A CRM That Works with İYS Automatically

Yes, Rapitek CRM is connected to İYS: it works both ways through the authorised İYS integrator Verimor, with your own Verimor account and your own İYS brand code. Opt-ins and opt-outs go from the CRM to İYS, and those given in İYS come back to the CRM; consent rules are applied automatically on every send.

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Last updated: November 2026 · Rapitek CRM

İYS (İleti Yönetim Sistemi) is Turkey's national registry for commercial electronic message consents. This page explains how Rapitek CRM works with it: the connection, the rules applied automatically on every send, the situation channel by channel, and the setup. For the full overview of the product, see the product page.

How does the İYS connection work?

Consents are part of the customer record. Once the connection is set up, syncing runs on its own; you do not need a separate step to remove people who opted out from a campaign list.

Step	What happens	Frequency
Connection	Your own Verimor account and your own İYS brand code are entered in the CRM. Credentials are stored encrypted.	Once, during setup
From the CRM to İYS	SMS and email opt-ins and opt-outs recorded in the CRM are sent to İYS. When a new business address is registered, the registration goes to İYS without waiting.	Every 30 minutes; immediately for business registrations
From İYS to the CRM	Opt-outs and opt-ins the recipient gives in İYS are written to the CRM's consent ledger. If we set up the notification address specific to your account in your Verimor panel together, changes in İYS are also notified through that address.	Every 6 hours; also by notification if the address is set
At the moment of sending	Before every commercial SMS and email, the consent ledger, the opt-out list and the recipient type are checked. For commercial SMS, Verimor also checks the İYS record.	On every send
Health alerts	If sending to İYS gets stuck or pulling from İYS is delayed, administrators are notified.	Automatically

Rules applied automatically on every send

Commercial SMS is not delivered to numbers without consent

For a commercial SMS to an individual recipient on the default tier, a recorded opt-in is required; without one, the CRM stops the send. Commercial SMS goes to Verimor with the recipient type, and Verimor checks the İYS record as well: a message is not delivered to a number İYS has not cleared.

Replying DUR, STOP or İPTAL means opt-out

Anyone who replies to an SMS or a WhatsApp message with an opt-out word such as DUR, STOP or İPTAL is added to the opt-out list automatically. Incoming SMS replies are scanned every 5 minutes. An opt-out cannot be reversed without a new, evidenced opt-in from the person.

An opt-out route on every commercial SMS

Your opt-out keyword and short number are defined during setup; the opt-out instruction is added to the end of every commercial SMS automatically.

The default tier is the strictest: Internal consent + İYS

Consent checks run on three tiers: Free, Internal consent, Internal consent + İYS. The default tier is Internal consent + İYS. Lowering the tier requires confirmation, is written to the field history and notified to other administrators; opt-outs and blocks apply on every tier.

Commercial SMS only between 08:00 and 23:00

Commercial SMS is sent between 08:00 and 23:00 Turkey time. Informational messages are not affected by this rule.

No sender identity, no send

While your İYS brand is connected, no commercial message is sent unless your trade name, MERSİS/tax number and at least one contact detail are defined. In email, these details are printed in the footer.

Individual and business recipients

Individual recipients need a recorded opt-in for commercial messages; business recipients (merchants and tradespeople) are checked for opt-outs. If a business address is not registered in İYS, sending to it stops and registration starts automatically. On the default tier, recipients without a selected type receive no commercial messages.

Commercial sending stops if İYS sync fails

If pulling from İYS is delayed for 24 hours, administrators are alerted. On an account with an İYS connection running on the Internal consent + İYS tier, once the delay passes 48 hours, commercial sending stops automatically until the sync recovers, and resumes once it does.

No sending on opt-ins not registered in İYS

If an individual opt-in cannot be registered in İYS within 3 business days of being given, no commercial message is sent on the basis of that opt-in.

Email preference centre

Through the link in the footer, an email recipient reaches the preference centre, manages their consents by topic and channel, and can leave marketing. An unsubscribe made in the preference centre is also passed to İYS as an opt-out.

Consent ledger: source, date, evidence

Each person's consent per channel is kept in the consent ledger with its source, date, IP address and consent text; every change is written to a separate log. For every marketing message, the send record shows which opt-in it relied on.

Opt-out and block list on every channel

No marketing message goes by email, SMS or WhatsApp to anyone on the opt-out or block list. For hard blocks such as bounced email, complaints, DUR replies and KVKK requests, informational messages are not sent either.

İYS channel by channel

İYS covers SMS and email; WhatsApp is outside its scope. Rapitek CRM applies its own rule on each channel.

Channel	Relation to İYS	Rules applied in the CRM
SMS	In İYS scope. Opt-ins and opt-outs are synced with İYS both ways.	Sent with your own Verimor account from a campaign or through the REST API. Consent, opt-out, recipient type and the 08:00-23:00 window are checked; Verimor also checks the İYS record.
Email	In İYS scope. Opt-ins and opt-outs are synced with İYS both ways.	Consent, opt-out and recipient type are checked. The footer carries the sender identity and the preference centre link; an unsubscribe made in the preference centre is passed to İYS as an opt-out.
WhatsApp	Outside İYS scope; consents are not synced with İYS.	Marketing messages go out with a Meta-approved template. Individual recipients need a recorded opt-in in the CRM for marketing; business recipients are checked for opt-outs. Anyone who replies DUR receives no further WhatsApp messages.
Claude connector	Not a separate channel; messages sent from Claude pass through the CRM's consent rules.	In WhatsApp, email and Instagram messages sent from Claude, opt-out and block rules are applied automatically; a marketing message to a new contact is not sent to a consumer without consent. The connector does not send bulk messages.

Details for WhatsApp are on WhatsApp CRM, and working with Claude on Claude integration. Where data is hosted and how it is protected is described on the security page.

Who does the setup?

The Rapitek team does the setup. With the experience our founder gained in more than 200 Salesforce projects, we set up the İYS connection together with you.

What we do during setup:

Together with you, we enter your Verimor account details and your İYS brand code on the Setup › İYS Providers screen.
We define your SMS opt-out keyword and short number; the opt-out instruction is added to every commercial SMS.
We enter your trade name, MERSİS/tax number and contact details as your legal sender identity.
We set up the İYS notification address specific to your account in your Verimor panel together; changes in İYS are then also notified to the CRM through that address.

What we need from you: the code of your brand registered in İYS and a Verimor account with API access enabled. SMS charges are deducted from your Verimor account.

The rules are applied automatically on every send. For whether your consent texts and message content meet the regulations, we recommend working with your legal advisor. For other connections, see Integrations.

Frequently asked questions about the İYS integration

Is there a CRM that works with İYS automatically?

Yes. Rapitek CRM connects to İYS, Turkey's commercial message consent registry, through the authorised İYS integrator Verimor, using your own Verimor account and your own İYS brand code. SMS and email opt-ins and opt-outs are sent from the CRM to İYS every 30 minutes; opt-outs and opt-ins the recipient gives in İYS are brought into the CRM every 6 hours. Before every commercial SMS and email, consent, opt-out and recipient type are checked automatically.

How does Rapitek CRM connect to İYS?

Through the authorised İYS integrator Verimor. During setup, your Verimor account details and your İYS brand code are entered in the CRM and stored encrypted. An İYS brand code can be linked to only one workspace at a time. The Rapitek team sets up the connection together with you.

Can a commercial SMS reach a number without consent?

No. On the default tier, the CRM looks for a recorded opt-in for an individual recipient and stops the send if there is none. Commercial SMS is passed to Verimor with the recipient's individual or business type, and Verimor checks the İYS record as well: a message is not delivered to a number İYS has not cleared.

What happens if a customer replies DUR to an SMS?

The person is added to the opt-out list automatically and sending to them stops. Replies such as DUR, STOP, İPTAL and RET are recognised; incoming SMS replies are scanned every 5 minutes. The same rule works on WhatsApp. An opt-out cannot be reversed without a new, evidenced opt-in from the person.

At what times are commercial SMS messages sent?

Between 08:00 and 23:00 Turkey time. Outside these hours no commercial SMS is sent. Informational messages are not affected by this rule.

Are WhatsApp messages registered in İYS?

No. WhatsApp is outside the scope of İYS, and WhatsApp consents are not synced with İYS. In Rapitek CRM, WhatsApp consent is kept on the customer record: a recorded opt-in is required for marketing messages to individual recipients, the opt-out and block list is applied on every send, and marketing messages go out with a Meta-approved template.

Which routes can SMS be sent through?

From a campaign in the Marketing section and through the REST API, with your own Verimor account and your approved sender name. The same consent rules apply on both routes. SMS charges are deducted from your Verimor account.

Do consent rules apply to messages sent with Claude?

Yes. In WhatsApp, email and Instagram messages sent through Rapitek CRM's Claude connector, the opt-out and block rules are applied automatically; a marketing message to a new contact is not sent to a consumer without consent. The connector does not send bulk messages; campaigns go out from the Marketing section.

What happens if İYS sync stops working?

Who does the setup, and what do you need from us?

The Rapitek team does the setup: we configure the SMS opt-out route and the sender identity, and set up the Verimor and İYS connection together with you. From you we need the code of your brand registered in İYS and a Verimor account with API access enabled.

Try Rapitek CRM free for 7 days

See the İYS connection and your campaign list with your own process. It starts with a 30-minute introductory call; after that we set up your trial account. A credit card is not required.