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Our Past Volumes


The Collaborator by CrossLetter #14

Oct 9, 2026

A plethora of cross-promotion opportunities

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The Collaborator by CrossLetter #13

Sep 25, 2026

The sponsorship paperwork nobody warns you about

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The Collaborator by CrossLetter #12

Sep 11, 2026

The vetting checklist for pitches that land in your inbox

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The Collaborator by CrossLetter #11

Aug 28, 2026

The email that keeps long-term sponsors

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The Collaborator by CrossLetter #10

Aug 14, 2026

Score every cross-promotion swap so you know exactly who's worth repeating.

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The Collaborator by CrossLetter #9

Jul 31, 2026

Building a media kit that actually sells

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The Collaborator by CrossLetter #8

Jul 17, 2026

Expanding cross-promotion beyond newsletters

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The Collaborator by CrossLetter #7

Jul 3, 2026

Finding the "right" sponsorship model

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The Collaborator by CrossLetter #6

Jun 19, 2026

Avoiding a cross-promotion flop

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The Collaborator by CrossLetter #5

Jun 5, 2026

What sponsors actually look for

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