---
title: "SPF, DKIM & DMARC Setup Made Easy | FirstSales"
description: "Guided SPF, DKIM, and DMARC setup with continuous monitoring so your domain stays authenticated and trusted. A core reason senders hit 87% inbox placement."
canonical: "https://firstsales.io/email-authentication/"
---

[Home](/)

Email Authentication

Email Authentication · SPF, DKIM & DMARC done right

# Authenticate your domain so cold email lands, not bounces

Unauthenticated cold email dies in spam. FirstSales checks your domain for SPF, DKIM, and DMARC, walks you through fixing whatever's missing in minutes, and then monitors it so authentication never silently breaks. It's a core reason 87% of our senders' email lands in the primary inbox.

* Instant SPF, DKIM, and DMARC check on every connected domain
* Guided, copy-paste DNS fixes, no IT ticket and no guesswork
* Continuous monitoring with alerts the moment auth breaks
* Aligned authentication that helps drive 87% primary-inbox placement

[Start your $1 trial](https://app.firstsales.io)[See Pricing](/pricing/)

$1 for 3 days · Cancel anytime · No DNS expertise required

Trusted by founders & sales teams

app.firstsales.io

![FirstSales email authentication status screen showing SPF, DKIM, and DMARC checks for a connected domain](/_next/image/?url=%2Fimages%2Femail-authentication%2Fhero.webp&w=3840&q=75)