How to stop unwanted marketing texts and calls in Turkey with IYS

Promotional text messages, telemarketing calls and advertising e-mails count as "commercial electronic messages" under Turkey's Law No. 6563 on the Regulation of Electronic Commerce, and the consents behind them are stored in the Message Management System, known in Turkish as Ileti Yonetim Sistemi (IYS). That means you do not have to chase every company separately: you can see which brands hold permission to reach you by call, text or e-mail and withdraw it from a single screen.

This guide shows how to sign in to the IYS citizen application with e-Devlet or a verification code, read your permission list, reject permissions individually or in bulk, and complain if messages keep arriving. Everything is free of charge and works from a phone.

1. Choose how you will sign in There are two ways into the IYS citizen application: with your e-Devlet account, or with a verification code sent to your phone number or e-mail address. The e-Devlet route is the fuller one, because it lets you collect several numbers and e-mail addresses in one profile and manage them together. With a verification code you only see the permissions of that single contact address. If you sign in with a phone number you manage the text and call channels, so e-mail permissions require a separate sign-in with that address.
2. Sign in through e-Devlet Log in to e-Devlet and search for the service named "Ticari Elektronik Ileti Yonetim Sistemi", listed under the Ministry of Trade. Open it and, once your identity is verified, you are taken to the IYS citizen screens. You can reach the same place by opening the IYS citizen site directly and choosing the e-Devlet sign-in option. On first entry you are asked to accept the privacy notice and create your profile.
3. Sign in without e-Devlet using a verification code If you have no e-Devlet password, type your phone number or e-mail address into the IYS citizen application and request a verification code. The code arrives by text message; if text messages are a problem, use the option that reads the code out to you in an automated phone call. Enter the code and confirm. If nothing arrives, wait a few seconds and use the resend link, and check that the number is typed correctly without the leading zero.
4. Add your contact addresses to the profile If you signed in with e-Devlet, open your profile page and add every phone number and e-mail address you want to manage. You can give each address a short nickname, so labels like "work line" or "old number" keep the list readable. You can then switch between addresses with one tap and review permissions for each separately. Removing a number from your profile does not cancel its permissions, so reject first and remove afterwards if you wish.
5. Read your permission list The permissions page lists the brands and service providers that hold a record for the selected contact address. Each row shows the status per channel: text permission, call permission and e-mail permission each carry their own approved or rejected value. Individual permissions and trader or craftsman permissions sit in separate tabs, so use the individual tab for your personal number. If you cannot spot a brand, type part of its name into the brand search box to filter the list.
6. Reject permissions one by one Find the brand that bothers you and tap the status control for the channel you want to close, switching it from approved to rejected. Channels are independent: rejecting text messages does not stop calls, so close both if you want silence. Save the change and the status updates on screen. If a company operates several brands, each appears as its own row and each has to be closed separately.
7. Use bulk rejection to close everything To shut down the whole list at once, switch on bulk selection. You can select all text, all call or all e-mail permissions in one move, or tick only the brands you want. When the selection is ready, use the reject selected action and confirm the bulk operation dialog. Once it finishes, the screen reports how many permissions were updated; scroll through the list to confirm the statuses now read as rejected.
8. Wait three working days and check Service providers must stop sending to that contact address within three working days of your rejection. A few messages may still arrive during that window, so do not panic immediately. If messages continue after the deadline, note the sender name and the date and time of the message. The transaction history screen for each brand shows the date you submitted the rejection, which you can quote in your complaint.
9. File a complaint if messages continue If more than three working days have passed since your rejection and commercial messages keep arriving, you may first contact the service provider. If that leads nowhere, open the Ministry of Trade service named "Ticari Elektronik Ileti Sikayet Sistemi" on e-Devlet and submit a complaint. The form asks for the sender, the channel and the date and time the message arrived, so take a screenshot before deleting anything. Filing the complaint through e-Devlet is free.
10. Handle senders that are not on your list Not every company that messages you will appear in your permission list, and receiving commercial messages from a sender that is not listed is itself a breach. Use the same e-Devlet complaint service for those. The rules also require every commercial message to offer an easy, free way out through the same channel it arrived on, so the opt-out instruction inside a text or the unsubscribe link at the bottom of an e-mail counts as a valid rejection. Using those does not take away your right to reject through IYS.

⚠ This guide is general information. Yudum cannot be held responsible for the outcome of following it; for official procedures always rely on the institution's own statement. Steps and fees change over time.

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