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Mutual exclusivity stops your contacts from entering campaigns if they are already active in others, therefore stopping them from receiving too many emails from you.

For example, if your contact has received a cart abandonment email, you wouldn't want to send them a browse abandonment email an hour later.

Mutually exclusive campaigns are also useful if you have multiple stores and want to keep your communications with your contacts store-specific.

Campaigns can be mutually exclusive with as many other campaigns as you want.

Mutual exclusivity and testing

Test campaigns behave exactly like live campaigns, except they do not send to contacts. 

So, if you apply any of the mutual exclusivity methods listed on this page to a test campaign, it will potentially affect your live flows.

E.g. A contact could be excluded from a live campaign because they have been included in a test campaign.

Making your automation campaigns mutually exclusive

Create or edit an automation campaign as usual, and once you are happy with the flow, click Save.

Once you've saved the campaign, you'll be able to access the Settings cog in the tool bar:

Click on the Settings cog to open the 'Edit Campaign Settings' window.

From the Mutual Exclusivity dropdown, choose the campaigns you wish to exclude your contacts from:

Select Save.

If a contact is already active in the campaigns you selected, they will not enter into this one. 

This will be reflected in the Settings for the campaigns you selected. 


The wait node in an automation campaign placed right after the trigger determines which campaign will be triggered first.

So if there are two mutually exclusive campaigns then the contacts will enter the campaign with the shortest wait time after the entry event.

For example, if you have two published campaigns: abandoned basket and abandoned browse, and the abandoned browse campaign has a two hour wait node after its trigger, while the abandoned basket has a  one hour wait node, the abandoned basket will be triggered first.

Wait Nodes

Wait nodes set immediately after the entry trigger will look for any contacts that fulfilled the trigger conditions within the specified wait time.

E.g. If you had a wait time of two hours after the entry trigger 'visited the website and viewed a product attribute', then this wait node will only enter contacts that performed the trigger (visited your website and viewed a product attribute) two hours ago.

Ometria checks for contacts matching trigger conditions on an hourly basis. 

If a wait node is placed after an email action, this is the length of time the contact stays in the flow after being sent the email (or other action):

For this reason, wait nodes following actions are also a useful way to 'hold' contacts in certain campaigns, e.g. for 24 hours, before they can enter another, helping to space out your sends.

Email settings

Finally, you can also insure against over-sending from the Email Settings screen. 

Go to: Settings > Email Settings 

Scroll down to the field ‘Maximum emails sent per 24 hours’ and enter 1 (or 2 at most).

This ensures that a contact can only receive 1 (or 2) emails from you in a 24 hour period.

Scroll down and select Save to finalise.