---
schema_version: "1"
id: 6a0f58703469eeda445036cbf4cc3dfcc784610b9881e586ea9457e631654de2
title: Verify Your Email-Sending Domain for Trialforce Branded Email Sets
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/release-notes/262-0-0/rn_appexchange_trialforce_verify_email_domain.md
canonical_url: https://help.salesforce.com/s/articleView?id=release-notes.rn_appexchange_trialforce_verify_email_domain.htm&release=262.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: a2c884a9259ffc579669b402aa09d90fbdea3362904ce7c89b51acd741e238db
description: Starting July 18, 2026, you must have a verified email-sending domain in order to publish a new Trialforce branded email set. If you have existing branded email sets, verify your email-sending domains before November 10, 2026 to continue sending system welcome emails from your custom branded email addresses. This requirement ensures compliance with a Salesforce security enhancement for outbound email.
products:
  - Cross Cloud
release: "262"
---
# Verify Your Email-Sending Domain for Trialforce Branded Email Sets

Starting July 18, 2026, you must have a verified email-sending domain in order to publish a new Trialforce branded email set. If you have existing branded email sets, verify your email-sending domains before November 10, 2026 to continue sending system welcome emails from your custom branded email addresses. This requirement ensures compliance with a Salesforce security enhancement for outbound email.

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-release-notes-salesforce_release_notes-262-0-0-production-enus/e945111b-3e0a-4011-accc-d5949363bfcc/images/icon_note.png)

Note If you’ve previously set up a DKIM (DomainKeys Identified Mail) key or an authorized email domain for your email-sending domain, the associated branded email sets are automatically verified. You don’t need to take further action.

**Where:** This change applies to Trialforce branded email sets in your Trialforce management org (TMO). Trialforce branded email sets are available in Salesforce Classic in the Developer edition.

**When:** Starting July 18, 2026, you must use a verified email-sending domain to publish a new branded email set. Before November 10, 2026, you must verify the email-sending domains for your existing branded email sets.

**Why:** If you don’t verify email-sending domains by November 10, 2026, your existing branded email sets will send email from a substitute email address, similar to orgId@sf-customer-mail.com. Your email sets will use the substitute email address until the email-sending domain is verified.

**How:** In your TMO, verify each email-sending domain of your branded email sets. To verify an email-sending domain, you can either create a DKIM key or set up an authorized email domain.

#### See Also

- [Verify Your Email Domain Ownership](https://help.salesforce.com/s/articleView?id=release-notes.rn_sales_productivity_email_domain_verify.htm&release=262.0.0&type=5 "To avoid disruption in email sent from Salesforce, verify the domains that you own with a DomainKeys Identified Mail (DKIM) key or an authorized email domain. As part of our ongoing efforts to strengthen the security of our email services, email domain verification is now mandatory. Salesforce no longer delivers emails from unverified domains, even if the email address is verified.")
- [_Salesforce Help_: Determine How to Verify Your Email-Sending Domains](https://help.salesforce.com/s/articleView?id=xcloud.security_user_email_verification_domain_auth.htm&language=en_US)
- [_ISVforce Guide_: Create Branded Emails](https://developer.salesforce.com/docs/atlas.en-us.packagingGuide.meta/packagingGuide/trialforce_creating_branded_emails.htm)
- [_Knowledge Article:_ Spring ’26 Email-Sending Domain Verification Requirement](https://help.salesforce.com/s/articleView?id=005316090&type=1&language=en_US)