SendiMessage product overview

What SendiMessage is

SendiMessage is managed messaging infrastructure. We provision dedicated messaging lines for your business and give you one clean API to send SMS and — on supported lines and destinations — iMessage, with delivery tracking, incoming replies, and signed webhooks back to your systems.

Who it's for

• Product and engineering teams adding customer messaging to commerce, logistics, scheduling, support, or SaaS products
• Operations teams that need delivery visibility and a support path, not another console to babysit
• Businesses that want messaging reviewed, provisioned, and activated with a specialist — not a self-serve form

Core capabilities

• Managed messaging lines — provisioned, configured, and monitored for you
• One API — POST /send-message for every workflow; queued responses with a full lifecycle
• Channel routing — iMessage where supported, SMS fallback when configured, per recipient
• Delivery tracking — queued → delivered, visible via API and webhooks
• Incoming replies — two-way conversations, attributed via your own metadata
• Signed webhooks — one normalized event format with retries

The message journey

Your application posts one request → SendiMessage validates and queues it → routing selects the channel per recipient → the managed line delivers → the customer replies → delivery and reply events return to your endpoint as signed webhooks → your systems stay in sync.

Managed onboarding and pricing

Every line is reviewed before activation: use case, destination countries, availability, and pricing. Once approved, we provision the test line, deliver credentials securely, and guide the integration to production. Pricing is per active line, billed monthly, with usage per your agreement — confirmed for your countries and volume during the review.

Next step

Request a Line at sendimessage.com/request-line, or book an integration review at sendimessage.com/book-integration-review. Questions: hello@sendimessage.com.