--- title: "Communications & messaging" description: "610 APIs for SMS, voice, video calls, chat, notifications, or social communication." --- # Communications & messaging 610 APIs for SMS, voice, video calls, chat, notifications, or social communication. ## APIs Public APIs in the catalog, one page at a time. 610 in all. Each links to its markdown overview. - [SMTPfast API](https://skmtc.dev/smtpfa/apis/smtpfast-api.md) (`smtpfa/smtpfast-api`): Transactional email: send messages, manage sending domains, webhooks, contacts and analytics 161 operations. - [CommsHarbor](https://skmtc.dev/commsharbor/apis/commsharbor.md) (`commsharbor/commsharbor`): Domain email: check SPF, DKIM, DMARC and MX records, manage mailboxes and aliases 100 operations. - [HUDL API](https://skmtc.dev/meet-align/apis/hudl-api.md) (`meet-align/hudl-api`): Video meetings: manage rooms, recaps, transcripts, clips, polls and notetaker bots 650 operations. - [Netify Reseller Programme for BT Business Broadband, Agent API](https://skmtc.dev/netify/apis/netify-reseller-programme-for-bt-business-broadband-agent-ap.md) (`netify/netify-reseller-programme-for-bt-business-broadband-agent-ap`): Reseller routes for BT and O2 broadband, SD-WAN/SASE and MPLS research, pricing and commission estimates 86 operations. - [VoIPBin API](https://skmtc.dev/voipbin/apis/voipbin-api.md) (`voipbin/voipbin-api`): Telephony: place and record calls, run conferences, manage agents, numbers and SMS-style conversations 444 operations. - [Phoenix API by Phone.com](https://skmtc.dev/phone/apis/phoenix-api-by-phone-com.md) (`phone/phoenix-api-by-phone-com`): Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs 333 operations. - [Cooper Email API](https://skmtc.dev/cooperemail/apis/cooper-email-api.md) (`cooperemail/cooper-email-api`): Email: create inboxes, send and search messages, manage threads, webhooks and domains 189 operations. - [HonkIO API](https://skmtc.dev/honkio/apis/honkio-api.md) (`honkio/honkio-api`): Canadian SMS messaging: send texts, provision numbers, manage CASL consent and opt-outs 191 operations. - [Hive Developer API](https://skmtc.dev/hivepublish/apis/hive-developer-api.md) (`hivepublish/hive-developer-api`): Social media automation: DMs, multi-network publishing, unified inbox, contacts and analytics 282 operations. - [Stream API](https://skmtc.dev/getstream/apis/stream-api.md) (`getstream/stream-api`): Chat: channels, messages, members, moderation blocklists and campaigns 209 operations. - [Conversations Custom Channels](https://skmtc.dev/hubspot/apis/conversations-custom-channels.md) (`hubspot/conversations-custom-channels`): Custom channels: create and manage messaging channels, their accounts, and published messages 13 operations. - [Transactional Single Send](https://skmtc.dev/hubspot/apis/marketing-transactional-single-send.md) (`hubspot/marketing-transactional-single-send`): Email: send single transactional messages and manage SMTP API tokens and passwords 6 operations. - [Conversations Inbox & Messages](https://skmtc.dev/hubspot/apis/conversations-conversations.md) (`hubspot/conversations-conversations`): Inboxes: read and update threads, messages, assignees and channel accounts across chat channels 18 operations. - [Recall.ai API](https://skmtc.dev/recall/apis/recall-ai-api.md) (`recall/recall-ai-api`): Meetings: create bots to record, transcribe and fetch audio, video, participants and calendar events 111 operations. - [Voice Logica API](https://skmtc.dev/voicelogica/apis/voice-logica-api.md) (`voicelogica/voice-logica-api`): Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks 44 operations. - [SendSeven](https://skmtc.dev/sendseven/apis/sendseven.md) (`sendseven/sendseven`): Messaging: send and manage WhatsApp, SMS and email campaigns, conversations and contacts 890 operations. - [ToneWow Database API](https://skmtc.dev/tonewow/apis/tonewow-database-api.md) (`tonewow/tonewow-database-api`): Backend for ToneWow: push notifications, banners, inbox, device tokens and payment processing 132 operations. - [SMS API](https://skmtc.dev/apideck-libraries/apis/sms-api.md) (`apideck-libraries/sms-api`): SMS: send, list, update and delete text messages and their delivery status 5 operations. - [SalesMessage Public API](https://skmtc.dev/salesmessage/apis/salesmessage-public-api.md) (`salesmessage/salesmessage-public-api`): Messaging: send and receive SMS, manage contacts, tags, teams and conversations 417 operations. - [Trytrata API](https://skmtc.dev/trytrata/apis/fastapi.md) (`trytrata/fastapi`): Calls, recordings, rooms and notifications: manage voice call rooms, recordings, leads and transcripts 320 operations. - [VoiceBlender API](https://skmtc.dev/voiceblender/apis/voiceblender-api.md) (`voiceblender/voiceblender-api`): Voice calls: bridge SIP and WebRTC legs into rooms, manage trunks and registrations, stream events 112 operations. - [Liara Mail API Documentaion](https://skmtc.dev/liara-cloud/apis/liara-mail-api-documentaion.md) (`liara-cloud/liara-mail-api-documentaion`): Mail delivery: send and receive email, manage accounts, SMTP credentials, inbound rules and forwarding 40 operations. - [WAHA - WhatsApp HTTP API](https://skmtc.dev/devlike/apis/waha-whatsapp-http-api.md) (`devlike/waha-whatsapp-http-api`): WhatsApp messaging: send texts, manage sessions, chats, groups, channels and contacts 196 operations. - [Provisioning API](https://skmtc.dev/sinch/apis/provisioning-api.md) (`sinch/provisioning-api`): Messaging channels: manage WhatsApp, KakaoTalk and RCS senders, templates, webhooks and bundles 91 operations. [Next page](https://skmtc.dev/explore/communications-messaging.md?cursor=1793613857.api_3d992bdc3f4a4dfc8edd3a14d345e8d4) ## Categories - [AI & machine learning](https://skmtc.dev/explore/ai-machine-learning.md) - [Developer tools](https://skmtc.dev/explore/developer-tools.md) - [Cloud & infrastructure](https://skmtc.dev/explore/cloud-infrastructure.md) - [Security & identity](https://skmtc.dev/explore/security-identity.md) - [Data & analytics](https://skmtc.dev/explore/data-analytics.md) - [IoT & devices](https://skmtc.dev/explore/iot-devices.md) - [Payments & finance](https://skmtc.dev/explore/payments-finance.md) - [Communications & messaging](https://skmtc.dev/explore/communications-messaging.md) - [Productivity & collaboration](https://skmtc.dev/explore/productivity-collaboration.md) - [Commerce & retail](https://skmtc.dev/explore/commerce-retail.md) - [Marketing & advertising](https://skmtc.dev/explore/marketing-advertising.md) - [Sales & customer support](https://skmtc.dev/explore/sales-customer-support.md) - [Business operations & HR](https://skmtc.dev/explore/business-operations-hr.md) - [Media & content](https://skmtc.dev/explore/media-content.md) - [Maps & location](https://skmtc.dev/explore/maps-location.md) - [Travel & logistics](https://skmtc.dev/explore/travel-transport-logistics.md) - [Healthcare & life sciences](https://skmtc.dev/explore/healthcare-life-sciences.md) - [Government & public data](https://skmtc.dev/explore/government-public-data.md) - [Education & research](https://skmtc.dev/explore/education-research.md) --- AI agents can search the catalog, no sign-in:\ `curl -s 'https://api.skmtc.dev/v1/search?q={query}&type={account,api,generator}'`\ or over [MCP](https://docs.skmtc.dev/docs/mcp) at [https://mcp.skmtc.dev/mcp](https://mcp.skmtc.dev/mcp), or read [llms.txt](https://skmtc.dev/llms.txt)