Find if a Collection Contains a specific collection

[Prickop]

Hello there,

I’m struggling with that since 2 days. I want to use Brevo and create List only if my List doesnt exist.

So I created a Variable call “ListOfTheDay” with the value = now. (date of the day)

So, I want to have a list for every day but I don’t want to create a new list if I already have this list created. (Yes my scenario will be call multiple times a day).

So, I get all list from brevo (7 lists) onto multiple Collection.

I want to check every List or check if a List with the Name = now, if yes get the List ID if not create new list.

I tried multiples way : formula, iterator… Not able to do it

You guys can help me please ?

[samliew]

Welcome to the Make community!

@Prickop

I tried multiples way : formula, iterator… Not able to do it

You have not yet provided sufficient information to demonstrate the problem that would allow us to reproduce the scenario and any error(s).

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[Prickop]

Hi thanks for your help

Here is what you need :

[
    {
        "nameOfList": "Concours HEC"
    }
]

[
    {
        "id": 28,
        "name": "Contacts impliqués dans les conversations",
        "folderId": 27,
        "uniqueSubscribers": 1,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 1
    },
    {
        "id": 25,
        "name": "identified_contacts",
        "folderId": 24,
        "uniqueSubscribers": 0,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 2
    },
    {
        "id": 24,
        "name": "List Booking : 2025-04-21 - lancé le : 11/05/2025",
        "folderId": 1,
        "uniqueSubscribers": 2,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 3
    },
    {
        "id": 9,
        "name": "Concours HEC",
        "folderId": 1,
        "uniqueSubscribers": 35,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 4
    },
    {
        "id": 8,
        "name": "Gagnant concours EN",
        "folderId": 6,
        "uniqueSubscribers": 53,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 5
    },
    {
        "id": 7,
        "name": "Gagnant concours FR",
        "folderId": 6,
        "uniqueSubscribers": 106,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 6
    },
    {
        "id": 5,
        "name": "FromDoudou",
        "folderId": 1,
        "uniqueSubscribers": 300,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 7
    },
    {
        "id": 4,
        "name": "ConcoursStValentin",
        "folderId": 1,
        "uniqueSubscribers": 297,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 8
    },
    {
        "id": 3,
        "name": "old-rdv",
        "folderId": 1,
        "uniqueSubscribers": 0,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 9
    },
    {
        "id": 2,
        "name": "Votre première liste",
        "folderId": 1,
        "uniqueSubscribers": 0,
        "totalBlacklisted": 0,
        "totalSubscribers": 0,
        "__IMTLENGTH__": 10,
        "__IMTINDEX__": 10
    }
]

[
    {
        "hasList": [
            null,
            null,
            null,
            null,
            null,
            null,
            null,
            null
        ]
    }
]

blueprint.json (5.4 KB)

[Jonathan_Escobar]

This one uses 4 operations per run max, Just make sure there are not 2 list with the same name on your account because it will break
Change the timezone of the “Create a List” module to your timezone, look for your’s here
{{formatDate(now; “YYYY-MM-DDTHH:mmZ”; “America/Argentina/Buenos_Aires”)}}

1. List all Brevo List
2. Transforms all invalid dates (like text) to 30/12/1999, then compare the list name to the now variable with the date format DD/MM/YYYY.If there is a list with the same date as today then makes a JSON string with the List Data, if not, then makes an empty string.
3. The Router has 2 routes with one filter on top. The filter checks if the Text Aggregator text contains “List ID”. If it does, it passes; otherwise, it goes to the fallback route.
4. In the top route the JSON string transforms to a collection, with the Parse JSON module. The “Get a List” gets all the data of the list
5. The fallback route creates a new list
   I think it works fine
   Bravo List.json (12.3 KB)