SMS MARKETING
SMS marketing built for serious scale.
Zefir runs SMS for high-volume ecommerce brands and marketplaces: 99% deliverability, millions of sends in minutes, and AI personalization on every message — with segmentation, A/B testing, and revenue attribution built for teams that measure everything.
1,000+ ECOMMERCE BRANDS · $530M+ ATTRIBUTED REVENUE · TCPA-COMPLIANT US MESSAGING
Trusted by leading ecommerce brands
THE INFRASTRUCTURE
Throughput and reliability, measured.
99.99%
Deliverability
99.99%
Platform uptime
10M+
SMS sent per hour at peak
BFCM
Full throughput at peak commerce volume
SMS campaigns reach the full list in minutes, not hours. Carrier-registered sender numbers, monitored delivery health, and throughput that holds on Black Friday — the same send speed on the biggest day of the year as on any other.
CAMPAIGNS
SMS campaigns, sent in minutes.
Promotions, launches, and drops delivered at carrier speed. Every campaign is tracked to revenue — sends, clicks, conversions, and orders, per message.
A real client SMS campaign example, framed as a high-volume promotional send.
Done by Zefir
Purchase history & AOV
Browsing & cart activity
Engagement & recency
Lifecycle stage
Live sync from your store
SEGMENTATION
Advanced SMS segmentation.
Target by purchase history, browsing behavior, order value, engagement, and lifecycle stage — segments sync live from your store, so audiences are current at send time.
TESTING
A/B testing on every send.
Test copy, offers, timing, and links on real traffic splits. Winners are measured in revenue per send — not clicks — and the AI carries what wins into the next send.
Done by Zefir
Copy & offer variants
Send-time testing
Revenue-per-send measurement
Automatic winner rollout
Done by Zefir
Per-customer product selection
Individually timed sends
Offer selection by history
Learning across every send
PERSONALIZATION
AI personalization at scale.
Every SMS is composed per customer: the product referenced, the timing, and the offer reflect that customer’s own history. Personalization runs at full list scale — millions of individually decided messages, not one blast.
MEASUREMENT
SMS KPIs your team actually runs on.
Revenue attribution
Every order tied to the message that drove it — visible in your own store admin, not just our dashboard.
Full-funnel metrics
Delivery, clicks, conversion, revenue per send, opt-out rate — per campaign, per flow, per segment.
Deliverability monitoring
Carrier-level delivery health tracked continuously; issues surface before they cost a send.
COMPLIANCE
Compliant in every send.
Done by Zefir
TCPA-compliant opt-in
10DLC-registered sender numbers
Quiet-hours enforcement by recipient time zone
Instant opt-out handling
FAQ
SMS marketing questions, answered.
Deliverability, throughput, segmentation, testing, measurement, and compliance for high-volume SMS teams.
Product
Setup
Support, Security & Billing
What is SMS marketing at scale?
SMS marketing at scale means sending compliant, high-volume promotional and transactional messages with reliable throughput, segmentation, testing, and revenue attribution built into every send.
How fast can Zefir send SMS campaigns?
Zefir is built for campaigns that need to reach large audiences in minutes, with sender registration, carrier throughput, and delivery health managed before and during each send.
Does Zefir support advanced SMS segmentation?
Yes. Segments can target purchase history, browsing behavior, cart activity, order value, engagement, lifecycle stage, and live store data synced at send time.
Can Zefir run A/B tests on SMS?
Yes. Teams can test copy, offers, timing, and links, then measure winners by revenue per send rather than clicks alone.
How is SMS revenue attributed?
Every order is tied back to the campaign, flow, segment, and message that drove it, so teams can evaluate SMS by revenue, conversion, opt-outs, and delivery health.
Is Zefir SMS compliant?
Yes. Zefir supports TCPA-compliant opt-in, 10DLC-registered sender numbers, quiet-hours enforcement by recipient time zone, and instant opt-out handling.
What do we need to launch?
Zefir handles sender registration, store data connection, campaign setup, deliverability monitoring, and compliance configuration. Your team provides approvals and campaign goals.
Can we migrate from another SMS tool?
Yes. Zefir can migrate lists, consent records, segments, and campaign logic from existing SMS tools with minimal disruption.
Does SMS connect to our ecommerce data?
Yes. Customer, product, order, browsing, cart, and engagement data can power segments, personalization, and reporting.
Who is Zefir SMS for?
Zefir SMS is built for ecommerce teams that send at meaningful volume and need reliability, measurement, and compliance rather than a lightweight texting tool.
Can multiple teams use it?
Yes. Marketing, lifecycle, retention, and analytics teams can use shared reporting and campaign performance views.
Do you offer onboarding support?
Yes. Zefir helps configure SMS infrastructure, campaigns, segments, reporting, compliance, and launch workflows.
Do I need technical resources to use Zefir?
No. Zefir is fully managed. We handle the WhatsApp Business API, integrations, compliance, and system setup. Your team approves the brand voice once — Zefir runs the channel.
Is SMS marketing legal in the US?
Yes, with proper consent. Zefir supports TCPA-compliant opt-in, required sender registration, quiet-hours enforcement, and instant opt-out handling.
What is 10DLC registration?
10DLC registration verifies brand and campaign use cases with carriers so high-volume SMS can be delivered through approved sender numbers.
How does deliverability monitoring work?
Zefir monitors delivery health continuously, including carrier-level performance signals and send outcomes, so issues are surfaced before they affect major campaigns.
Does Zefir enforce quiet hours?
Yes. Quiet-hours rules can be enforced by recipient time zone so messages are sent within compliant windows.
How does opt-out handling work?
Opt-outs are handled instantly and applied across future sends so unsubscribed recipients are not messaged again.
How does pricing work?
Zefir supports usage-based SMS volume with pricing designed for scale rather than per-seat licensing.
How does pricing work?
Zefir is usage-based. Brands load credits and messaging scales with volume — no per-seat licenses and no long-term lock-in. See the pricing page for details.
SMS built for serious scale.
Run high-volume SMS campaigns with deliverability, personalization, testing, and attribution your team can measure.
Talk to sales
1,000+ ECOMMERCE BRANDS · $530M+ ATTRIBUTED REVENUE · TCPA-COMPLIANT US MESSAGING