What Silverstreet does

Silverstreet is a cloud communications platform-as-a-service (CPaaS) provider founded in 1999 in Tilburg, Netherlands, and headquartered operationally in Kuala Lumpur, Malaysia. The company offers programmable SMS, SS7-quality Number Lookup (HLR), multi-channel Verification/2FA (SMS, voice, push, TOTP, Bio Voice, backup codes), email, push notifications, and an AI chatbot, all delivered through a REST API with regional endpoints in Singapore and Frankfurt. Silverstreet's core technical differentiator is a proprietary SMSC platform hosted within the SS7 networks of mobile operator partners, providing direct connectivity to 800+ mobile operators globally and supporting 18M+ daily transactions across 3,000+ customers.

The company operates an API-first, product-led go-to-market with a self-serve developer portal, credit-based wallet pricing, and usage-based billing (per-message, per-lookup, per-verification). Customer segments span banking and financial services, SMS aggregators, enterprise and government, online services and e-commerce, healthcare, retail, education, IoT/M2M, and travel and hospitality, with wholesale/bulk SMS as a direct-sales motion for high-volume anchors. The company is a wholly owned subsidiary of Soprano Design following the December 2020 acquisition, which expanded its portfolio to include RCS, WhatsApp for Business, voice, and IP messaging under the parent.

Silverstreet maintains offices in Singapore (regional HQ), Amsterdam, Kuala Lumpur, Bangkok, Jakarta, and Warsaw, with a 52+ employee team representing 10 nationalities and 17 languages. The Twizo sub-brand bundles the company's communicate and authenticate product lines. Revenue, ARR, and funding totals are not publicly disclosed; the only known external capital event is a 2013 investment from Impiro Pte Ltd. The company is a member of GSMA, the Mobile Ecosystem Forum (MEF), and the Malaysia Digital Business Club (MDBC).

Name

Silverstreet

Legal name

Silverstreet International Pte Ltd

Website

https://silverstreet.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

51–100 employees

Short description

Silverstreet is a CPaaS provider offering programmable SMS, Number Lookup, multi-channel 2FA, email, push, and AI chatbot APIs across 800+ mobile operators, serving 3,000+ enterprise, government, banking, and developer customers globally.

Ownership category

akta.pro rank

Headquarters

HQ city

Kuala Lumpur

HQ country

Malaysia

HQ region

Asia

Offices7 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. SMS Messaging: Transaction-based pricing where customers pay per SMS sent, with pricing varying by destination country and operator. Supports bulk SMS wholesale for high-volume customers.
2. Number Lookup: Per-lookup pricing for HLR lookups, number verification, and portability checks. Customers pay based on the number of queries performed.
3. Verification/2FA Services: Pay-per-verification model with free monthly verifications included. Additional verification types (SMS, voice, push, TOTP) have associated costs.
4. E-mail and Push Services: Email and push notification services with credit-based wallet system for payment
5. Wholesale/Bulk SMS: Enterprise-grade wholesale SMS services for aggregators, banks, governments, and multinational enterprises with volume-based pricing

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels8 records

Core offering

Silverstreet is a cloud communications platform-as-a-service (CPaaS) that delivers programmable SMS, Number Lookup (HLR), multi-channel Verification/2FA, AI Messaging, email, and push notification services. The unified REST API exposes endpoints for SMS MT/MO, HLR lookups, verification (SMS, voice, push, TOTP, Bio Voice), email via Mailgun, and push notifications via Firebase, with regional endpoints in Singapore (api-asia-01) and Frankfurt (api-eu-01). Silverstreet routes traffic through direct connections to 800+ mobile operators and MNOs/MVNOs worldwide, processing 18M+ transactions per day for 3,000+ customers.

Product overview

Silverstreet is a cloud communications platform (CPaaS) offering programmable SMS, Number Lookup, Verification/2FA, E-mail, Push Notifications, and Address Book services. The platform operates through a unified API architecture with regional endpoints in Singapore and Frankfurt. SMS and Number Lookup serve as the core products with global coverage across 800+ mobile operators, while Verification/2FA provides multi-channel authentication including SMS, voice, TOTP, backup codes, and Bio Voice biometric verification. Additional communication channels include E-mail (via Mailgun) and Push Notifications (via Firebase). The company was acquired by Soprano Design in December 2020, with Twizo serving as a sub-brand for communicate and authenticate products.

Differentiator

Problem solved

Functional benefit

Brands

• Twizo: Multi-channel communication platform offering verification and authentication services including SMS, voice, and chatbot capabilities.

Products and services

• SMS
• Number Lookup
• Verification / 2FA
• E-mail
• Push Notifications
• Twizo Communicate
• Twizo Authenticate

Quantifiable outcome

• 98% SMS open rates - people will definitely see what you send to them
• +3 more outcomes

Named customers3 records

Segments9 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability2 records

Feature8 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Soprano DesigncoreStrategic or Co-development Partner · 16 December 2020On December 16, 2020, the acquisition of Silverstreet by Soprano Design became effective. The union allows improvement of the communication services portfolio and greater presence in the Asian market. The acquisition consolidates Soprano Design as one of the leaders in CPaaS. Silverstreet brings AI chatbot service that enriches Soprano's portfolio.
• GSMAminorOthersSilverstreet is an active GSMA Industry Member. The membership provides industry credibility and access to GSMA resources and networking.
• Mobile Ecosystem Forum (MEF)minorOthersSilverstreet is an active member of MEF, a global industry association focused on mobile ecosystem standards and best practices.
• Malaysia Digital Business Club (MDBC)minorOthersSilverstreet is an active member of MDBC, supporting digital business networking in Malaysia.

Scale indicators11 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Infobip: Major global CPaaS platform with 800+ operator connections, omnichannel messaging (SMS, RCS, WhatsApp, Viber), number lookup and conversational AI. Highly comparable to Silverstreet's SS7-grade direct-connect strategy and product breadth.
• Plivo: Cloud communications platform offering SMS, voice and WhatsApp APIs with similar API-first, developer-centric positioning. Directly comparable in scale and target customer profile to Silverstreet.
• CM.com: European CPaaS and conversational commerce platform providing SMS, WhatsApp, voice and payment APIs. Closely comparable business model and customer profile (mid-market enterprises using API-first messaging).
• Telesign: Communications Platform-as-a-Service focused on identity, verification and messaging APIs. Direct competitor in the 2FA and phone-number verification segments that Silverstreet's Twizo sub-brand also targets.
• Sinch: Sweden-based CPaaS provider with deep operator relationships and a strong SMS/messaging wholesale business plus verification (Sinch Verify). Competes directly with Silverstreet in A2P SMS routing and 2FA, particularly across European and emerging markets.
• MessageBird (Bird): Amsterdam-headquartered omnichannel CPaaS offering SMS, WhatsApp, voice and email APIs with strong European roots and SEA expansion. Direct competitor in the developer/mid-market messaging segment Silverstreet targets.
• Bandwidth Inc. Programmable communications platform providing SMS, voice and 9-1-1 APIs with global reach. Comparable CPaaS operating model targeting enterprise developers similar to Silverstreet's API-first motion.
• Twilio: Global CPaaS leader offering programmable SMS, voice, 2FA (Verify) and email APIs across a developer-first platform. Closest direct competitor to Silverstreet's SMS + verification stack, but operates at vastly larger scale.
• Vonage Communications APIs (Ericsson): Programmable SMS, voice and video APIs serving developers and enterprises, now part of Ericsson. Competes with Silverstreet in programmable messaging and 2FA for SaaS and digital-native customers.

Others

• Soprano Design: Acquirer of Silverstreet and parent CPaaS provider offering RCS, WhatsApp for Business, Email, Voice and IP messaging. Adjacent rather than competing — Silverstreet's SMS and verification capabilities integrate into Soprano's broader portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Silverstreetbv
• LinkedInlinkedin.com/company/silverstreet-bv
• Facebookfacebook.com/silverstreet

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries2 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Silverstreet