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Re: Adding a list-unsubscribe header

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Phillip_Wild
Level 10

Does anyone know the syntax for adding a list-unsubscibe header in the raw HTML of an email? I'm reading more and more about why this is important, but I can't seem to find directions on what the code should be.

Thanks in advance.

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SanfordWhiteman
Level 10 - Community Moderator

Marketo already includes an X-List-Unsubscribe header.  This is not anything you need to deal with.

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11 REPLIES 11
Kiersti_Esparz1
Level 7

I can confirm that Marketo does employ the List-Unsubscribe header for email sent from our network.

The List-unsubscribe header is text located within an email header, generally unseen by the recipient, that email senders can include to provide a safe way to safely unsubscribe. Over the years email recipients have been trained to not trust links in unfamiliar email, this makes someone less willing to unsubscribe from commercial email and instead they are more likely to complain.  By leveraging the List-unsubscribe header this allows the email provider, like Gmail or Outlook.com, to display a trusted Unsubscribe link for email recipients to use.  This benefits senders by keeping complaint rates lower.

Marketo uses the mailto: functionality required by Outlook.com and also used by Gmail/Google.

[5:26]

https://blog.returnpath.com/evolution-of-list-unsubscribe/

Kiersti Esparza
SanfordWhiteman
Level 10 - Community Moderator

Marketo already includes an X-List-Unsubscribe header.  This is not anything you need to deal with.

Jared_Eliason1
Level 2

Why, when I sent a test email to https://www.mail-tester.com, did I get following then?mailtester-noListUnsubHeader.PNG 

Unsubscribe is using {{system.unsubscribeLink}} where format of link is https://pages.domain.com/UnsubscribePage.html?mkt_unsubscribe=1&mkt_tok=123abc (is having link that formats like this all that's required to satisfy List-Unsubscribe header requirement? if so, when why is Mail Tester not seeing this?)

SanfordWhiteman
Level 10 - Community Moderator

Send a real email.

Jared_Eliason1
Level 2

Easy enough, cheers

Phillip_Wild
Level 10

I've been incorrectly informed Sanford - it seems that Marketo does include the header as you described. Support told me that they didn't..strange! But I doubled checked in my own Gmail and you're right, it's there. Thanks!

SanfordWhiteman
Level 10 - Community Moderator

If you could mark as the Correct Answer that would help future searches.

Dory_Viscoglio
Level 10

I've got you covered, Sanford

Grégoire_Miche2
Level 10

Hi Phil,

something in the line of:

  <p>This email was sent to {{lead.Email Address}}. If you no longer wish to receive these emails you may <a href="{{system.unsubscribeLink}}">unsubscribe</a> at any time.</p>

-Greg

Phillip_Wild
Level 10

Hi Gregoire

We already have a standard unsubscribe in our email, but it's my understanding that you can place another bit of code in the <head> of the  HTML which gives Gmail and other ISPs the ability to place an unsubscribe in the top of the email, as part of the core Gmail functionality. In turn, they are more likely to trust your email and increase inbox placement once this is done.

Any ideas?

Grégoire_Miche2
Level 10

Hi Phil,

Interesting reading here: Bulk Senders Guidelines - Gmail Help

and here: https://nation.marketo.com/external-link.jspa?url=http%3A%2F%2Fwww.list-unsubscribe.com%2F

I would only use these for B2C, though.

-Greg