Surge

Surge is an SMS, MMS, and voice API platform that helps developers and vertical SaaS companies add messaging and calling to their applications. It addresses the challenges of carrier registration, which can be slow and opaque, by providing a streamlined process for 10DLC and toll-free number approval. The platform also offers embeddable messaging components, allowing software products to include a messaging inbox without building one from scratch.

The platform provides a REST API and official SDKs for Node.js, Python, Ruby, Elixir, and cURL. Key capabilities include sending messages with attachments, managing conversations, and automating link shortening to improve deliverability. A no-code message blast feature is available for sending messages without coding. The platform also offers pre-built registration templates to simplify the process of registering multiple phone numbers with carriers.

Surge is designed for developers, AI coding agents, and vertical SaaS platforms that need to manage messaging for multiple customers. It offers tiered monthly plans: a Hobby plan with one toll-free number and usage credit, a Starter plan with up to three numbers, a Growth plan with up to 15 numbers, and a Custom plan with unlimited numbers and features like SAML SSO and HIPAA compliance. All plans include a monthly credit toward usage, with additional per-message rates applied beyond that credit.