Attach multiple HTTP "Get a File" downloads to a Gmail message

[H4rd]

Using the iterator function, I successfully obtained multiple links to download the images. HTTP "Get a File" downloads the images, and logically, using Array Aggregator should group these downloads together for attachment to the email.

As a result, only one image is being attached.

I tried using Archive "Create an Archive" to compress the downloads into a ZIP file, but the result was that it sent 4 identical emails, each containing a different file.

If someone could explain how to attach multiple downloads into a single email, it would be very helpful. Thanks for your assistance.

[samliew]

Your Source Module of the Archive should be set to the Iterator.

Setting the Correct Aggregator Source

You need to set the “Source Module” field of the aggregator to where the bundles are coming from. This is usually an Iterator module, but can also be a search/list/repeater module.

For more information, please refer to the Make Academy.

Combining Bundles Using Aggregators

Every result (item/record) from trigger/iterator/list/search/match modules will output a bundle. This can result in multiple bundles, which then trigger multiple operations in future modules (one operation per bundle). To “combine” multiple bundles into a single variable, you’ll need to use an aggregator of some sort.

Aggregators are modules that accumulate multiple bundles into one single bundle. An example of a commonly-used aggregator module is the Array aggregator module. The next popular aggregator is the Text Aggregator which is very flexible and can apply to many use-cases like building of JSON, CSV, HTML.

You can find out more about the other types of aggregator modules here:

• Array aggregator
• Text aggregator
• Numeric aggregator
• Table aggregator
• JSON aggregator
• CSV aggregator
• Archive (ZIP) aggregator
• other app-specific aggregators

Mapping a Specific Structure Into a Complex Field

The Array Aggregator module is very powerful because it allows you to build a complex array of collections for a later module’s field to map multiple items (collections) to it.

This is done using the “Target structure type” field in an Array Aggregator module.

Here is an example:

As you can see, the “Map” toggle on complex fields are used when you have an array. You can easily build an array variable to map to a future module’s field, by using an Array Aggregator module and select the “Target Structure Type” as the future module’s field you have mapped the array into.

Example

Here is an example of how your scenario could look:

This is just an example. Your final solution may or may not look like this depending on your requirements and actual input data.

Hope this helps! Let me know if there are any further questions or issues.

— @samliew

P.S.: Investing some effort into the Make Academy will save you lots of time and frustration using Make.

[H4rd]

Thank you for your help! It worked, the issue was with the Array Aggregator, where it was necessary to specify that the files should be attached to Gmail using the Array structure.