Communications APIs.
A communications API handles the message layer around your product — checking that an address is real and deliverable before you send to it, drafting the copy, and standing up throwaway inboxes when you need to test the flow end to end.
Also called an email API, messaging API, deliverability API or notification API4 services in this categoryCommunications APIs
4 servicesValidate Email DNS API (Including Disposable Emails)
Verify an email address and get a boolean deliverability result. Reject disposable domains before MX checks for cleaner signups and lists.
Generate Thank You E-mail API
Generate thank-you emails from a content prompt, with optional language, length, and tone controls. Returns async job status and the final email text.
Email Validation Report
Validate any email address and get a structured report with syntax, MX, disposability, reachability, and a 0–100 deliverability score.
Temporary and Disposable emails API
Create disposable inboxes, read incoming messages, and delete mailboxes. Useful for sign-up testing, QA, and short-lived verification flows.
Which Communications API do you need?
The question you arrived with, and the endpoint that answers it.