Email & communication

HEY is an email and calendar service that rethinks traditional email by giving users control over who can email them and organizing emails into purpose-built boxes. It includes strong privacy protections, an integrated calendar, and workflows to manage emails efficiently.

Kontacts.dev is an all-in-one workspace that provides project-owned email inboxes, booking pages, contact forms, public boards, and mailing lists. It enables quick setup of landing pages, email, booking, and contact forms within minutes, supporting team collaboration with shared project inboxes and API integration.

LetterToLater is a service that allows users to schedule emails, voice memos, and file attachments to be delivered in the future with bank-level encryption and complete privacy. It enables sending letters to oneself or loved ones as a digital time capsule or for special occasions.

LoveWritten.ca offers a service to write and schedule heartfelt digital letters to be delivered by email at a chosen future date and time. The service does not require an account and emphasizes privacy, security, and a personalized interactive letter-opening experience.

Exchange ActiveSync support for mobile synchronization. Integrated real-time chat, file sharing, video and audio chat capabilities in version 10.

Mailofly is a developer-first email delivery platform designed for transactional and marketing emails. It offers fast API delivery, high inbox placement rates, and scalable infrastructure with features like dynamic templates, real-time email validation, and AI integrations.

Make A Hug is a web-based service that allows users to create private digital care packages containing notes, photos, voice messages, songs, drawings, and links. Users can preview the package and share it via a single private link without needing an account or app.

Team messaging with channels, direct messages, calls, file sharing, reminders, decisions,

Mobayilo is a browser-based international calling service that allows users to call landlines and mobiles worldwide without downloading apps or contracts. It offers reliable outbound international calls with transparent pay-as-you-go pricing and no hidden fees.

Molted Email is an email infrastructure platform designed specifically for AI agents, providing each agent with its own email address and inbox. It screens inbound emails for prompt injection and enforces sending policies to prevent agents from making mistakes in customer communications.

Notifier is a software platform that enables sending SMS appointment reminders quickly to save time, reduce no-shows, and retain clients.

Omnitronics provides mission-critical radio dispatch systems, Radio over IP (RoIP) gateways, and interoperability solutions that connect multiple radio networks across vendors and protocols. Their products operate 24/7 in control centers worldwide and are customizable to unique client needs.

OX is a carrier-grade alternative to Gmail and Outlook, providing secure, sovereign email and productivity apps with full control over data, cost, and platform risk. It is designed specifically for service providers and public-sector organizations, delivering a modern, intuitive email, calendar, and collaboration experience enhanced with integrated AI features.

Papertunnel is an online service that allows sending documents by fax or physical mail without requiring a subscription or fax machine. It supports pay-per-fax pricing with delivery tracking and secure upload of PDFs for US, Canada, and UK fax numbers.

Calling hotels, clinics, or relatives abroad quickly without needing a SIM or app. Call landlines and mobiles in 218 countries from a browser with pay-per-second billing. Get a US or Canada phone number to call from, forward calls, and read texts in the browser for $3.95 per month.

PingRoom is a short-form communication platform that enables quick updates, questions, and answers among people, apps, and AI through rooms. It supports iPhone, Android, and web access, allowing users to send Pings that notify everyone in a room instantly.

Postage.to is a platform that allows users to send physical letters worldwide directly from their computer by uploading documents or writing letters online. It handles printing, stamping, and mailing with delivery in 1-5 days to over 190 countries without requiring a printer or post office visit.

Posthawk is an open-source email platform designed for developers to send transactional and marketing emails, schedule deliveries, manage templates, and handle inbound email through a simple REST API. It supports both managed cloud and self-hosted deployments, providing a complete email infrastructure with features like high deliverability, bounce handling, and multi-region support.