Free SMS Application for Android Bulk Sends
FlixySMS turns any Android phone into a free SMS application for bulk campaigns, two-way replies, and scheduled sends while using your existing carrier plan instead of per-message fees.

TL;DR
FlixySMS is a free SMS application that converts an Android handset into a self-hosted gateway. Install the app, connect your account, and send bulk messages through your carrier plan. Rates reach 30-100 SMS per minute per device. Integrations with Shopify, WooCommerce, and Google Sheets are native. Two-way auto-responders handle STOP and HELP keywords automatically. Pricing starts free and scales by quota rather than per-message cost.
FlixySMS gives you a free SMS application that runs on any Android phone and handles bulk campaigns without carrier-based per-message charges. You install the app, connect it to your account, and start sending from your own device.
Getting Started on Android
Download the FlixySMS app from the Play Store. Sign up at the Dashboard to receive your API key. Open the app, enter the key, and grant SMS permissions. The phone now acts as the gateway.
Test a single message first. Send to your own number to confirm delivery. The app shows status in real time so you know the carrier accepted the message.
Send Rates and Multi-Device Setups
A single modern Android handset sends 30 to 100 SMS per minute depending on the carrier. Add a second phone and the system distributes load across both. Three phones running in parallel reach several hundred messages per minute while staying under most carrier throttling limits.
Multi-segment messages longer than 160 characters split automatically. The app adds concatenation headers so the recipient sees one clean text. A 300-character order update uses two segments but counts as one logical message on the delivery report.
Integrations That Save Time
Connect FlixySMS to Shopify for order confirmations and abandoned-cart reminders. WooCommerce sends order events the moment payment succeeds. Google Sheets lets you import a contact list and trigger a campaign from a single row. Custom webhooks push data from any internal system you already run.
See the full list on the API Documentation page. Each integration uses the same REST endpoint so you write one piece of code and reuse it.
Two-Way Conversations and Auto-Responders
Inbound messages trigger rules you define once. A customer texting STOP receives an instant confirmation and is removed from future sends. Texting HELP returns your support number. You can also build short chatbot flows that ask for a zip code and reply with local store hours.
All replies stay inside the same thread so your team sees context without switching apps. The FAQ section lists common keyword setups.
Cost Comparison with Carrier APIs
Traditional services charge between $0.0075 and $0.05 per message. FlixySMS uses the SMS allowance already included in your phone plan. After the flat monthly subscription you pay only what your carrier bills, which is often zero for unlimited plans. Check current quotas on the Pricing page before you scale.
| Plan | Monthly SMS Quota | Devices Allowed | API Access | \ Price |
|---|---|---|---|---|
| Free | 500 | 1 | Read only | $0 |
| Pro | 10,000 | 3 | Full | $19 |
| Business | 50,000 | 10 | Full | $49 |
| Enterprise | Custom | Unlimited | Full | Quote |
Scheduling and Delivery Tracking
Schedule a campaign for 8 a.m. local time on a Tuesday. The app queues the messages and sends them when the time arrives even if your computer is off. Delivery reports arrive within seconds and appear in the dashboard with timestamps and carrier codes.
Export the report as CSV for your own records. Filter by failed deliveries to clean your list before the next send.
Security and Compliance Notes
Store the API key only on the phones you control. Rotate keys every 90 days from the dashboard. Always include an opt-out instruction in the first message of any new campaign. The app logs every STOP request so you stay within carrier and legal guidelines.
Moving from Carrier APIs to FlixySMS
Teams that previously paid $200 a month for 20,000 messages now run the same volume on a Pro plan plus their existing phone plan. Setup takes under thirty minutes on a single device. Add phones only when daily volume exceeds 5,000 messages.
Read the step-by-step guide on the How it Works page. The same dashboard controls both SMS and the separate WhatsApp product at flixywtsp.com when you need richer media later.
Start with the free tier to test your first 500 messages. Once you see consistent delivery, move to a paid plan for higher quotas and more devices. The Contact page has answers if you run into carrier-specific settings.
Frequently Asked Questions
Is FlixySMS really free to use?+
The free plan allows 500 messages per month on one device. Paid plans increase the quota and add more devices and full API access.
How many messages can one Android phone send?+
Most carriers allow 30 to 100 SMS per minute. Multi-device setups distribute the load and raise total throughput.
Does FlixySMS support messages longer than 160 characters?+
Yes. The app splits long texts into multiple segments and adds concatenation headers so the recipient sees a single message.
Can I connect FlixySMS to my Shopify store?+
Yes. The Shopify integration sends order confirmations and abandoned-cart messages automatically through the same REST API.
What happens when a customer replies STOP?+
An auto-responder removes the number from active lists and sends a confirmation. All stops are logged for compliance.