If your emails are not reaching your customers, your "From" address may be the cause. Using a free email address — such as a Gmail, Yahoo, or AOL address — as your sender address in Keap™ causes your emails to be rejected by major inbox providers before they ever reach your customers. This is not a platform limitation — it is the result of a global email authentication standard called DMARC, and it affects every business sending email through a third-party platform. This article explains why free email addresses cause rejection, who is affected, and the steps required to fix the issue permanently.

Why Your "From" Address Determines Whether Your Emails Reach the Inbox

Your emails are only as effective as their ability to reach the inbox. The "From" address you use in your email campaigns is not just a display name — it is a critical piece of authentication information that receiving mail servers use to decide whether your email is legitimate. When that address uses a free email provider like Gmail, Yahoo, or AOL, major inbox providers will reject your messages outright, before they ever reach your customers.

Every email you send through Keap's™ automation builder — including broadcasts, automated sequences, and campaign emails — must use a "From" address on a business domain you own. A business domain is a custom web address registered to your business, such as tomscleaning.com, used to create a professional email address like yourname@yourbusiness.com. Using a business domain email address as your "From" address is what allows your emails to pass authentication checks and reach your customers' inboxes.

Why Free Email Addresses Get Rejected — How DMARC Works

DMARC (Domain-based Message Authentication, Reporting, and Conformance) is a global email authentication standard that lets domain owners control who is allowed to send email on their behalf. Gmail, Yahoo, and AOL have all published strict DMARC policies that instruct receiving mail servers to reject any message that claims to come from their domain but was actually sent from a third-party server.

When you send an email through Keap's™ automation builder using a Gmail, Yahoo, or AOL address in the "From" field, the receiving mail server checks whether that message actually came from Google's, Yahoo's, or AOL's servers. It did not — it came from Keap's™ mail servers. The receiving server then rejects the message based on the free email provider's DMARC policy. The email never reaches your customer, and in most cases neither you nor the customer receives a notification that the rejection occurred.

This is not a limitation specific to Keap™. Any third-party email platform will encounter the same DMARC rejection when a free email address is used as the sender. DMARC is a global email standard, and free email providers continue to enforce it more strictly over time. The only way to avoid DMARC rejection is to send from an email address on a domain you own and control.

Who Is Affected by This Issue

This issue affects any Keap™ account that has a free email address set as the "From" address on email broadcasts, automated emails, or campaign emails sent through the automation builder. If your "From" address ends in @gmail.com, @yahoo.com, @aol.com, or any other free email provider domain, your outgoing emails are being rejected by major inbox providers — including Gmail, Yahoo, and Outlook — before they reach your recipients. The rejection happens silently in most cases, meaning your send reports may show the email as sent even though it was never delivered to the inbox.

To check whether your account is affected, review the "From" address set on each of your active email broadcasts, automated email sequences, and campaign emails in the automation builder. If any of them use a free email address, those emails are subject to DMARC rejection.

How to Fix This — Purchase a Business Domain and Update Your From Address

The only resolution is to replace your free email address with an email address on a business domain you own. A business domain is a custom web address registered to your business — for example, tomscleaning.com — used to create a professional sender address like tom@tomscleaning.com. Once your "From" address uses a business domain, your emails will pass DMARC authentication and will no longer be rejected at the receiving server.

Complete the following three steps to resolve the issue:

1. Purchase a business domain from a domain registrar. If you use Google Workspace, you can set up a custom business email address through Google Workspace. Other popular domain registrars include GoDaddy, Namecheap, and your web hosting provider. Choose a domain that matches your business name so your email address looks professional to recipients.

2. Create a business email address on that domain — for example, yourname@yourbusiness.com. Your domain registrar or email hosting provider will have instructions for creating email addresses on your domain.

3. Authenticate your business domain in Keap™ and update the "From" field in every email, broadcast, and automated sequence in your account to use the new business email address. Domain authentication must be completed before your business email address will appear as an available option in the "From" dropdown. For step-by-step instructions on authenticating your domain, see Authenticate Your Domain in Keap™ to Protect Email Deliverability.

Frequently Asked Questions

What does this article cover?
This article covers why free email addresses cause DMARC rejection when used as a "From" address in Keap™, who is affected, and the three steps required to resolve the issue by purchasing a business domain and authenticating it in Keap™. This article does not cover DKIM setup, SPF record configuration, or general email deliverability troubleshooting beyond the DMARC rejection issue. To authenticate your domain, see Authenticate Your Domain in Keap™ to Protect Email Deliverability. To set up SPF records, see How to Set Up an SPF Record for Keap™.

Why don't I see my business email address in the "From" dropdown?
The "From" dropdown only displays email addresses that have been authenticated on your Keap™ account. To add your business domain email address as an option in the dropdown, click Settings in the left-hand navigation, then click Domains. From the Domains page, complete the domain authentication process for your business email address. Once authentication is complete, your business email address will appear as an available option in the "From" dropdown. For step-by-step instructions, see Authenticate Your Domain in Keap™ to Protect Email Deliverability.

Will changing my "From" address fix emails that have already been rejected?
No. Emails that were already rejected cannot be recovered. Once you update your "From" address to a business domain and complete domain authentication, new emails sent from that address will no longer be rejected due to DMARC policy failures. Only emails sent after the fix is in place will benefit from the change.

Does this only affect email broadcasts, or does it affect automated emails too?
This affects all outgoing emails sent through Keap's™ automation builder — including broadcasts, automated sequences, and individual emails triggered by automations. Any email using a free email address in the "From" field is subject to DMARC rejection regardless of the email type.

Is this a problem specific to Keap™?
No. DMARC is a global email authentication standard enforced by free email providers including Gmail, Yahoo, and AOL. Any third-party email platform will encounter the same rejection when a free email address is used as the sender. Switching to a different email platform will not resolve the issue — the only resolution is to use a business email address on a domain you own as your "From" address.

How much does a business domain cost?
Business domain pricing varies by registrar and domain name. Most .com domains cost between $10 and $20 per year through major registrars. Email hosting — which allows you to create email addresses on your domain — is typically an additional cost and varies by provider. If you use Google Workspace, Google offers combined domain registration and business email hosting. Contact your preferred domain registrar for current pricing.