Flowroute
Flowroute is a cloud communications service for businesses, developers, CPaaS providers, dealers, partners and contact centers.
What Flowroute is
Flowroute is a cloud communications service for businesses, developers, CPaaS providers, dealers, partners and contact centers. It provides SIP trunking, voice and messaging APIs, phone numbers, faxing and call forwarding, and can connect existing PBX systems or telephone adapters for inbound and outbound calls. Its patented HyperNetwork dynamically routes inbound DID numbers to support business continuity. The Numbers API can search for and purchase US and Canadian numbers, manage inbound routes, and automate E911 and CNAM setup. Messaging APIs support SMS and MMS, with customizable routing through webhooks and message detail records. Flowroute also lists FreeSWITCH as a certified service provider integration and describes compatibility with FreeSWITCH systems. Account controls include IP-based outbound authentication, outbound rate limits, and destination blacklists and whitelists. The service is paid, with metered usage billed pay-as-you-go; rates vary by service and usage. SMS and MMS may have additional fees and surcharges, and outbound call rates vary by country.
Good
- Connects existing PBX systems and telephone adapters.
- Supports SMS and MMS through APIs.
- Numbers API manages US and Canadian numbers.
- Includes IP-based authentication and destination controls.
- Free, non-tiered support is available.
Watch out
- No free plan is listed.
- SMS and MMS incur additional fees and surcharges.
- Outbound calling rates vary by country.
- Metered usage charges vary by service and usage.
Who it suits
Flowroute suits businesses, developers, CPaaS providers, dealers, partners and contact centers that need voice, messaging or phone-number services through APIs or existing telephony systems. Its number management and fraud controls may suit teams that need to automate number setup or restrict outbound calling.
Verdict
Flowroute brings voice, messaging, number management and call routing into a single cloud communications service. Check variable usage rates and messaging surcharges against your requirements before choosing it.
Plans and prices
From Flowroute's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| CNAM lookup | Free | CNAM storage is free · per lookup |
| Long-code SMS | Free | Inbound and outbound · additional fees and surcharges apply · metered |
| Domestic inbound calling | $0.01 a month | US domestic inbound · no simultaneous-call limit · metered |
| Long-code MMS | $0.01 a month | Inbound and outbound · additional fees and surcharges apply · metered |
| US/Canada outbound calling | $0.01 a month | US lower 48 and Canada outbound · metered |
| Toll-free SMS | $0.01 a month | Inbound and outbound · additional fees and surcharges apply · metered |
| Toll-free calling | $0.01 a month | US and Canada inbound · $0.00530 dip charge per call · metered |
| Toll-free MMS | $0.02 a month | Inbound and outbound · additional fees and surcharges apply · metered |
| DID number | $1 a month | Direct inward dialing number · recurring |
| Metered usage | — | Domestic inbound from $0.005/minute · US lower 48 & Canada outbound from $0.00833/minute · Usage-based SMS, MMS, and number charges · Pay-as-you-go; rates vary by service and usage |
| E911 association | — | Unprovisioned or incorrect 911 call costs $95 per call · monthly recurring |
The facts
Each one read from Flowroute's own pages, with the date it was checked.
What it does
- API authentication
- The Messaging API uses HTTP Basic Authentication with an access key as username and secret key as password.checked 15 Oct 2026
- Calling
- The service connects existing PBX systems or telephone adapters for inbound and outbound calls.checked 30 Sep 2026
- Developer documentation
- Documentation includes API references, articles, quickstarts, Docker repositories and use-case guides for masking, two-factor authentication and appointment reminders.checked 15 Oct 2026
- Faxing
- Flowroute offers T.38 fax routes for sending and receiving faxes remotely.checked 15 Oct 2026
- Fraud protection
- Account controls include IP-based outbound authentication, maximum outbound rate limits, and destination blacklists and whitelists.checked 30 Sep 2026
- HyperNetwork
- Its patented HyperNetwork dynamically changes inbound DID routing to alternate carriers to provide failover and redundancy.checked 15 Oct 2026
- Integrations
- The FAQ lists integrations with 3CX, Asterisk and FreeSWITCH, and describes the APIs as software-agnostic.checked 15 Oct 2026
- Intended users
- Flowroute describes its platform as suited to businesses, developers and CPaaS providers, and dealers and partners; its call-center page also targets contact centers.checked 30 Sep 2026
- Licence
- The hosted Flowroute service is proprietary under terms granting a limited, non-transferable use licence, although its SDK libraries are open source.checked 15 Oct 2026
- Limit: messaging registration
- A G2 reviewer reported a 23-day delay in 10DLC registration that disabled business texting.checked 15 Oct 2026
- Limit: porting and outages
- Reviewers report call drops, network incidents and porting delays, including a migration that took more than three weeks.checked 15 Oct 2026
- Limit: support quality
- Multiple G2 and Capterra reviewers report slower or less effective support after ownership changes and during troubleshooting.checked 15 Oct 2026
- Limit: Trustpilot complaints
- Trustpilot reviewers report wrong call routing, spam labeling, duplicate card charges, unexplained cancellations and unanswered tickets.checked 15 Oct 2026
- Messaging
- Its APIs support SMS and MMS, including customizable routing through webhooks and message detail records.checked 30 Sep 2026
- MMS
- MMS sends and receives image, video and audio content to North American text-enabled numbers.checked 15 Oct 2026
- Number management
- The Numbers API can search for and purchase US and Canadian numbers, manage inbound routes, and automate E911 and CNAM setup.checked 30 Sep 2026
- Phone numbers
- Customers can buy or port local, toll-free and vanity numbers in the United States and Canada with caller ID, E911 and CNAM options.checked 15 Oct 2026
- Praise: pricing and setup
- G2 reviewers repeatedly praise competitive pricing, an easy portal, straightforward setup and simple PBX connections.checked 15 Oct 2026
- Praise: reliability
- Reviewers describe clear call quality, strong uptime and reliable DID routing when the service is operating normally.checked 15 Oct 2026
The company
- Company profile
- LinkedIn lists Flowroute as a privately held BCM One company with 501–1,000 employees, New York headquarters and a 2007 founding year.checked 15 Oct 2026
- Founded
- 2007checked 28 Sep 2026
- Headquarters
- Seattle, Washington, United Stateschecked 28 Sep 2026
- Ownership change
- BCM One announced acquisition of Flowroute assets from Intrado on March 9, 2022, with terms undisclosed.checked 15 Oct 2026
Money
- Free account
- Flowroute says users can create a free Manage portal account for service ordering, number porting, and service management.checked 30 Sep 2026
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