How to export Telegram channel subscribers — and what to do since you can't directly
Straight up: the subscriber list of someone else's broadcast channel isn't exposed to anyone — not bots, not services, not Telethon scripts. Anyone promising to 'export any channel's subscribers' is selling stale leaked bases or lying. But the task 'get a channel's audience' is solvable with legal workarounds — here are all three.
Why channel subscribers can't be exported
Technically: a broadcast channel's subscriber list is visible only to its admins. Neither the Bot API nor MTProto exposes it to third parties in any form. It's not a limitation of a specific service — it's Telegram's architecture.
Workaround 1. Channel commenters — the most engaged audience
If discussions are enabled, the channel has a linked chat — and chat members can be collected. The commenters parser exports all comment authors for a period: the liveliest slice of the channel's audience. Excel export with @usernames and bot filtering.
Workaround 2. Niche chats — the same audience, open lists
A marketing channel's audience also sits in marketing chats. Find niche chats by keywords and collect their members or 'active in 30 days' — the same target audience, but the lists are open.
Workaround 3. Your own channel — via admin rights
You see your own subscribers in the Telegram admin panel, but there's no file export. The practical route: link a discussion chat and collect commenters — you'll get your active core as an Excel list.