Useful caps to remember:

Limit	Typical value
Message text	500 characters
Broadcast text	500 characters
Message cooldown	A few seconds per recipient
Nickname	32 characters (plain text; markup stripped)
Symbol ticker (price alert)	20 characters
Spotlight max display	About 4–60 seconds, default 30; after audio ends, ~2s hold then ~1s fade
Important ambient (opt-in)	Free 5 / Personal 15 / Power 40 / Creator 100 per UTC day
Important silence	About 20 minutes default after ambient speech (play receipt + live push)
Quiet hours live speech	Only interrupt priority; whisper / normal / urgent wait
Sponsored channel post	Creator plan; 100 + 2×live credits (quote at send)
React preview display	Initial ~3–120s (default 10); after each reaction ~5–120s (default 30)
Reactions	One emoji per person per message/broadcast (changeable); short rate limit
Webhook message	500 characters
Webhook signature window	About 5 minutes
Missed announcements	Stay unread in Messages for manual replay
Broadcast throttle	Minutes per community (shorter on higher plans)
Tracked token projects	Free 1 · Personal 3 · Power 10 · Creator 25
X account subscriptions	Free 5 · Personal 20 · Power 50 · Creator 100
X Group subscriptions	Free 0 · Personal 1 · Power 3 · Creator 50
Personal reminders	Up to 50 per account (active + paused); recurring cadence at least 5 minutes
Gmail watches	Free 0 · paid plans 15
Wallet watches	Free 0 · Personal 5 · Power 8 · Creator 20
Wallet activity min size	$100 floor (platform; cannot go lower)
Webhooks	Free 1 · higher on paid plans
Channel follower caps	Free 100 · Personal 500 · Power 2,500 · Creator 10,000
Credits included	Free 500 once · Personal 500/mo · Power 1,100/mo · Creator 3,000/mo
Telegram channel voice/audio passthrough	About 60 seconds max

Exact plan allowances for messages, included credits, alerts, tracked projects, wallet watches, and webhooks are always shown on Premium.