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MailBridge — Unified Email Hub & Secure HMAC Bridge | Velaxe

MailBridge

Connect Microsoft 365 (Outlook) via Graph/SMTP

Use Microsoft Graph/OAuth to sync and send; optionally enable shared mailboxes.

10 min Beginner Tenant Admin, IT Updated Sep 19, 2025
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Overview

Use Microsoft Graph/OAuth to sync and send; optionally enable shared mailboxes.

Prerequisites

  • Global Admin consent may be required for tenant-wide access

Permissions required

email.read email.send email.accounts.manage

Steps (3)

Estimated: 10 min
  1. 1

    Sign in with Microsoft

    Tenant Admin 3 min Back to top

    Settings → Accounts → **Connect Microsoft 365**.

    Tips

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    Validation

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    Success criteria

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  2. 2

    Select mailbox & folders

    Admin 3 min Back to top

    Pick user or shared mailbox; choose folders to sync.

    Tips

    —

    Validation

    —

    Success criteria

    —

  3. 3

    Test send

    Admin 4 min Back to top

    Send a test through SMTP/Graph and confirm delivery.

    Tips

    —

    Validation

    —

    Success criteria

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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.