Managed SMS, RCS and WhatsApp gateway operations for UK SaaS and CPaaS teams
Keep your existing messaging vendors. Flowstates manages the operational layer across SMS, RCS, WhatsApp and fallback channels, helping SaaS and CPaaS teams improve delivery quality, reduce complexity and control messaging costs.
- Managed SMS, RCS and WhatsApp gateway operations
- Multi-vendor routing, monitoring and failover
- Support for API, SMPP, webhooks and customer journey logic
- Built for SaaS, CPaaS, aggregators and high-volume senders
Messaging operations should not slow your product team down
For many SaaS and CPaaS teams, messaging starts simple and quickly becomes operationally complex. Different vendors, country rules, sender IDs, WhatsApp templates, RCS availability, delivery failures, OTP retries, rising SMS costs and support tickets all compete for engineering time.
Flowstates gives your team a managed gateway operations layer, so you can keep control of your messaging strategy without spending every week chasing routes, vendors and delivery issues.
SMS aggregators, WhatsApp BSPs, RCS partners and direct routes — each with its own portal, contract and escalation path.
Verification messages dropping silently across markets with no clear root cause or retry strategy.
Delivery receipts scattered across dashboards, with no consolidated view of route performance by country or vendor.
Vendor pricing creeps, traffic mix shifts, and nobody on the team owns commercials reviews.
Engineers chasing carriers and aggregators in Slack threads at 2am instead of shipping product.
Rules for when to fall back, where, and for whom — usually living in someone's head, not in the gateway.
Roadmap commitments slipping while internal teams firefight delivery and routing issues.
What Flowstates manages for you
Flowstates manages the gateway layer between your product, your customers and your messaging providers. We help you operate SMS, RCS, WhatsApp and related channels more reliably, without forcing you into a single CPaaS vendor or a rip-and-replace migration.
Per-country, per-category routing across your existing aggregators and direct routes.
Brand sender setup, template management and BSP coordination for supported markets.
Automatic re-routing when a vendor degrades, with rules tuned to your traffic profile.
Sub-second routing, retry logic and conversion-based monitoring for one-time passwords.
Branded short links with click-level tracking, threaded into customer journeys.
Connect via HTTPS, SMPP or async webhooks — whatever your stack already speaks.
Consolidated DLR view across vendors, with anomaly detection and incident triage.
We own the carrier and aggregator escalations, so your team doesn't have to.
Ongoing route reviews, vendor commercials benchmarking and monthly cost reporting.
Add voice OTP, voice fallback and transactional email where customer journeys need them.
Keep your existing vendors. Let Flowstates run the operation.
Many platforms already have relationships with providers such as SMS aggregators, CPaaS vendors, WhatsApp BSPs, direct routes or local in-country suppliers. Flowstates does not require you to abandon those relationships. We can work with your current vendors, add new routes where needed, create intelligent fallback rules and give your team a managed operational layer across the entire messaging stack.
- Move traffic onto one provider
- Limited control over routing
- Vendor lock-in risk
- Escalations depend on one supplier
- Internal team still handles operational noise
- Keep existing vendors where they work
- Add routing intelligence and failover
- Improve visibility across providers
- Manage escalations and monitoring
- Reduce engineering and operations workload
SMS, RCS, WhatsApp and fallback journeys
High-volume transactional, OTP, alerts, reminders and campaign messaging with route monitoring, DLR visibility and multi-provider failover.
Rich branded messaging for supported markets and use cases, with fallback planning where RCS is not available or not appropriate.
Customer conversations, alerts, notifications and approved-template messaging, integrated into wider customer journeys.
Design fallback logic across SMS, RCS, WhatsApp, voice and email depending on delivery status, urgency, customer preference and market rules.
Built for real messaging operations
Improve resilience for 2FA, login, password reset and transaction verification with provider failover and delivery monitoring.
OTP delivery routingCoordinate SMS, RCS, WhatsApp, email and short links inside structured customer journeys.
CPaaS operations supportAdd managed routing and operational support without rebuilding your core product.
Managed Gateway as a ServiceSupport high-volume transactional traffic where reliability and delivery visibility matter.
multi-vendor routingAdd operational support, route optimisation and gateway management across supplier networks.
Aggregator in a BoxReduce dependency on internal engineering teams for messaging operations, route management and vendor escalations.
SMS vendor escalationTechnical capability without operational overload
A working set of capabilities Flowstates brings to a managed gateway engagement.
Exact implementation depends on your current stack, traffic profile and target markets.
Designed for UK SaaS and CPaaS teams with international messaging needs
Flowstates supports UK-based teams that need reliable customer messaging across domestic and international markets. Whether your traffic is UK-only or spans Europe, the US and LATAM, we help create a managed gateway strategy that balances delivery quality, customer experience, compliance, cost and operational control.
See our UK & Ireland messaging operations page for region-specific details.
How a Flowstates gateway review works
- Step 01Review your current messaging stack
We look at your vendors, routes, channels, APIs, use cases, volumes and delivery pain points.
- Step 02Identify routing and operational gaps
We assess failover, DLR visibility, vendor performance, cost drivers and support workflows.
- Step 03Design the managed gateway model
We define how Flowstates can manage routing, monitoring, fallback, escalation and reporting.
- Step 04Operate and optimise
Flowstates manages the gateway layer day to day, with ongoing route reviews, performance monitoring and cost optimisation.
Why teams choose Flowstates
Ready to simplify your messaging gateway operations?
Book a Gateway Review with Flowstates. We will review your current messaging setup, identify operational gaps and show where managed routing, fallback and vendor oversight can improve reliability and reduce complexity.