Customer messages that cut through the noise
Your CRM sends emails customers never open. Follow-ups land in promo tabs. Renewal reminders get buried under 47 other unread messages. Blasts adds a consent-based notification channel your contacts opted into — so deal-critical messages actually get seen.
The CRM deliverability problem
Built for customer lifecycle
Deal Stage Alerts
"Your proposal for Acme Corp is ready for review." Move deals forward with notifications prospects actually see.
Renewal Reminders
30/60/90-day renewal reminders with contract details and one-click renewal links. Stop losing revenue to inbox blindness.
Onboarding Sequences
Welcome blasts, setup checklists, milestone celebrations. Guide new customers through activation with rich HTML walkthroughs.
Usage & Health Scores
"Your team used 92% of your license this month." Proactive health alerts that drive expansion conversations.
Campaign Follow-Ups
Triggered blasts after webinars, demo requests, or content downloads. Strike while the lead is hot — in a channel they monitor.
Billing & Invoice Alerts
Payment failures, invoice due dates, receipt confirmations. The transactional messages that keep cash flowing.
Rich HTML renewal reminder example
This is what a real CRM renewal blast looks like — fully formatted with merge tags from your CRM fields
# Batch renewal reminders from CRM data curl -X POST "https://api.blasts.app/api/v1/partner/messages/batch" \ -H "Authorization: Bearer $API_KEY" \ -H "X-Blasts-Timestamp: $(date +%s000)" \ -H "X-Blasts-Signature: sha256=..." \ -H "Content-Type: application/json" \ -d '{ "batch_name": "renewals_aug_2026", "body_html": "<div style=\"font-family:sans-serif\"> <div style=\"background:linear-gradient(135deg, #ec4899,#db2777);color:#fff; padding:24px;text-align:center\"> <h1>🔄 Renewal Reminder</h1> <p>Your subscription renews soon</p> </div> <div style=\"padding:24px\"> <p>Hi {{contact_name}},</p> <p>Your <strong>{{plan_name}}</strong> subscription for <strong>{{company}}</strong> renews on <strong>{{renewal_date}}</strong>.</p> <div style=\"background:#fdf2f8; border:2px solid #f9a8d4; border-radius:12px;padding:20px; text-align:center\"> <div style=\"font-size:28px; font-weight:900;color:#ec4899\"> {{renewal_price}}/yr</div> <p>{{seats}} seats · Price locked</p> </div> <a href=\"{{renewal_url}}\" style=\"background:#ec4899;color:#fff; padding:12px 32px;border-radius:8px; display:inline-block;font-weight:700; margin-top:16px\"> Renew Now →</a> </div> </div>", "body_plain": "Hi {{contact_name}}, your {{plan_name}} for {{company}} renews {{renewal_date}} at {{renewal_price}}/yr. Renew at {{renewal_url}}", "recipients": [ { "to_email": "jdoe@acmecorp.com", "merge": { "contact_name": "John Doe", "company": "Acme Corp", "plan_name": "Business Pro", "seats": "50", "renewal_date": "Aug 15, 2026", "renewal_price": "$4,990", "renewal_url": "https://cloudsync.com/renew/acme" } }, { "to_email": "mlee@globex.com", "merge": { "contact_name": "Michelle Lee", "company": "Globex Inc", "plan_name": "Enterprise", "seats": "200", "renewal_date": "Aug 22, 2026", "renewal_price": "$14,990", "renewal_url": "https://cloudsync.com/renew/globex" } } ] }' # Response: { "ok": true, "batch_id": "bat_r8n2v...", "accepted": 2, "rejected": 0 }
Why Blasts beats CRM email sequences
| CRM Email | SMS Sequences | Blasts | |
|---|---|---|---|
| Cuts through inbox noise | ✗ 21% open rate | ✓ But feels spammy | ✓ Dedicated inbox |
| Rich deal summaries | ✓ Often clipped | ✗ 160 chars | ✓ Full HTML + CTAs |
| File attachments | ✓ Proposals get filtered | ✗ No | ✓ Proposals, contracts |
| Cost per touchpoint | Low but invisible | $0.02–0.05 | Fraction of SMS |
| CRM field merge tags | ✓ Native | ✗ Limited | ✓ Any JSON field |
| Delivery confirmation | ✗ Pixel-based (unreliable) | ✗ Carrier-dependent | ✓ Webhook read receipts |
| Opt-in compliance | CAN-SPAM | TCPA regulated | ✓ Explicit consent enrollment |
Integrate in one afternoon
1. Get API Keys
Register at blasts.app. Sandbox keys (pk_test_*) let you test free — 100 sends/day, no credit card.
2. Enroll Contacts
Add the enrollment link to your app's settings or onboarding flow. One click in Chrome/Edge — no app download.
3. Wire CRM Triggers
Fire API calls from deal stage changes, renewal dates, or workflow automations. Map CRM fields directly to merge tags.
4. Track & Optimize
Webhook callbacks confirm delivery + read receipts. Know which contacts saw your renewal reminder vs. who needs a follow-up call.
More CRM examples
🤝 Deal Stage Alert — Single Send from Workflow
# Triggered when deal moves to "Proposal Sent" curl -X POST "https://api.blasts.app/api/v1/partner/messages/send" \ -d '{ "to_email": "buyer@prospect.com", "body_html": "<div style=\"font-family:sans-serif;padding:20px\"><h2 style=\"color:#ec4899\">📄 Your Proposal Is Ready</h2><p>Hi Sarah, your custom proposal for <strong>Enterprise Plan (200 seats)</strong> is ready for review.</p><p>Total: <strong style=\"font-size:1.4em;color:#059669\">$14,990/yr</strong> (25% volume discount applied)</p><a href=\"https://app.cloudsync.com/proposals/P-4521\" style=\"background:#ec4899;color:#fff;padding:12px 32px;border-radius:8px;display:inline-block;font-weight:700\">Review Proposal →</a><p style=\"margin-top:16px;font-size:13px;color:#6b7280\">Your account executive: Mike Chen · (555) 345-6789</p></div>", "body_plain": "Hi Sarah, your Enterprise Plan proposal (200 seats, $14,990/yr) is ready. Review at app.cloudsync.com/proposals/P-4521. Questions? Mike Chen (555) 345-6789", "metadata": { "deal_id": "D-4521", "stage": "proposal_sent" } }'
🚀 Onboarding Welcome — Triggered on New Customer
# Sent when CRM marks deal as "Closed Won" curl -X POST "https://api.blasts.app/api/v1/partner/messages/send" \ -d '{ "to_email": "newcustomer@acme.com", "body_html": "<div style=\"font-family:sans-serif;padding:20px\"><h2>🎉 Welcome to CloudSync Pro!</h2><p>Hi John, your team is all set. Here is your onboarding checklist:</p><ul><li>✅ Account created</li><li>⬜ Invite your team (50 seats available)</li><li>⬜ Connect your first integration</li><li>⬜ Schedule kickoff call with Sarah</li></ul><a href=\"https://app.cloudsync.com/onboarding\" style=\"background:#ec4899;color:#fff;padding:10px 24px;border-radius:6px;display:inline-block;font-weight:700\">Start Setup →</a></div>", "body_plain": "Welcome to CloudSync Pro, John! Start setup: invite team, connect integration, schedule kickoff. Go to app.cloudsync.com/onboarding" }'
💳 Payment Failed — Dunning Alert
# Triggered by billing webhook on payment failure curl -X POST "https://api.blasts.app/api/v1/partner/messages/send" \ -d '{ "to_email": "billing@acmecorp.com", "body_html": "<div style=\"font-family:sans-serif;padding:20px\"><div style=\"background:#fef2f2;border:2px solid #fca5a5;border-radius:12px;padding:16px\"><h2 style=\"color:#dc2626;margin:0 0 8px\">⚠️ Payment Failed</h2><p>We couldn't process the $4,990 charge for your Business Pro subscription. Your card ending in <strong>4242</strong> was declined.</p></div><p style=\"margin-top:16px\">Please update your payment method within 3 days to avoid service interruption.</p><a href=\"https://app.cloudsync.com/billing\" style=\"background:#dc2626;color:#fff;padding:10px 24px;border-radius:6px;display:inline-block;font-weight:700\">Update Payment →</a></div>", "body_plain": "Payment failed: $4,990 charge for Business Pro declined (card ending 4242). Update at app.cloudsync.com/billing within 3 days.", "priority": "urgent" }'
Works with your CRM stack
REST API integrates with any CRM via webhooks or workflow automation
HubSpot
Workflow actions + custom code
Salesforce
Apex triggers + Flow Builder
Pipedrive
Automations + webhooks
Zapier / Make
No-code webhook triggers
Custom CRM
Any system with HTTP calls
Add a channel contacts actually check
Get your free sandbox key and wire your first CRM blast in under an hour.