Indie Letters
Not a marketing but "growth" marketing newsletter for makers
Competitors & alternatives
GrowthHackList
100+ curated growth hacks for makers + early stage startups
GrowGetters
A newsletter about growth-hacking newsletters.
Indie Channels
Distribution channels and marketplaces for makers
tinyStore
The store builder for indie makers
The Grow Op
Non-fluffy growth marketing insights straight to your inbox