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VaxVoIP Android SIP Phone SDK by VaxSoft is a comprehensive software development kit that helps developers create, customize, and distribute SIP based VoIP softphones for Android platforms. It provides all the essential tools to integrate Session Initiation Protocol functionality into mobile applications, supported by straightforward sample code and a fully customizable user interface. The SDK allows developers to build high performance communication solutions that reflect their brand identity and meet specific technical requirements.
With its SIP integration and flexible design options, the VaxVoIP Android SIP Phone SDK improves VoIP app development and shortens time to market. Developers can create tailored softphones for businesses, call centers, or service providers, delivering secure, reliable, and high quality voice communication. Whether used to build branded enterprise communication tools, customer support applications, or specialized telephony systems, the SDK provides the scalability, control, and performance needed to power VoIP experiences on Android devices.
VaxVoIP Android SIP Phone SDK is licensed per product, per year, under a single software brand license that permits use for one application with limited distribution rights. Developers may distribute compiled applications to end users but cannot redistribute the SDK or source code, and all software must operate with the license holder’s own SIP server or service. See our VaxVoIP Android SIP Phone SDK licensing page for full details.
For more information, visit our VaxVoIP Android SIP Phone SDK product page.

IMAP support enables applications to interact with mail servers using the Internet Message Access Protocol, allowing messages to be retrieved, searched, and managed directly on the server. This protocol maintains synchronization between the client and the server, preserving message state across multiple devices. For developers, integrating IMAP provides a consistent way to access and manipulate email data without requiring full message downloads, reducing local storage needs and improving responsiveness in applications that handle email communication.
Several .NET Comms & Messaging components offer IMAP support including:
For an in-depth analysis of features and price, visit our comparison of .NET Comms & Messaging.

Clever Internet Suite is a comprehensive toolkit of more than fifty VCL components designed for Delphi and C++Builder developers to build full-featured internet applications. It provides native support for protocols such as HTTP, FTP, SMTP, POP3, IMAP, SFTP (SSH), WebDAV, and DNS, along with built-in SSL/TLS/SSH security, certificate management, OAuth 2.0 authorization, and multi-threaded server-client structures. The product is designed for rapid development and simplifies tasks such as file transfer, secure communication, email and web services, enabling developers to add advanced internet functionality without needing to assemble disparate libraries or implement low-level networking code.
The Clever Internet Suite for Delphi, C++Builder V12.0 release adds support for Embarcadero RAD Studio 13 Florence ensuring compatibility with the latest Delphi and C++Builder toolchains, IDE enhancements, and 64-bit build environments. This enables access to new platform features, such as improved compiler performance, updated VCL and FMX frameworks, enhanced debugging and productivity tools, while leveraging the internet components in modern architectures.
To see a full list of what's new in V12.0, see our release notes.
Clever Internet Suite for Delphi, C++Builder is licensed per developer and is available as a perpetual license with one year of updates. Update licenses are available to extend the update period for a further year. See our Clever Internet Suite for Delphi, C++Builder licensing page for full details.
Clever Internet Suite for Delphi, C++Builder is available individually or as part of the following products:

VaxVoIP SIP Server SDK by VaxSoft is a comprehensive software development kit designed for building secure, high-performance VoIP communication systems. It provides all the core functionality needed to develop SIP-based servers, IP-PBX systems, IVRs, auto-dialers, and call center solutions. The SDK supports real-time audio access, making it suitable for advanced integrations such as AI-driven voice agents, speech analytics, and automated call handling. With its well-documented API and scalable architecture, it enables developers to create reliable communication platforms tailored to their specific business or technical requirements.
The VaxVoIP SIP Server SDK offers significant advantages for developers seeking to reduce complexity and time-to-market when creating VoIP applications. Its built-in protection against SIP attacks enhances system security, while its scalability ensures stable performance under heavy workloads. Developers can use the SDK to deploy cloud-based or on-premises communication solutions that support voice automation, customer engagement systems, and enterprise-grade telephony services. By combining flexibility, performance, and ease of integration, it empowers teams to build modern, cost-efficient voice communication solutions.
VaxVoIP SIP Server SDK is licensed per service, per year, under a single software, single server license that allows one production deployment on one computer or server. See our VaxVoIP SIP Server SDK licensing page for full details.
For more information, visit our VaxVoIP SIP Server SDK product page.
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SMTP, or Simple Mail Transfer Protocol, is an internet protocol used for sending email messages between servers and clients. In a .NET Communication and Messaging component, SMTP provides the functionality to programmatically send email from applications. It handles the transmission of messages to email servers, typically through the System.Net.Mail namespace in .NET, allowing developers to configure sender details, recipients, message content, attachments, and server credentials. This protocol is essential for applications that generate automated notifications, password resets, or any system-generated communication, ensuring reliable delivery through standard email infrastructure.
Several .NET Communication & Messaging components offer support for SMTP including:
For an in-depth analysis of features and price, visit our comparison of .NET Communication & Messaging components.