head to head/Developer Tools

Sendmux vs SignOps

Neck and neck on boosts. Profiles, pricing and deals below.

Sendmux

The Email API for AI Agents, with Inboxes

community boosts

⚡ 0

pricing

Freemium

what it is

Sendmux is an email API that gives every AI agent a real inbox. Send and receive, route outbound through your own providers, and fail over automatically.

SignOps

API docs: push, Approve, passkeys, TOTP and email OTP

community boosts

⚡ 0

pricing

Freemium

what it is

SignOps API reference: quickstart, API keys, push and topics, Approve, passkeys, authenticator codes, email OTP, webhooks, events, limits and Android delivery.