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. |
| 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. | |
| 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 for you.
What we do during setup:
- 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?
How does Rapitek CRM connect to İYS?
Can a commercial SMS reach a number without consent?
What happens if a customer replies DUR to an SMS?
At what times are commercial SMS messages sent?
Are WhatsApp messages registered in İYS?
Which routes can SMS be sent through?
Do consent rules apply to messages sent with Claude?
What happens if İYS sync stops working?
Who does the setup, and what do you need from us?
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.
