Best Free Messaging Tools

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

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

[NATS.io](https://nats.io) as a service — The Personal Plan is $0/month and includes 2 Accounts, 10 Connections, 2 Leaf Nodes, 1 MiB Message Size, 10 GiB Network Data, and 5 GiB Storage. Best for personal projects. Note — discovered 2026-09-13: The free tier now has limits of 2 Accounts, 10 Connections, 2 Leaf Nodes, 1 MiB Message Size, 10 GiB Network Data, and 5 GiB Storage. Previously 50 active connections and 5GB of data per month. Source ↗

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.

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

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

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

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.

Webhook service for sending (Dispatch), receiving (Ingest) and data streaming (Stream). The Free plan is $0 with no credit card: up to 50,000 messages a month, 50 messages a second, 7-day payload retention and the embeddable webhooks UI. Basic, from $20 a month, adds a 99.9% uptime SLA, 200 messages a second and 30-day retention, the Free plan's terms until September 2026, and bills messages beyond 50,000 a month. Note — discovered 2026-09-27: Svix cut its Free plan from 200 to 50 messages a second and from 30-day to 7-day payload retention, and moved the 99.9% uptime SLA to a new Basic plan from $20 a month. Free's 50,000 messages a month, beyond which messages were billed, now reads "Up to 50k messages per month". The pricing page changed between the Internet Archive's 2026-09-14 capture and our read on 2026-09-27. Source ↗

Push notification platform — Free $0/mo. Access to: All channels, Basic automation & analytics, OneSignal AI & MCP, Basic personalization. Mobile Push Notifications for organizations with up to 1,000 monthly active users. Web Push Notifications Max 10,000 subscribers per send. Email 10,000 sends / month. Best for personal projects. Note — discovered 2026-09-25: The free tier now has limits on monthly active users for mobile push notifications (up to 1,000) and web push notifications (max 10,000 subscribers per send). Email sends are limited to 10,000/month. Source ↗

Superseded: As of 2026-09-09, cloudamqp.com/plans.html reads: Little Lemur - For Development Max 100 queues Max 10 000 queued messages Max idle queue time 28 days Shared RabbitMQ broker 1 M Message quota/month 20 Connection limit FREE. We are not publishing our stored CloudAMQP terms beside it — our own pricing change record, discovered 2026-09-09, names them as the previous ones. Read what we recorded ↓

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. The page we cite for ElasticMQ names a plan but states no amount, so these limits come from our own record rather than from that page.

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.

Real-time messaging — 200K messages/day, 100 concurrent connections free

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.

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

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).

Message queues on Workers — Cloudflare Queues charges for the total number of operations against each of your queues during a given month. An operation is counted for each 64 KB of data that is written, read, or deleted. Workers Free includes 10,000 operations/day. Workers Paid includes 1,000,000 operations/month + $0.40/million operations. Message retention is 24 hours (non-configurable) on the free tier and 4 days default, configurable up to 14 days on the paid tier.

Send and receive text messages using your Android phone as an SMS Gateway. Free to send and receive up to 200 messages per month. When we last read the page we cite for this offer, on 2026-09-14, we found a change we could not reconcile with the terms we publish, so we cannot confirm these terms today.