GLOBAL
CRM & Sales
Twilio
Global SMS, voice, WhatsApp, email, and authentication API platform. 100+ country numbers; developer docs are the industry standard.
Editor
Jake's editor noteKorea has cheaper KT/SKT-based options (Aligo, NHN Toast), but global deployments land on Twilio anyway. In Japan, Twilio is effectively the standard.
Key Features
• SMS / MMS / voice APIs
• WhatsApp + SendGrid
• Verify (OTP) + Lookup
• Flex contact center
• Programmable Voice
Pricing
Pay-as-you-go. SMS priced by country (from $0.0075). Voice and WhatsApp billed separately.
FAQ
Korean / Japanese numbers?
Supported — Korean 010 requires carrier approval (pre-registered sender IDs); Japan supports 050, 0120, and mobile with KYC.
Relationship with SendGrid?
SendGrid is a Twilio subsidiary focused on email; integrates with SMS/Voice in one dashboard.
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