The following topics are discussed in this guide. Click a topic to skip directly to this information:

• Spain Short Code Content Restrictions
• Other Spain Short Code Restrictions
• Opt-in and Opt-out Requirements

To apply for Spain Short Code please follow the guidelines here.

Spain Short Code Content Restrictions

See the table below for the type of content that is or is not allowed in Spain.

Please also refer to Twilio’s AUP for additional content restriction details. 

Type of Message Content	Allowed	Not Allowed
Adult
Alerts
Gambling / Casinos
Illegal products or services
Malware
Marketing
Multilevel trading
Notifications
OTP*
Political causes / politicians
Promotions
Religious
Sensitive data (end user)
Sexual content (explicit)
Spam / phishing
Special offers
Third-party rights violations (copyrights, registered trademarks)

Other Spain Short Code Restrictions

Opt-In and Opt-Out Requirements

There is no specific regulation on opt-in process, but carriers can request evidence of opt-in at any time, so following these best practices is recommended:

• Prior consent or right to opposition will be collected by means of a checkbox, either online or offline. Pre-checking the box as default is to be avoided at all times.
• Advertising by SMS is possible provided that people have explicitly agreed to be approached, at the time of collection of their mobile phone number.

Two exceptions to this principle:

• if the person being prospected is already a client of the company and the prospecting concerns products or services similar to those already provided by the company.
• if the prospect is not of a commercial nature (charitable for example).

In both cases, the person must, at the time of collecting his telephone number:

• be informed that their mobile phone number will be used for prospecting purposes,
• to be able to oppose this use in a simple and free way.

Each message should:

• specify the identity of the advertiser,
• propose a simple way to oppose receiving new messages (for example, a non-premium phone number where it is possible to unsubscribe at the end of the message). 
• In case of marketing purposes the opt-out must be well documented, users can opt out by sms, email, sending a form, contacting brand. There must always be a way to opt out and it must be documented. 

Opt-in and Opt-out details must be provided to operate a Short Code. Both need to be well documented on the Short Code owner's Terms and Conditions.

Please refer to Twilio's Acceptable Use Policy for further information.