FAQ

You can become a customer by filling in the registration form. We will send an email to verify your address. You can then log in and immediately start testing our services and purchase extra credit.

You can set the sender (Sender ID/SID) of your sms yourself. The sender can contain alphanumeric (less than 11 characters) or numeric (1-16 numbers) characters. Not all networks accept all values, however. If a network does not accept a certain value, we will replace the value by an accepted one.
For example: Belgian providers accept no Belgian mobile phone number and no alphanumeric value as sender. You should use a fixed Belgian number, a foreign number or a hired virtual number instead.

You can indeed, but not all providers accept this. If a network does not accept a textual value, we will replace it by an accepted number. Belgian operators no longer accept textual senders, for example.

In your account you can find the delivery reports under ‘sent messages’. Here you can see the general delivery statistics per day/month/batch. For each message and each number you can even check when the sms arrived, or see what has gone wrong. Examples: a mobile phone memory is full, the mobile phone has no signal or is switched off, a wrong number, etc.

You can buy credit using a bank card or by bank transfer. With a bank card payment the credit is immediately available, with payment by bank transfer this can take 1 to 2 workdays. For urgent payments you can always contact customer service to have a payment by bank transfer approved more quickly.
Postpaid customers receive an invoice once a month or quarter by post.

For the basic sms tool, the bulk sms tool, the HTTP gateway and the mail2Sms there is no activation and no monthly costs are charged. You only pay a price per sms sent. For virtual numbers and premium sms services we do usually charge an activation charge and a price per month. Contact us for more information.

Our customer service is available round the clock for urgent matters and by email and telephone. For assistance with use and general questions, you can phone Monday to Sunday between 08:00 and 20:00 hours on 0032 2 888 6991, or by email to @

After purchasing credit you are sent the invoice by email. This can take from 1 to 3 workdays. Contact us if you want your invoice sooner. It is also possible to send the invoice by post on request.
Postpaid customers receive the invoice both electronically and by post.

You can buy credit using a bank card or by bank transfer. With a bank card payment the credit is immediately available, with payment by bank transfer this can take 1 to 2 workdays. For urgent payments you can always contact customer service to have a payment by bank transfer approved more quickly.
Postpaid customers receive an invoice once a month or quarter by post.

We attach great importance to our reliability. West European destinations are closely monitored round the clock - we always have different redundant connections available. In practice we can state that your sms will always arrive within 15 seconds of sending. This can only take longer if the mobile phone is not accessible.

Integrating sms can be done in a lot of different ways. As standard we provide an API through the HTTP gateway (link) or through mail2Sms (link). We can however also offer other options (CSV download and upload, SMPP, SOAP, etc.) and even a custom-made API.

With normal use your credit remains valid without limits. If your account is no longer active, the credit will be deactivated after around 3 years.

A cheaper price will be set per sms depending on how much credit is purchased each time. This price is valid for three months (unless otherwise agreed). After three months the credit is still valid, but the price per sms will again fall to the normal price.

As distinct from other suppliers we do more than just send the sms messages to the 4 Belgian operators. Cellcom has its own international routing platform on which we control number porting and roaming ourselves. On this basis we immediately send the sms to the right destination. We have different options for each destination that offer redundancy in the case of any problems. As a result we can also guarantee reliable delivery for roaming.
Some foreign providers (and a number of smaller Belgian companies) send their sms traffic along cheap foreign routes. This can result in problems when automatic filters detect that their traffic is not going from mobile phone to mobile phone and does contain commercial messages. It can then be the case that traffic does not arrive (temporarily or otherwise).
This is not the case with Cellcom. You are always assured of the best possible quality. We will also resend the message a number of times if with a first attempt the mobile phone appears to be inaccessible (no network cover or a switched off).

No! We protect all your data and will never share it with third parties without your explicit permission.

This depends on the SID (sender) you have set. If this does not exist, or if the number is not set to receive sms messages, the sender will see an error message. In this case it is important to write your sms in such a way that no reply by sms is invited. Define a clear alternative action. For example: “Call ... for more info" or "More info: www.website.be".
Do you want to receive a reply by sms? Ask for the activation of a virtual number. You receive the sms messages in an online inbox, or we send them on by email.

Yes, we support more than 200 countries. For some countries we do charge a supplement of €0.05 per sms. Contact the customer service for special prices and volume discounts.

You can do this by logging into the system. All information such as contact details, email addresses and invoice information can be changed there.