Growing a small Telegram channel for free
What works without a budget: post swaps with channels of similar size and topic, links from your other platforms, a consistent posting time, and a pinned "what this channel is about" post.
Disclosure: I'm on the Trigram team (trigram.site). Trigram runs free post swaps between channels: the bot publishes both posts and checks they stay up. Trigram Lens is a free Chrome extension that shows public channel stats.
Guide: trigram.site/en/grow-telegram-…
Lens: trigram.site/en/lens