Twitter has not yet specified what the daily DM limits will be, and the move hasn’t been received well by both verified and unverified users.
Source: https://cointelegraph.com/news/twitter-to-introduce-daily-limits-on-dms-for-unverified-accounts
Twitter to impose daily limits on DMs for unverified accounts, citing an effort to ‘reduce spam’
July 22, 2023
CoinTelegraph