1. Log in to your MoEngage dashboard.
2. Navigate to Settings > Channels > Email settings > Sender Configuration tab.
3. Click the email connector.
4. Click the ellipsis icon and click Edit.
5. Under One-click unsubscribe, click Self Managed.

1. One-click unsubscribe URL: Provide a link that directly unsubscribes the user with a click. Make sure to add the parameters using JINJA to this URL to identify the unsubscribing user and act accordingly. Also, ensure that this link directly unsubscribes the user without redirection or requiring a landing page for further input or confirmation.
   Note that if the added identifier contains special characters like ”@”, standard URL encoding applies. For more information, refer here.
   For example, if the provided link is https://www.abc.com/unsubscribe?emailAddress={{UserAttribute['Email (Standard)']|default('email')}} ,then, along with this, a parameter from Moengage will be added to the HTTPS section of the email header, which then looks like this:
   https://www.abc.com/[email protected]&qmoe=abc123 Here,

• https://www.abc.com/unsubscribe?emailAddress is the URL that you have entered within One-click unsubscribe URL & emailAddress is the parameter used to identify your users to manage preferences.
• [email protected] is the value of the Jinja provided as the value for the parameter
• The qmoe is the parameter MoEngage appends to the URL to identify the user & the campaign from which this request originated.

2. One-click unsubscribe email: Provide an email ID to be added to the mail-to section of the email header.
   When you provide an email ID, the User Identifier field appears for identification purposes. MoEngage customizes the email’s subject line, sent from the ISP, to include this information in Base64-encrypted format. This allows you to parse the subject line, decode it, and securely identify the user who needs to be unsubscribed.
   The value for the User identifier depends on how you identify your users. Examples of values that you can use are below. You must add these using Jinja, the templating language used by MoEngage:

   User Identifier Example	JINJA Format
   ID	{{UserAttribute[‘ID’]|default(‘ID’)}}
   Email ID	{{UserAttribute[‘Email (Standard)’] | default(‘email’)}}

​

How to process the received request?

• If the request was handled by the ISP through the One-click URL:

1. Identify the unsubscribing user using the parameters you added. In our above example provided, the _emailAddress_parameter should help you identify the user and process the same.
2. Execute the following public API by passing the qmoe parameter to help MoEngage update the subscription status of the user:

https://api-0x.moengage.com/v1/emailunsubscribe?qmoe=

• The ‘X’ in the API Endpoint URL refers to the MoEngage Data Center (DC). MoEngage hosts each customer in a different DC. You can find your DC number (value of X) and replace the value of ‘X’ in the URL by referring to the DC and API endpoint mapping here.
• <qmoe_parameter>, as mentioned above, is a parameter that will be appended to the URL by MoEngage to identify the user & the campaign. In the above example, qmoe_parameter is abc123.
• If the request was handled by the ISP through the Mail-to Approach:

1. Parse the subject line of the email sent by the ISP to the inbox you mentioned to identify the user and unsubscribe them from the list you manage. A sample subject line would look like below:

Unsubscribe | cattr:YzlhZjVkYzUtYWRkMi00MTZkLTg4OTQtNWNlZmRkYTJjNDYw-WTRv4uSIgrZTVV5fJSvAZkS2smalAXvg8qX_0qz3AXdXNRHz.AwCwAo2OsppN0DGt2qd0R4qSg-5YLB5qTvuHp.2EIBfDrKmDauXjQXySNcGHo0w__OdsmU2_LAzK1aAynsczTVn.yuaRa.4MGgjQ-lq_KXmK.l7mgq17UL1WOZsjqPOJGzcrHTW3iZYOXt2O5Ikgwk9CJgO0Hg7Z8ZO3OewvzeED8BFN4fuAwyvkCV7yPQtHTMZ_coK_Yu42TPeysvhhgr0yFlLvrXIMsEolDk64xtNx8Ie76YcE

• In the subject line above, you must parse through to find the sub-text that’s between cattr: and the first hyphen; that is, in this example, the sub-text you’ll find is YzlhZjVkYzUtYWRkMi00MTZkLTg4OTQtNWNlZmRkYTJjNDYw.
• Then, decode this via the Base64 method to find the user who must be unsubscribed.

2. To help MoEngage update the subscription status of the user, forward the email to the inbox, [email protected].

• Here, the ‘X’ in the email ID refers to the MoEngage Data Center (DC). MoEngage hosts each customer in a different DC. You can find your DC number (value of X) and replace the value of ‘X’ in the URL by referring to the DC and API endpoint mapping here.
• You can always set up auto-forward of emails received in your inbox to make this easier. To set up the same, please refer below:
  • Yahoo
  • Microsoft
  • Gmail