Communications & messaging
785 APIs for SMS, voice, video calls, chat, notifications, or social communication.
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301 APIs added in the last 30 days.
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785- BI534 operations131 revisionsBird API@messagebird/bird-api
Email, SMS, WhatsApp and voice messaging: send messages, manage contacts, templates and analytics
- CO13 operations368 revisionsConversations Custom Channels@hubspot/conversations-custom-channels
Custom channels: create and manage messaging channels, their accounts, and published messages
- XQ223 operations529 revisionsXquik API@xquik-dev/xquik-api
Read and write X (Twitter) data: search posts, look up users, manage monitors and webhooks
- PR336 operations64 revisionsPrimitive API@primitive/primitive-api
Email infrastructure: send and receive email, manage domains, webhooks, filters and threads
- KN118 operations92 revisionsKnock API@knocklabs/knock-api
Notifications: trigger workflows, manage users, subscriptions, preferences, audiences and channel data
- TR323 operations76 revisionsTrytrata API@trytrata/trytrata-api
Voice agents, recordings, calls and notifications: manage rooms, call requests, transcripts, leads and webhooks
- PH333 operations645 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- TE1,552 operations1,035 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- DI1,251 operations212 revisionsDialogBrain v2 API Gateway@dialogbrain/dialogbrain-v2-api-gateway
Inbox, channels, AI agents, workspace integrations and files for a multi-channel messaging platform
- HE217 operations2 revisionsHelios API@usehelios/helios-api
Campaigns: run voice, SMS and WhatsApp outreach, manage agents, calls and conversations
- AD76 operations7 revisionsAdeli API@adeli/adeli-api
Social posting, comments, DMs and analytics across networks via one API key
- VO44 operations61 revisionsVoice Logica API@voicelogica/voice-logica-api
Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks
- AD80 operations27 revisionsAdaptlyPost Public API@adaptlypost/adaptlypost-public-api
Social media: schedule posts across 14 platforms, read comments, DMs and reviews, get analytics
- FO76 operations9 revisionsForward Email API@forwardemail/forward-email-api
Email: manage domains, aliases, forwarding, outbound SMTP sends, contacts, calendars and messages
- SA385 operations38 revisionsSamva API@samva/samva-api
Email and WhatsApp messaging: send messages, manage contacts, conversations, campaigns and journeys
- WH92 operations7 revisionsWhatSync API@whatsync/whatsync-api
WhatsApp messaging: read, search and send messages, manage groups, templates, campaigns and webhooks
- CA15 operations10 revisionsCallForMe API@callforme/callforme-api
Phone calls: have an agent call businesses, track calls, and check account balance
- TR6 operations243 revisionsTransactional Single Send@hubspot/marketing-transactional-single-send
Email: send single transactional emails and manage SMTP API tokens and passwords
- SH238 operations41 revisionsshipmail API@shipmail/shipmail-api
Email, calendar and booking: send messages, manage mailboxes, domains, newsletters and scheduling pages
- SP188 operations6 revisionsSpeak AI API@speakai/speak-ai-api
Transcription and insights for audio and video, plus voice agents, folders, labels and exports
- LE39 operations2 revisionsleexi-public-api@leexi/leexi-public-api
Meetings and calls: manage calls, call notes, meeting events, teams, users and client companies
- 3G42 operations12 revisions3GPP Scout API@3gppscout/3gpp-scout-api
Telecom standards: search 3GPP specs, TDocs, meetings, decisions, RFCs and proposals
- X260 operations45 revisionsX API v2@x/x-api-v2
Posts, DMs, lists, communities and live broadcasts: read and publish X content, manage bots and notes
- PO15 operations2 revisionsPostfleet API@postfleet/postfleet-api
Email API: send and screen messages, manage mailboxes, drafts, and custom sending domains
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