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Comment: Published by Scroll Versions from this space and version 9.1.1

Managing inactive recipients

Over time, recipients in your mailing lists can become inactive: i.e. recipients who no longer open or click on your emails for a given period of time. There are two ways to manage these inactive recipients:

  1. Create a re-engagement campaign and try to "win-back" those inactive recipients in your mailing lists. View this section on how to setup a re-engagement campaign.
  2. Setup the inactive recipient management section, covered below and introduced with MailUp 8.2.1 

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Using the Inactive recipients management features

The inactive recipient management section allows you to disengage those recipients who did not respond to your prior re-engagement campaign(s).

The advantage of disengaging (and ultimately unsubscribing) these inactive recipients is that you clean your mailing lists and improve your


Step 1: Reduce mailing frequency

Limiting the number of sent emails to inactive recipients increases the likelihood that they'll open one of your emails. The logic is that your recipients are more inclined to open your emails since there are fewer of them in the recipients' inbox.

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engagement metrics: this can have a positive impact on your deliverability, minimizing the chances that a low level of engagement may lead to your messages being delivered to the junk folder.

You have 3 options:

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  1. Keep this feature disabled. We don't recommend this. It's a good idea to manage inactive recipients.
  2. Attempt to re-engage (and then eventually unsubscribe). This is the recommended approach.
  3. Unsubscribe immediately.

Attempt to re-engage (and eventually unsubscribe)

This feature automatically sends the "Email to inactive recipients" (i.e. the ultimatum email with . If you are running a re-engagement campaign, this would be your "ultimatum email", the last email you send to try to re-engage these recipients. It should contain a clear call to action: , prompting your customers to either to remain in your mailing list or to unsubscribe). subscribed or unsubscribe.

What to do:

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Step 3: Unsubscribe recipient

Inactive recipients in this category will be unsubscribed. These recipients have had multiple opportunities to engage with your emails, however they have declined them all. There is no incentive for you to have these recipients in your mailing list and the system will automatically unsubscribe them. Having a cleaner (albeit smaller) mailing size will improve your engagement metrics, as shown in this case study by Marketing Sherpa.


  1. Set after how many months inactive recipients should receive a re-engagement email (email marketing best practices advise to wait 3 or 6 months). To modify the email message click on Edit or Preview. For more info view this sectionTypically, you can see a 3-5% increase in subscriber re-engagement. This is a low percentage because we're talking about an already inactive audience.



  2. Decide after how many days, after having received the previous message, the recipient should be unsubscribed (email marketing best practices advise to wait 30 or 90 days).

Unsubscribe immediately

Use this option if you simply want to unsubscribe recipients that have been inactive for a long time. This may or may not be used in conjunction with a re-engagement campaign (see: how to run a re-engagement campaign with MailUp).

What to do:

  1. Decide after how many months the recipient should be unsubscribed (email marketing best practices advise to wait 6 or 12 months).



Always run a simulation before starting a re-engagement campaign. This is an estimate of which recipients would be considered Inactive based on the settings you have configured.


The Inactive recipients' management uses for the re-engagement email the MailUp 1-to-many service.

That's why, if you are running a re-engagement campaign, you will have groups connected to automated emails sent based on the settings you have configured( e. g. 1-to-many-2014-06-02 12.00.00).