--- title: Deniz Yakışıklı | Telnyx canonical: https://telnyx.com/authors/deniz-yakisikli --- # Deniz Yakışıklı | Telnyx Author # Deniz Yakışıklı Sr. Product Marketing Manager Deniz is a Senior Product Marketing Manager at Telnyx with 10 years of experience in technology and healthtech marketing. She previously led go-to-market initiatives at Philips Healthcare, Vodafone, and The Coca-Cola Company. Originally from Türkiye and based in Amsterdam, she holds an MBA in Marketing Management from the University of Amsterdam and a Bachelor's degree in Industrial Engineering from Boğaziçi University. In her free time, Deniz enjoys yoga, traveling, and discovering nice restaurants. 13 Articles 2020 Joined ## Latest articles Everything Deniz has published, most recent first. * [![WhatsApp Business API message on phone](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/featured-whatsapp-business-api-3.png?width=3600&format=webp)**WhatsApp Business API**12, Oct 2026WhatsApp Business API: Pricing, Setup and Limits Guide for 2026WhatsApp Business API explained for 2026: how templates and the 24-hour window work, what Meta and your provider charge, and how to send your first message.](https://telnyx.com/resources/whatsapp-business-api) * [![One phone number carrying WhatsApp, SMS and](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/featured-best-whatsapp-api-provider-1.png?width=3600&format=webp)**WhatsApp Business API**8, Oct 2026The best WhatsApp API providers in 2026The 9 best WhatsApp API providers of 2026, ranked: each one's fee on top of Meta's, WhatsApp calling support and the team it suits best.](https://telnyx.com/resources/best-whatsapp-api-provider) * [![Number porting issues and fixes](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/featured-number-porting-issues-2.png?width=3600&format=webp)**Numbers**2, Oct 20268 global number porting issues and how to solve themNumber porting issues stall a cutover when the losing carrier rejects the order. See the 8 rejection causes, what carriers cannot refuse and the fix for each.](https://telnyx.com/resources/number-porting-issues) * [![SIP DID call path: a caller dials a number, Telnyx routes it over a SIP trunk, the SIP INVITE reaches the PBX and extension 204 rings](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/featured-sip-did-2.png?width=3600&format=webp)**SIP Trunking**29, Sep 2026SIP DID numbers: what they are and how they workLearn what a SIP DID number is, how DIDs route over SIP trunks and channels, what a DID costs, and how to choose a SIP DID provider you can rely on.](https://telnyx.com/resources/sip-did) * [![Email Marketing Service Providers Compared for 2026](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/featured-email-marketing-service-providers-compared-for-2026-padded.png?width=3600&format=webp)**Email API**25, Sep 2026Best email marketing service providers compared for 2026Compare 11 email marketing service providers on editor, automation, deliverability, integrations, support and pricing, plus high-volume sender rules and a trial checklist.](https://telnyx.com/resources/best-email-marketing-service-providers) * [![email automation best practices featured image](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/featured-email-automation-best-practices-3.png?width=3600&format=webp)**Email API**24, Sep 2026Email automation best practices that hold up at scaleEmail automation best practices for teams running production sends: domain authentication, per-message state, and retries with exponential backoff from one API key.](https://telnyx.com/resources/email-automation-best-practices) * [![Voice AI that never leaves the EU](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/file_62---4083d9b3-1b76-4c91-b5f6-660c19553aad.jpg?width=2560&format=webp)**Voice**10, Sep 2026Voice AI that never leaves the EUMost enterprises deploying Voice AI in Europe have a data residency strategy. Far fewer have a data sovereignty strategy. Sovereignty is not a setting you select. It is a property of the call path.](https://telnyx.com/resources/voice-ai-europe-data-sovereignty) * [![Email API featured image](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/email-api-featured.svg)**Email API**10, Sep 2026Email API: Send Transactional Email on One PlatformThe Telnyx Email API is in beta, on the same carrier-owned platform that already runs your SMS, voice, and WhatsApp. One API key, one dashboard, one bill. This guide covers what it is, why we built it, and how to send your first email in five minutes.](https://telnyx.com/resources/how-to-send-emails-using-api) * [![Choosing the best phone number for your contact center](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/Local_Toll_Free_Number_Search_1_7310e9192b.png?width=1920&format=webp)**Numbers**10, Sep 2026Choosing the best phone number for your contact centerShould your contact center use a local or toll-free number? Learn how each impacts answer rates, customer trust, and engagement.](https://telnyx.com/resources/local-vs-toll-free-numbers-contact-center) * [![Build Telnyx apps faster with AI agent skills](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/feature_image_Code_Telnyx_in_Plain_English_1770740875_cc84cfed46.png?width=2040&format=webp)**Conversational AI**10, Sep 2026Build Telnyx apps faster with AI agent skillsLet your AI coding assistant write Telnyx integrations. Install once, then describe what you want to build in plain English.](https://telnyx.com/resources/ai-agent-skills-claude-code) * [**Telnyx**9, Sep 2026Why did PatientSync choose Telnyx over Amazon Connect?PatientSync left Amazon Connect for Telnyx to launch AI-driven call flows with better performance and global reliability.](https://telnyx.com/resources/patientsync-telnyx) * [**Conversational AI**9, Sep 2026Data Sovereignty for Voice AI in AustraliaMost Voice AI platforms route Australian data through US and EU infrastructure. Telnyx runs 4,000+ co-located GPUs in Sydney with sub-500ms round-trip latency and full data sovereignty — at rest, in motion, and during processing.](https://telnyx.com/resources/australia-data-sovereignty-voice-ai) * [![Here’s how to check if your number can be ported](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/number_portability_checker_final_hero_f92e4d3f68.jpg?width=1120&format=webp)**Verify API**3, Dec 2025Here’s how to check if your number can be portedCurious about whether you can port your numbers or not?](https://telnyx.com/resources/number-portability-check-live) [Start building](https://telnyx.com/sign-up) ### Ask AI * [![GPT](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/chatgpt_icon-ea55e09d.jpeg?width=92&format=webp)](https://chat.openai.com/?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Claude](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/claude_icon-c7c8eef3.webp?width=92&format=webp)](https://claude.ai/new?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Perplexity](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/perplexity_icon-cd5b74f1.webp?width=92&format=webp)](https://www.perplexity.ai/search?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Gemini](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/gemini_icon-4ff1cbf4.webp?width=92&format=webp)](https://www.google.com/search?udm=50&aep=11&q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Grok](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/grok_icon-e588e5bd.webp?width=92&format=webp)](https://x.com/i/grok?text=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)