---
title: "Custom MAIL FROM Domains | OutboundSMTP"
description: "Use your own domain as the MAIL FROM (envelope sender) for complete brand consistency, DMARC alignment, and improved deliverability."
image: "https://outboundsmtp.com/images/og-default.png"
canonical: "https://outboundsmtp.com/features/custom-mail-from/"
---

# Custom MAIL FROM Domains

Take full control of your email envelope sender. Your domain, your reputation, your deliverability.

[ Try 1000 Free Credits → ](https://insight.iljmp.com/4/smtp-free) 

The Difference 

## With vs. without Custom MAIL FROM

### Without Custom MAIL FROM

```
From: you@yourdomain.com
Return-Path: bounce@smtp-provider.com
MAIL FROM: smtp-provider.com

SPF: pass (smtp-provider.com)
DMARC: FAIL (domain mismatch)
```

The envelope sender shows the provider's domain. SPF passes for the wrong domain. DMARC alignment fails.

### With Custom MAIL FROM

```
From: you@yourdomain.com
Return-Path: bounce@mail.yourdomain.com
MAIL FROM: mail.yourdomain.com

SPF: pass (yourdomain.com)
DMARC: PASS (aligned)
```

The envelope sender uses your domain. SPF passes for your domain. DMARC alignment succeeds.

Benefits 

## Why Custom MAIL FROM matters

### Brand Consistency

Every part of your email -- from the visible sender to the envelope -- reflects your brand. No third-party domains visible to recipients or mail servers.

### DMARC Alignment

Custom MAIL FROM enables SPF alignment with your sending domain. Combined with DKIM, you achieve full DMARC compliance even with strict policies.

### Improved Deliverability

Mailbox providers reward properly aligned authentication. Custom MAIL FROM helps your emails pass authentication checks that improve inbox placement.

### Professional Bounce Handling

Bounce messages return to your domain instead of a third-party address. Maintain control over bounce processing and reputation management.

Implementation 

## Set up in four simple steps

 1 

### Choose Your Subdomain

Select a subdomain for your MAIL FROM address, such as mail.yourdomain.com or bounce.yourdomain.com.

 2 

### Add DNS Records

We provide the MX and SPF records for your subdomain. Publish them in your DNS to enable bounce processing and authentication.

 3 

### Verify Configuration

Our team verifies that your DNS records are published correctly and that authentication passes end-to-end.

 4 

### Start Sending

Your emails now use your custom MAIL FROM domain. DMARC alignment is automatic for every message you send.

## Take control of your envelope sender

Custom MAIL FROM domains included with every plan. Start with 1,000 free credits.

[Try 1000 Free Credits→](https://insight.iljmp.com/4/smtp-free)[Schedule a Demo](/contact-us/)

```json
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```

```json
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```

```json
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```