Flat-Rate Bulk SMS Software That Uses Your Own SIM Cards
Import contact lists from Excel or CSV, personalize messages with dynamic custom fields, schedule automated broadcasts, and send thousands of marketing texts through your own mobile gateways without paying third-party aggregator markups.
Excel & CSV Import · Dynamic Merge Tags · Smart Throttling Delays · Automated Opt-Outs
Everything You Need for High-Impact Mass Messaging
Designed for local retailers, clinics, real estate agencies, e-commerce stores, and marketing teams.
📁 Excel & CSV Spreadsheet Import
Upload spreadsheets with thousands of rows in seconds. Map columns like Name, City, Order Number, or VIP Tier to custom merge tags.
🏷️ Dynamic Personalization Tags
Personalize every text with merge variables: Hi {name}, your discount code {code} expires tonight! to boost engagement.
⏱️ Smart Random Interval Throttling
Configure realistic delay intervals between outbound messages (e.g. 3 to 10 seconds) to prevent carrier spam detection and maintain sender trust.
📅 Campaign Scheduling
Draft broadcasts in advance and schedule them to fire automatically at the optimal time for customer engagement and local quiet hours.
🛑 Automated STOP Opt-Out Filtering
Maintain 100% regulatory compliance. When recipients reply with "STOP", SharkSMS automatically flags their number to exclude them from future blasts.
📊 Real-Time Analytics & DLR Tracking
Track overall campaign progress, delivery success rates, and individual recipient carrier response timestamps in an interactive dashboard.
How Much Will Your Business Save?
Comparing flat monthly software costs with traditional metered SMS aggregator rates.
Frequently Asked Questions · Bulk SMS Software
Can I import contacts from Excel or Google Sheets?
Yes. You can upload `.xlsx`, `.xls`, or `.csv` files directly from the dashboard and map phone numbers and personalization columns with point-and-click ease.
How do I prevent my SIM card from getting blocked by carriers?
SharkSMS includes intelligent random delay controls (e.g. 5–15 seconds between texts) and dual-SIM rotation to distribute campaign volume realistically across your mobile operator lines.
Can I send bulk WhatsApp messages with this software too?
Yes. You can broadcast text, images, brochures, and promotional announcements to WhatsApp contact groups using your linked WhatsApp number.
Is there a setup fee or contract?
No. SharkSMS operates on transparent month-to-month plans with no long-term contracts, no cancellation penalties, and no per-SMS surprise bills.
Launch your first bulk SMS campaign today
Upload your contact list, connect your phone, and start engaging customers directly.