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Angelena Smishko

Technical content writer specializing in integrations of Zadarma services with CRMs and AI platforms. Breaks down complex topics into simple terms, creating clear and easy to follow guides. Her articles include step-by-step instructions and real-life use cases to demonstrate how Zadarma products meet the clients' needs.

Within the company, Angelena brings deep expertise in SMS and calls routing, ensuring clients always have smooth experience and reliable communication channels. She also helps customers in setting up the phone system (PBX), explaining how to achieve business goals using the full potential of the solution.

Her professional interests lie in technological innovations and product improvement. She is passionate about making advanced tools accessible for everyone through coherent and well-structured documentation.

Author's articles

29.06.2026

5 reasons why your business should use a CRM system + bonus

Managing clients across scattered spreadsheets, notebooks, and messengers works - until it doesn't. As your business grows, so does the risk of losing leads, missing follow-ups, and delivering inconsistent service. A CRM system solves all of this in one place. In this article, we break down 5 practical reasons why businesses of every size are making the switch to CRM, and why you should too.

19.03.2026

REST API for telephony: how to launch communication in your app in just a few days

Easily integrate telephony into your app or CRM. With Zadarma’s REST API, you can automate calls, SMS, and voice workflows, track call data, and even implement AI agents. Get full control of your communications in just a few days.

4.11.2025

6 Hidden Gem Tools that can Transform Small Business Operations

Usual ads are no longer enough for growing the business. Explore a new generation of tech tools designed to simplify your workflow and improve customer experience, because that’s what drives the success now. Only reliable tools that don’t cost a fortune.

8.09.2025

Getting the most out of HubSpot with Zadarma for sales and support

Integrating top-tier CRM and Zadarma can significantly benefit support and sales departments. Learn more about the ways it can be useful for your business.

20.06.2025

Implementing a voice AI agent in PBX: examples and use cases

AI bots have long moved beyond experimental solutions — today they help companies process calls, automate routine tasks, and improve customer experience. In this article, we will explore how to connect a bot to the Zadarma virtual PBX, in which scenarios it will be especially useful, and how to get the most out of this integration.

2.04.2025

SenderID: setup, registration, and benefits

SMS is one of the most popular and time-tested communication channels with customers. Learn how to increase text message conversion rates and increase brand recognition with SenderID.

13.03.2025

Call chatbot: how to integrate an AI-powered voice bot with telephony

In the world of modern technology, AI-powered chatbots are becoming an important tool for businesses. Learn more about the capabilities of modern voice bots and how to choose the right one in this article.

11.03.2025

Multichannel data verification via API

Overview of All API Methods for Data Verification with Request Examples A detailed guide on setting up confirmation via SMS, voice call with code/instructions, and email.

16.02.2021

Authorisation with a phone call

Zadarma's new API method allows companies to verify client phone numbers via a call. This verification is much cheaper than SMS and will suit most websites and apps.

2.09.2020

Speech Recognition: What is it and how does it work?

New Speech Recognition feature is available as a part of free Cloud PBX. Now you can transform all your conversations into text format for further analysis.