How to Migrate Your Agency to Sparkforge Email

By Sparkforge Support Team ·Last reviewed May 3, 2026

Sparkforge Email lets agencies send and receive email out of the box without Mailgun or third-party SMTP. Migrate from Agency Settings, then remove existing SMTP integrations on each sub-account.

Sparkforge Email is the built-in sending stack for your agency and every sub-account. New agencies are on it by default. Existing accounts using Mailgun or another SMTP provider can migrate in a few steps.

What Sparkforge Email gives you

Email sending and receiving works on every sub-account with no third-party signup, no DNS juggling outside the platform, and no separate billing.

How to migrate your agency

Open Agency Settings > Email Services.
Click Use LC - Email if the button is available.
Select Sparkforge as the default provider and follow the prompts.

Clicking the button does not affect sub-accounts that already have SMTP or Mailgun configured. New accounts created after this point automatically use Sparkforge Email unless you wire up SMTP.

Remove an existing SMTP integration on a sub-account

Set Sparkforge as the default provider.
Open the existing SMTP or Gmail integration.
Click the trash icon to remove it.

Common error: domain already configured

If you see This domain is already configured inside a Mailgun account, log into Mailgun and delete the domain there before re-adding it in Sparkforge. Open a support request if you believe the domain should already be removed.

Confirm you are on Sparkforge Email

Send a test email and check the sending domain. If it matches one of these, you are migrated:

mg.msgsndr.org
mg.msgsndr.net
replies001.msgsndr.com
replies.msgsndr.com
replies000.msgsndr.com
ec1.msgsndr.org
ec1.msgsndr.net

Frequently Asked Questions

Do I need a Mailgun account to use Sparkforge Email?

No. Sparkforge Email is built in. New agencies use it by default and existing agencies can migrate from Agency Settings.

Will switching break my sub-accounts already on Mailgun or SMTP?

No. Clicking Use LC - Email only changes the default for new sub-accounts. Existing sub-accounts keep their current setup until you remove the SMTP integration manually.

How do I know my sub-account is using Sparkforge Email?

Check the sending domain on a test email. If it ends in msgsndr.org, msgsndr.net, or msgsndr.com on the published list, you are migrated.

What if my domain is already in a Mailgun account?

Log into Mailgun and remove the domain there, then add it again in Sparkforge. Submit a support request if Mailgun cannot release it.