Every channel. One platform.
Email, SMS, WhatsApp, push, voice. BitsPath is our unified CPaaS with a carrier-grade Rust PBX core. We also integrate Twilio, SendGrid, or MessageBird. The choice is yours.
What is the LoneSock communications service?
A multi-channel communications engineering practice covering email, SMS, WhatsApp, push notifications, and carrier-grade voice. BitsPath is the default platform: 13 .NET microservices, a Rust SIGTRAN SMS gateway, and a Stalwart webmail. Twilio, SendGrid, and local aggregators are equally supported.
Where a client needs sovereign hosting, white-label reseller capability, or true PBX-grade voice, BitsPath is the right tool. Where the workload is predominantly transactional US or EU traffic, Twilio plus SendGrid is often the cleaner choice. We will pick the right combination.
Four channels, one unified API.
The same campaign, customer, and template models across every channel. No glue code between providers.
Email
Inbox placement on warmed domainsSmart SMS routing
SIGTRAN direct interconnectCarrier-grade voice
~50K LoC Rust PBXWhatsApp and push
Unified API, all channels
LoneSock against going direct to Twilio and in-house build.
| Dimension | LoneSock | Twilio direct | In-house build |
|---|---|---|---|
| South Asia carrier coverage | Direct interconnect, BTRC compliant | Via aggregator, higher cost | Build from scratch, months |
| Voice grade | Carrier-grade Rust PBX | PaaS, generic SIP | Asterisk or FreeSWITCH stitched |
| White-label reseller | Built-in (BitsPath multi-tenant) | Not supported | Build from scratch |
- South Asia carrier coverage
- LoneSockDirect interconnect, BTRC compliantTwilio directVia aggregator, higher costIn-house buildBuild from scratch, months
- Voice grade
- LoneSockCarrier-grade Rust PBXTwilio directPaaS, generic SIPIn-house buildAsterisk or FreeSWITCH stitched
- White-label reseller
- LoneSockBuilt-in (BitsPath multi-tenant)Twilio directNot supportedIn-house buildBuild from scratch
Frequently asked.
What is the LoneSock communications and CPaaS service?
It is a multi-channel communications engineering practice: email, SMS, WhatsApp, push notifications, and carrier-grade voice. The default platform is BitsPath, a unified comms stack of 13 .NET microservices plus a Rust SIGTRAN SMS gateway and a Stalwart-based webmail. Alternative integrations include Twilio, SendGrid, MessageBird, Infobip, and local aggregators.
Do clients have to use BitsPath?
No. BitsPath is presented as a platform option for clients who want unified billing, white-label reseller capability, or carrier-grade voice. Twilio, SendGrid, MessageBird, or any combination of best-of-breed providers is a fully supported alternative. The choice depends on geography, compliance, and existing carrier relationships.
Is the voice platform truly carrier-grade?
Yes. BitsPath Voice is a pure Rust PBX engine of roughly 50K lines, with SIP, RTP, SRTP, and WebRTC support, and a SIGTRAN-based SMS gateway. Designed for IPTSP and telecom operators, not just SaaS chat-overlays. Predictable memory footprint, low jitter, and thousands of concurrent calls per node.
What is the deliverable email inbox-placement rate?
BitsPath ships with DKIM, SPF, and DMARC pre-configured, IP-warming playbooks, and content-scoring. Inbox placement on warmed IPs is consistently above 95 percent on transactional mail with proper DNS and content hygiene. Marketing volumes vary by list health.
Is the messaging compliant with local regulators?
Yes. SMS routing supports BTRC compliance for Bangladesh and DLT for India. International integrations are designed for GDPR, PECR, and TCPA. The compliance layer is part of the build, not a post-launch retrofit.
How does this compare to going direct to Twilio?
Twilio is a clean US-dollar billing line and a good fit if your traffic is predominantly North America or EU. LoneSock plus BitsPath wins when you need Bangladesh and South Asia carrier interconnect, sovereign hosting, white-label reseller, or PBX-grade voice. We integrate both, and we route by destination.
Need a communications platform?
BitsPath or Twilio. Tell us the destinations, the channels, the volumes, and we will architect the right routing.
- Principal
- Lutfar Rahman (Nirjhar), CEO
- [email protected]
- Office
- 13/1 Sonargaon Road, Planners Tower L19-S5, Dhaka 1000, Bangladesh