Open Whisper Systems' libsignal for Node.js

The fleet's thin Resend send primitive — one dependency-free way to send transactional mail (raw REST, runs in Node/Bun/edge), with a dev kill-switch + recipient allowlist so test sends never reach real users and a typed {ok,id?,error?} return that never

Sends telegrams to a list of NationStates nations defined using a powerful query language called Telegram Recipient Language

A small, type-safe notification engine for NestJS in the spirit of Laravel notifications: pluggable channels, per-recipient preference filtering, background and after-commit delivery, generic over your own channel and preference-group types.

MCP server for sending proactive Zalo Bot notifications (sendMessage/sendPhoto/sendChatAction) with saved recipient aliases. Token stays in the server env.

JavaScript SDK for Mangopay integration - embed recipient forms and other components

MCP server exposing NOSTR protocol primitives (sign, publish, query, NIP-19 encode/decode, NIP-05 lookup, encrypted DMs) to LLM agents. Defense-in-depth safety: kind allowlist, DM recipient allowlist, rate limits, audit log. Supports both nsec and NIP-46

Javascript SDK for the UK Government Fuel Finder Recipient Service.

Server-side: JWT auth, userinfo discovery, envelope + recipient view

Subject-polymorphic payout-recipient engine — verified payout methods (mobile money / bank transfer) + KYC status + an assertPayable eligibility gate. KYC execution is bring-your-own via a ComplianceBridge. Consumed by @classytic/revenue (settlement) an

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Sends out an email to the given recipient with information about an uncaught exception.

Send, sign, track, and manage electronic signature agreements. Upload documents as transient files, create agreements with sequential or parallel signing workflows, and configure recipient roles (signer, approver, acceptor, form filler, delegator). Create

MCP server for the Madhouse Wallet payout API — quote, transfer, and recipient management via Claude or any MCP-compatible client.

adds recipient avatars via `message.meta` to show recipients to a private message/thread

Proxy without notifying recipient about sender.

TypeScript client for pact-network-v1-pinocchio (PDA derivers, account decoders, instruction builders, fee-recipient helpers).

Node.js client to check organization number in ELMA (Norway's electronic recipient address registry)

Send and receive email from odla apps and agents — structured messages for Cloudflare Email Service's modern send() API (multi-recipient, cc/bcc, attachments, messageId receipts), invite/onboarding rendering, inbound parsing with DMARC verification, and t

A messaging / communications service. Delivers a `Message` to a `Recipient` over a `CommsChannel` (email today; SMS / Slack / WhatsApp / push later), with deliverability concerns (suppression, audit log) handled centrally. Consumed as a library/service by