Nylas
Communication APIs
Email, calendar, and contacts API platform for embedding communication features into applications.
Free planFree trialSOC 2ISO 27001GDPRHIPAA
Price$5+ / month
Alternatives to Kinvolved
- 1Communication APIs
- 2Communication APIs
Twilio
Communication APIs
Twilio is a cloud communications platform that provides APIs for SMS, voice, video, email, and WhatsApp messaging. It enables developers to embed communication capabilities into applications and powers the customer engagement infrastructure for over 300,000 businesses.
Free trialUsage-basedSMS MarketingDocument AuthenticationPriceUsage-based
- 3Communication APIs
ClickSend
Communication APIs
Multi-channel communication platform offering SMS, MMS, email, voice, fax, and direct mail APIs with global coverage and competitive pricing.
Free planFree trialISO 27001HIPAASOC 2Usage-based - 4Communication APIs
Janus
Communication APIs
Meetecho's open-source general-purpose WebRTC server supporting multiple use cases like SFU, MCU, and gateway.
Free planTeam MessagingOpen Source Management - 5Communication APIs
PostGrid
Communication APIs
PostGrid automates direct mail with address verification, template customization, and mail tracking APIs, integrating with CRMs and business platforms for automated workflows.
HIPAASOC 2GDPRPCI DSSUsage-basedWorkflow AutomationPriceUsage-based
- 6Communication APIs
Socket.IO
Communication APIs
Library enabling real-time bidirectional event-based communication between browser clients and servers with fallback support.
Free planBackend-as-a-ServiceEvent-Driven Architecture - 7Communication APIs
D7 Networks
Communication APIs
Enterprise cloud communication platform offering SMS, voice, and verification APIs across global networks.
Free planFree trialISO 27001Usage-basedCPaaS (Communications Platform as a Service)WhatsApp MarketingPriceUsage-based
- 8Communication APIs
Daily
Communication APIs
Daily is a WebRTC-based video and audio API platform for developers building real-time communication features into applications.
Voice AI agent deployment and orchestrationSip and pstn telephony integrationMulti provider AI service integrationPriceUsage-based
- 9Communication APIs
Dolby.io
Communication APIs
APIs from Dolby for video, voice, streaming, and media processing with high-fidelity audio enhancement.
Developer Experience PlatformsMedia and Entertainment Software - 10Communication APIs
Smore Newsletters
Communication APIs
Digital newsletter platform for K-12 educators with templates, analytics, and translation.
Drag and drop newsletter editorNewsletter templates libraryAutomatic translationPrice$8+ / month
