Author
Serhii Omelchenko
Global AEO/SEO Manager
Serhii is Global AEO/SEO Manager at Telnyx, based in Amsterdam, he is focused on making communications infrastructure findable and credible across both traditional search and AI-driven discovery. He previously led SEO and GEO strategy for some of the world’s most recognized consumer brands.
- 99
- Articles
- 2017
- Joined
Latest articles
Showing the 50 most recent of 99 articles.
MessagingHow to Text Italy
Learn how to text Italy using the +39 country code, correct Italian phone number formats, and cost-effective ways to send SMS to Italian numbers.
MessagingHow to Text Russia
Learn how to text Russia from abroad, including the +7 country code, Russian phone number format, and the best apps and services for texting Russia.
MessagingHow to Text Ireland
Learn how to text Ireland with the +353 country code, correct Irish phone number formats, and step-by-step examples for texting from the US or UK.
MessagingHow to Text China
Learn how to text China from the US or anywhere else. Get China's country code, mobile number format, and tips for reliable SMS delivery.
MessagingHow to Text Philippines Numbers from the US
Learn how to text Philippines numbers from the US, including the +63 country code, correct number format, costs, and free ways to send SMS.
SIP TrunkingWhat is PSTN? Definition, how it works, and future
What is PSTN? Learn how the public switched telephone network works, PSTN vs. VoIP differences, and the global phase-out timeline for landlines.
MessagingTwilio vs Telnyx SMS Pricing
Compare Twilio vs Telnyx SMS pricing for 2026. See per-message US rates, carrier fees, and hidden costs to find out which SMS API is cheaper at scale.
WirelessIoT Devices Definition, Examples, and Full List
Learn what IoT devices are, see real-world examples, and explore a full list of IoT device types for home, industry, and enterprise deployments.
Voice7 Best Call Recording Software for Business (2026)
Compare the best call recording software for business in 2026, including compliance-ready and enterprise options, plus how to build recording on Telnyx APIs.
NumbersWhat Is a Toll-Free Number? Definition and How It Works
Learn what a toll free number is, how toll-free calls work, common prefixes like 800 and 866, and how to get a toll-free number for your business.
Conversational AIInbound Calls Definition, Examples, and Handling Tips
Learn what inbound calls are, how they differ from outbound calls, and how to handle inbound calls efficiently with modern software, automation, and APIs.
TelnyxHow to Reply to an Email Professionally: Tips and Examples
Email APIBuilding an Ecommerce Email Automation Strategy
Ecommerce email marketing drives $45 for every $1 spent. Learn the campaigns that convert, why delivery infrastructure matters, and how owning your email stack beats reselling.
Email APIEmail Automation Best Practices That Survive Production
Email automation best practices that hold up in production. Triggers, segmentation, authentication, and why shared IPs put your campaigns at risk.
Email APIBest Email Marketing Service Providers Compared for 2026
MessagingHow an SMS chatbot cuts support tickets and recovers no-shows
Learn how an SMS chatbot works, which phone number to use, and how to build one with AI. Covers healthcare use cases, free options, and platform selection.
![[Content] WhatsApp Business for Hospitality featured image](https://cms.telnyx.com/api/media/file/featured-whatsapp-business-hospitality-15.png?prefix=cms-media)
WhatsApp Business APIWhatsApp Business for Hospitality
Learn how WhatsApp Business for hospitality helps hotels enhance guest engagement, streamline bookings, and boost customer satisfaction at scale.
MessagingWhatsApp Business API: Complete Guide for Developers (2026)
Learn what the WhatsApp Business API is, how it works, what it costs, and how to choose the right provider for enterprise messaging at scale.
VoiceHow to Call Egypt
This guide provides helpful tips for calling Egypt from the U.S. Learn how to make calls to Egypt with confidence.
TelnyxWhat Is Branded Calling and How It Works
Branded calling displays a verified business name, logo, and call reason on a recipient's phone screen before they answer. Learn how it works with STIR/SHAKEN authentication.
TelnyxWhat Is a Private 5G Network?
MessagingWhat is SMS? Complete guide to short message service
SMS stands for Short Message Service, a protocol defined in the GSM standard that caps messages at 160 characters per segment. It runs on cellular networks, so it works on every mobile phone without an app or data connection.
TelnyxThe 6 Best SMS Marketing Platforms in 2026
The 6 best SMS marketing platforms compared by API access, pricing, compliance tools, and deliverability. Find the right platform for your business.
TelnyxPush Notifications vs SMS Explained
Push notifications vs SMS compared: reach, engagement, cost, and use cases. Learn which channel fits your messaging strategy and when to use both.
TelnyxWhat Does Opt Mean in Text Messages
Opt-in and opt-out text messages explained: what opt means, how consent works for business texting, and the TCPA compliance rules you must follow.
TelnyxWhat Is SMS Marketing and How to Get Started
What is SMS marketing and how to get started: strategy, compliance, campaign types, and the APIs you need to send business texts at scale.
VoiceWhat Is VoIP and How Does It Work
VoIP (Voice over Internet Protocol) replaces analog telephony with internet-based voice. Learn how it works, the main types, and how to pick a provider.
MessagingSMS vs MMS Explained for Developers
We break down the differences between SMS and MMS, from pricing to messaging restrictions.
GeneralSMS Compliance Guide for US Business Texting
Learn what businesses need to know about SMS compliance in 2026: rules, risks, and best practices for global and U.S. texting.
VoiceHow to Call Israel
This guide provides helpful tips for calling Israel from the U.S. Learn how to make calls to Israel with confidence.
TelnyxRCS Business Messaging Pricing How It Works and What to Expect
RCS business messaging pricing depends on message type, destination, volume, and carrier. Learn how pricing works and what to ask providers before you commit.
NumbersHow long does a number port take with timelines explained
Standard number ports take 3 to 7 business days. Telnyx FastPort completes eligible ports in 1 to 4 days. See full timelines by port type and country, plus what causes delays.
SIP TrunkingHow to Call Nigeria
This guide provides helpful tips for calling Nigeria from the U.S. Learn how to make calls to Nigeria with confidence.
MessagingWhat is an SMS gateway and how does it work?
An SMS gateway routes text messages between applications and mobile networks. Learn how SMS gateways work, compare top providers, and integrate with the Telnyx SMS API.
VoiceVoice Call API Basics Every Builder Should Know
A voice call API lets you programmatically make, receive, and control phone calls. Learn how voice call APIs work, what to look for, and compare top providers.
VoiceHow to Call the Netherlands
The Netherlands country code is +31. Learn how to call the Netherlands from any country with exit codes, dialing formats, area codes, and cost tips.
Conversational AIHow to Call India
This guide provides helpful tips for calling India from the U.S. Learn how to make calls to India with confidence.
Conversational AIHow to Call Mexico
The Mexico country code is +52. Learn how to call Mexico from any country with exit codes, dialing formats, area codes, and cost tips.
Conversational AIHow to Call Indonesia
This guide provides helpful tips for calling Indonesia from the U.S. Learn how to make calls to Indonesia with confidence.
Conversational AIHow to Call Brazil
This guide provides helpful tips for calling Brazil from the U.S. Learn how to make calls to Brazil with confidence.
Conversational AIHow to Call Bangladesh
This guide provides helpful tips for calling Bangladesh from the U.S. Learn how to make calls to Bangladesh with confidence.
Conversational AIHow to Call Russia
This guide provides helpful tips for calling Russia from the U.S. Learn how to make calls to Russia with confidence.
Conversational AIHow to Call Japan
This guide provides helpful tips for calling Japan from the U.S. Learn how to make calls to Japan with confidence.
Conversational AIHow to Call Philippines
This guide provides helpful tips for calling the Philippines from the U.S. Learn how to make calls to the Philippines with ease.
VoiceHow to Call Jordan
This guide provides helpful tips for calling Jordan from the U.S. Learn how to make calls to Jordan with confidence.
VoiceHow to Call Norway
This guide provides helpful tips for calling Norway from the U.S. Learn how to make calls to Norway with confidence.
VoiceHow to Call Italy
This guide provides helpful tips for calling Italy from the U.S. Learn how to make calls to Italy with confidence.
VoiceHow to Call Vietnam
This guide provides helpful tips for calling Vietnam from the U.S. Learn how to make calls to Vietnam with confidence.
VoiceHow to Call France
This guide provides helpful tips for calling France from the U.S. Learn how to make calls to France with confidence.
VoiceHow to Call Costa Rica
This guide provides helpful tips for calling Costa Rica from the U.S. Learn how to make calls to Costa Rica with confidence.
