VoIP calls
Your reliable AI business phone system
Bring your Twilio number or buy one inside SleekFlow, and start handling calls alongside every other communication channel.
Table of contents
How SleekFlow VoIP works
Build on Twilio's global voice network
The telephony backbone trusted by thousands of Fortune 500 companies. Powering businesses calling at scale with carrier-grade uptime and quality.
Keep the number your customers know
If you're on Twilio, connect it to SleekFlow in a few clicks. If you're with another provider, talk to us. We'll review porting options for your number.
Run calls on the devices you already use
Plug in a headset and take calls from the SleekFlow web app or the mobile app on iOS and Android. Agents call from the business number, not their personal one.
Organize calls by brand, region, or business unit
Run separate workspaces for each, with their own numbers, agents, routing, and recordings. Admins control who can listen, transfer, or export.
Frequently Asked Questions
US Toll-Free and US Local (10DLC) numbers are ready to use today. We're rolling out Singapore next, with more countries on the way. If you're operating somewhere we don't cover yet, reach out, and we'll tell you where we are.
Self-serve porting isn't supported today, but we'll review your number and walk through the options. Whether you're on a cloud VoIP, a traditional telco, or a mobile carrier, we work with customers case by case. Talk to us.
SleekFlow VoIP runs on a pay-as-you-go wallet model. Calls are charged per minute, deducted from your shared SMS & Voice wallet, with rates depending on the country and call direction. See the pricing page for current rates, or talk to us about your expected call volume.
Highly Rated by Industry Leaders
| 4.5 out of 5 stars | 170+ real users speak for us
