Best Free Messaging Tools

Connect your MQTT devices to the Cloud Native IoT Messaging Broker. Free to connect up to 100 devices (no credit card required) forever.

Customer messaging platform — 2 seats, 100 contacts, unlimited conversations. Website chat widget, shared inbox, desktop/mobile apps Best for unlimited usage needs.

Single API for push, in-app, email, chat, SMS, and other messaging channels with template management and other features. The free plan includes 10,000 messages/mo.

SMS Gateway for Android™ enables sending and receiving SMS messages through your devices using cloud routing. Completely free cloud service (with recommended notification for usage above 10,000 messages/day to maintain quality for all users).

Notification infrastructure — 10K workflow runs/month, 20 workflows, 2 environments, 3 team members. All channels: email, in-app, SMS, chat, push

Scalable and secure serverless MQTT broker you can get in seconds. 1M session minutes/month free forever (no credit card required).

Push notification platform — unlimited mobile push, up to 10K web push subscribers, 100 emails/day. Multi-platform: iOS, Android, web Best for unlimited usage needs.

Serverless message queue by Upstash — 1,000 messages/day, 10 active schedules, 7-day max delay, retries free

Real-time infrastructure — 6M messages/month, 200 concurrent connections, 200 channels, pub/sub + chat + spaces

Notification infrastructure — 10,000 notifications/month, 500 guide active users, unlimited workflows/broadcasts/channels/team members. All delivery channels included Best for unlimited usage needs.

[NATS.io](https://nats.io) as a service. Global, AWS, GCP, and Azure. Free forever with 4k msg size, 50 active connections, and 5GB of data per month.

Webhook delivery — 50K messages/month, 50 msg/sec throughput, 30-day payload retention, 3 team members. 99.9% SLA

Send push notifications to your iOS and Android devices. Effortlessly integrate via API or Webhooks and maintain full control over your alerts. Free plan: 50 messages per day to 1 device and 1 application.

Communication infrastructure in 5 minutes. Free tier includes: 100 SMS and calls, 3000 Emails, Push, Slack, MS Teams, WhatsApp, and more.

SuprSend is a notification infrastructure that streamlines your product notifications with an API-first approach. Create and deliver transactional, crons, and engagement notifications on multiple channels with a single notification API. In free plan you get 10,000 notifications per month, including different workflow nodes such as digests, batches, multi-channels, preferences, tenants, broadcasts and more.

All-in-one Customer Engagement and Automation Tool (email, push, SMS, product tours, banners and more) for SaaS. Free for up to 1,000 active users per month.

Message queues on Workers — 10K operations/day free (~300K/month) on the Workers Free plan, 24-hour message retention (non-configurable). The 1M operations/month allowance applies to the Workers Paid plan ($5/mo), which also unlocks configurable retention up to 14 days

Realtime messaging service. Free for up to 20 simultaneous connections and 100,000 events/day

Managed RabbitMQ — 1M messages/month, 20 connections, 100 queues free

Web Push Notifications - Free for upto 10k subscribers, unlimited push notifications, in-browser messaging Best for unlimited usage needs.

Superseded: As of 2026-09-03, cloud.google.com/pubsub/pricing reads: Every calendar month, the first 10 GiB of throughput identified as the Message Delivery Basic SKU for a billing account is free. After that, the price is $40 per TiB in all Google Cloud regions. We are not publishing our stored Google Cloud Pub/Sub terms beside it — our own pricing change record, discovered 2026-09-03, names them as the previous ones. Read what we recorded ↓ Note — discovered 2026-09-03: The Always Free tier of 10 GiB messages/month still exists, but it only applies to the Message Delivery Basic SKU. Throughput costs for BigQuery and Cloud Storage subscriptions, as well as import topics, are not free even within the first 10 GiB. Source ↗

Team chat software with 100 GB storage, unlimited users, 100 users per channel & SSO. Best for unlimited usage needs.

Send and receive text messages using your Android phone as an SMS Gateway. Free to send and receive up to 200 messages per month.

Lightweight message queue server with SQS-compatible interface. In-memory or file-backed persistence. REST and SQS query APIs. Open source (Apache-2.0). Runs as single JAR or Docker container. Ideal for local dev and testing without AWS dependencies Best for open source projects.

Swift, Kotlin, and React messaging at 1 million transactions each month. Transactions may contain multiple messages.