What Is the Message Management System?
İYS is a mandatory consent management platform established with government support and by the Union of Chambers and Commodity Exchanges of Türkiye, protecting both the sender and the recipient.
A natural or legal person, or an organization, that delivers notifications to recipients for advertising, promotion, campaign, change and similar purposes.
The people who receive the commercial electronic messages sent by the sender. Citizens can manage the messages they receive through İYS.
İYS automatically blocks delivery to numbers that do not wish to receive commercial messages, protecting the sender from complaints and penalties.
Under Law No. 6563 and as of the effective date of 4 January 2020, all senders of commercial messages are required to be registered with İYS.
Who Must Obtain Consent?
Shopping malls, brands, food companies, banks, hospitals and all natural or legal persons that send commercially-oriented messages must operate in compliance with the İYS system.
The İYS system cannot block spam calls — it only filters commercially-oriented electronic messages (SMS, email, calls). OTP and purely informational messages are out of scope.
You can complete your corporate registration by logging in via e-signature, e-Devlet or iys.org.tr.
Go to iys.org.trHow Does İYS Work?
All commercial electronic message consents are stored in İYS. Service providers upload the consents they obtain to İYS.
Recipients can see and adjust when, where and through which channel they granted consent. All operations are carried out on iys.org.tr.
The İYS filter is applied during delivery; no message is sent to recipients who have exercised their right to opt out.
How Do You Join İYS?
What Should SMS Content Look Like?
The SMS content must include a short number through which an opt-out message can be sent.
For tradespeople, the name, surname and Turkish ID number must appear within the message content.
For merchants, the MERSİS number and commercial title must be visible in the message.
At least one means of contact must be included, such as a name, phone, email or fax.
The message content must clearly state that it is a promotion, campaign or informational notice.
The content must contain a product or service detail link or a customer service number.
How Do Citizens Use İYS?
The Message Management System protects not only senders but also safeguards the rights of recipients.
See from a single platform which companies you have authorized to send messages and through which channels.
Prevent unwanted companies from reaching you through their call, message or email channels.
If you keep receiving messages despite having blocked them, file a complaint through İYS.
Manage all your message consents by logging in via iys.org.tr or e-Devlet.
Common Questions About İYS
Start Sending İYS-Compliant SMS
As a BTK-licensed operator, TURKEYSMS helps you deliver your commercial messages securely and within the legal framework, in line with İYS-compliant sending practices.