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Not available. You cannot connect Meta to Senderz today. There is no Meta option on the Integrations page, no Meta sign in, and no way to link a segment to a Custom Audience. Nothing on this page describes something you can switch on.
Senderz has no Meta connector. Meta is not one of the platforms Senderz can connect to, and no part of the integration has been built: no sign in, no audience linking, no sync, no reporting. If an older version of this page, a comparison table or a sales deck told you Senderz syncs Meta Custom Audiences, that was wrong. Plan around the manual route below.

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What is planned

Meta Custom Audience sync is on the roadmap. It is not in the product and no release date is committed. The intended shape, if and when it is built:

Outbound only

Senderz would push audience membership to Meta and read nothing back. No Meta leads, ad events or conversions would flow into Senderz.

One segment, one audience

You would link a single Senderz segment to a single Meta Custom Audience. People who enter the segment join it, people who leave are removed.

Hashed identifiers

Members would be matched on hashed email and phone. Plain addresses and phone numbers would not leave Senderz.

Shared with Google

Meta would reuse the same audience foundation as Google Customer Match instead of a second, separate one.
Meta and Google prepare email and phone differently before hashing. Applying one platform’s rules to the other produces a technically valid hash that matches nobody, with no error message anywhere. That is why Meta needs its own work rather than a copy of the Google effort.

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What you can do today

You can move a segment into Meta by hand. Treat this as a one time snapshot, not a sync. It does not update when the segment changes, and you have to repeat it whenever you want the audience refreshed.
1

Build the segment

Create the audience you want under Segments. See Segments for the filter options.
2

Filter contacts by that segment

Open Contacts and apply the saved segment as a filter. The contact list now shows exactly the people you are about to export.
3

Choose columns and export

Click Export. In Choose columns to export, pick the fields Meta needs, normally email and phone. Senderz builds the CSV in the background and downloads it when it finishes. A large audience takes longer.
4

Upload in Meta Ads Manager

Create a Customer List audience in Meta Ads Manager and upload the file, following Meta’s own instructions for customer file audiences. Meta does the hashing and matching on its side.
The exported file contains customer email addresses and phone numbers. Upload it only to an advertising account you control, delete your local copy when you are finished, and confirm the upload is covered by your privacy policy and by the consent your contacts actually gave you.
Exporting contacts does not change anyone’s marketing consent in Senderz, and it does not subscribe or unsubscribe anybody. It is a read only snapshot.

Google Customer Match

The sibling ad audience integration. Also not available yet.

All integrations

What Senderz can connect to today.

Segments

Build the audience you want to export.

Contacts

Filtering, columns and exporting your contact list.