Release 6.8.19 - mini release - 2024 May


1.0 Campaign Manager module enhancements

1.1 Compliance with new ‘single-click unsubscribe’ guidelines from Gmail & Yahoo Mail

From June 2024, Google’s Gmail and Yahoo’s Mail services will begin to enforce the following
guidelines for ‘bulk-senders’ who send more than 5,000 emails per day:

  1. DMARC authentication
  2. One-click unsubscribe in marketing messages

All our clients are already compliant regarding the 1st requirement about DMARC authentication.

In this release, we are implementing the changes to help clients be compliant with the 2nd requirement for ‘one-click unsubscribe’. These are technical ‘behind-the-scene’ changes in the email headers (that are sent along with the actual email content).

These changes are transparent to you. You do not need to change anything in the way you configure your email campaigns and deployments within Webex Campaign.

The only visible change your email recipients will slowly notice over the next few weeks is that more of your emails will have an ‘Unsubscribe’ link at the top of your emails when your email recipients open your emails in their Gmail and Yahoo-Mail inbox user interfaces.


When one of your email recipients clicks on this ‘list-unsubscribe’ button, Gmail will show them a pop-up asking them whether they want to unsubscribe.


If they click on the blue ‘Unsubscribe’ button on this pop-up, Gmail will automatically inform Webex Campaign and we will automatically add this email to our ‘Email channel opt-out list’.

You can view this opt-out list by logging into Webex Campaign and going to ‘Administration > Tenant Management > Opt-out management’.



After this email recipient is added to your ‘Email channel opt-out list’, Webex Campaign will automatically stop sending any future emails from you to this email address to ensure your compliance with the Gmail / Yahoo-mail mandated sender guidelines.

Please note that Gmail has its own algorithms by which it decides whether to show the ‘unsubscribe’ button at the top of the email next to the sender information. We have noticed that it does not always insert this ‘unsubscribe’ button in all emails, especially if the number of contacts in your target group is small.

However, please rest assured that with the changes we have implemented behind-the-scene in this release, you will be compliant with the Gmail/Yahoo-mail sender guidelines, even if you do not always see this unsubscribe link within the emails sent by you.

We recommend that you should continue to include your own ‘Unsubscribe’ link within the body of your emails anyway as a best practice. Most clients have included such a link near the bottom of the main body of their emails.

The ultimate objective of Gmail / Yahoo-mail in introducing these sender guidelines is to reduce spam complaints by giving email recipients an opt-out option that appears consistently in the same place on all messages from all the senders and making it easy to unsubscribe from unwanted emails.


2.0 Maintenance items in this release

The table below lists some of the notable smaller functional improvements, engineering improvements, bug fixes, and fixes for production incidents/problem tickets are included in this release.

# ModuleChange Type Description
1EngineeringImprovedImproved the performance of the email channel interface sender [CMPN18936].
2EngineeringImprovedUpgraded the email channel interface integration with AWS-SES to SDK
v2 for batch routers [CMPN-20203]
3EngineeringFixedFixed a bug, which under certain conditions, was causing email template
creation to fail within AWS-SES [PRB0010009 / CMPN-18586]

3.0 Need more information?

Please contact your Cisco Webex client representative if you have questions or would like access to a new feature.

Cisco Webex technical support team can be contacted at any time by phone or email: