Best Online Fax Services for Slack

Find and compare the best Online Fax services for Slack in 2026

Use the comparison tool below to compare the top Online Fax services for Slack on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    Notifyre Reviews
    Top Pick

    Notifyre

    Notifyre

    2¢/SMS part; 3¢/fax page (USD)
    63 Ratings
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    Notifyre is a cloud-based fax solution that enables companies to send and receive faxes via web, email, mobile application, or API, eliminating the need for a traditional fax machine or dedicated phone line. With prices starting at just 3 cents per page, users can utilize a pay-as-you-go model without any subscription obligations. Additionally, businesses can receive faxes on a dedicated number for a monthly fee of $4.90, which includes up to 200 incoming pages. All plans are compliant with HIPAA regulations and come with a complimentary Business Associate Agreement, AES 256-bit encryption for data protection, multi-factor authentication, and comprehensive audit trails. Notifyre holds ISO 27001 certification and boasts a remarkable 99.99% uptime SLA. Users can send broadcast faxes to over 20,000 recipients, schedule deliveries, and easily port their existing fax numbers at no cost. The service supports sending faxes directly from Gmail or Outlook through its email-to-fax feature, or by integrating with a REST API. With an impressive rating of 4.7 out of 5 from 1,187 users, Notifyre offers live chat and phone assistance from a dedicated U.S.-based team, along with a proactive account manager. Unlike traditional subscription models, Notifyre has no long-term contracts, hidden charges, or unnecessary monthly page limits.
  • 2
    Zoom Phone Reviews
    Top Pick

    Zoom Phone

    Zoom Communications

    $10.50/user/month
    2,944 Ratings
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    Zoom Phone is a cloud-based VoIP phone system designed to help businesses manage voice communications, employee collaboration, and customer calls. The platform combines business calling, SMS messaging, voicemail, video conferencing, and team chat within the Zoom Workplace environment. Users can make and receive calls through desktop applications, mobile devices, web-connected systems, and supported physical desk phones. Its call management capabilities include multi-level auto attendants, call queues, call transfers, forwarding, shared lines, and customizable business hours. Built-in AI features generate call summaries, identify action items, prioritize voicemails, and provide contextual assistance during conversations. Zoom Virtual Agent Receptionist adds conversational AI capabilities for answering business questions, booking appointments, and routing callers based on their needs. Call monitoring and reporting tools provide visibility into call volumes, usage patterns, connection quality, and employee communication activity. Zoom Phone integrates with Salesforce, Microsoft Teams, Google Workspace, and other business applications to connect calling activities with existing workflows. Its centralized administration tools support phone number management, device provisioning, user permissions, call recording policies, and communication security across distributed organizations.
  • 3
    net2phone Reviews

    net2phone

    net2phone

    $19.99/month/user
    197 Ratings
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    net2phone Unite provides an online fax solution complete with dedicated fax numbers, enabling your team to send and receive faxes through the same cloud platform utilized for voice calls, video conferencing, and messaging. This eliminates the need for traditional fax machines, analog lines, or separate fax services. With SOC 2 Type II certification and HIPAA compliance, teams in healthcare, legal, and finance sectors can manage sensitive documents securely. The fax service is supported by a robust carrier-grade network that ensures a 99.98% uptime SLA and includes 24/7 in-house support.
  • 4
    ClickSend Reviews
    Top Pick

    ClickSend

    ClickSend

    $20 minimum topup
    73 Ratings
    ClickSend: A simple, battle-tested SMS API built for developers. Ship messaging features in minutes with a clean API, reliable infrastructure and zero lock-ins. Why devs and sysadmins trust us: - Direct carrier routes to 190+ countries — no middleman - 99.95%+ uptime, low latency, high throughput - Billions of messages delivered globally - Pay-as-you-go pricing — no contracts - 24/7 support from people who actually understand APIs Works the way you code: Integrate via REST API, use pre-built SDKs (PHP, Python, Ruby, Node.js, C#), or trigger via webhooks. Already using Zapier, Make, or Power Automate? We've got you covered with pre-built integrations ready to go. It works straight out of the box — and keeps working when you scale from 100 to 100 million messages. No lock-ins. No fuss. Just reliable SMS infrastructure you can trust. Perfect for: 2FA, alerts, monitoring notifications, transactional messaging, user onboarding flows and anything else that needs to reach people fast.
  • 5
    Fax.Plus Reviews

    Fax.Plus

    Alohi

    $6.99 per month
    4 Ratings
    Fax.Plus, an online fax service, is secure and reliable. It allows individuals, small and medium-sized businesses, healthcare providers, and other organizations to send and receive faxes online from their computers or mobile devices. Fax.Plus main features: * HIPAA compliant online fax service * Lack of integration * G Suite integration * All faxes sent and received are stored in an encrypted archive for future reference. * Cross Platform (Available on Web, Android, and iOS) * Provides toll-free Fax Numbers * Coverage worldwide
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