Velaxe
MailBridge — Unified Email Hub & Secure HMAC Bridge | Velaxe

MailBridge

Securely call the HMAC Bridge from another app

Create a Connection, restrict by scopes/IPs, and sign requests with rotating secrets.

15 min Intermediate Platform Engineer, Developer Updated Sep 19, 2025
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Overview

Create a Connection, restrict by scopes/IPs, and sign requests with rotating secrets.

Prerequisites

None.

Permissions required

connections:manage

Downloads & Templates

Signing example (Node/PHP)

Spec

Steps (3)

Estimated: 15 min
  1. 1

    Create a Connection

    Engineer 4 min Back to top

    Connections → **New**. Choose scopes like accounts.suggest or compose.send.

    Tips

    —

    Validation

    —

    Success criteria

    —

  2. 2

    Restrict access

    Engineer 4 min Back to top

    Add IP allowlist entries and set expiration for the secret.

    Tips

    —

    Validation

    —

    Success criteria

    —

  3. 3

    Sign & call

    Engineer 5 min Back to top

    Sign `<timestamp>.<raw-body>` with HMAC-SHA256 using the provided secret. Send headers X-EH-TS and X-EH-SIG.

    Tips

    —

    Validation

    —

    Success criteria

    • Bridge logs show 2xx with latency under 250ms.

About this guide

MailBridge centralizes business email inside your Velaxe workspace. Connect IMAP/SMTP accounts (including OAuth providers) and the background poller ingests folders, flags, bodies, and attachments with safe throttles. Compose drafts with uploads, send immediately, or enqueue to the bulk sender with pacing and retry policies.

A hardened, timestamped HMAC bridge lets external apps request account suggestions or send mail via signed requests—no CORS headaches. Connections include scopes, IP allowlists, and rotating secrets with audit logs and analytics.

Verification tools probe domains/MX/SMTP and cache outcomes to reduce bounces. Events integrate with workflows and AI responses so teams can automate follow-ups and logging into CRM/Chronicle.