SMS.to now has an auto-recharge feature available. Note: This feature is available through Paypal now. Users are also required to have at least 1 valid ...

Invalid numbers & Rejected messages

As a free service to our customers and to prevent them from unnecessary cost, we check all phone numbers used on SMS.to to see whether they are valid or not...

Invalid and inactive phone numbers

Invalid numbers A number was provided that cannot be a real phone number due to wrong format or is ambiguous e.g. because no country prefix was provided a...