Did you know you can subscribe to maximum of 75 YouTube channels per day and you can subscribe up to 2000 channels in total?
Also if you have an older YouTube channel, if you have many subscribers, these limits increases.
Why these measurements?
Well, Youtube is dealing with alot of hackers, and to limit their damage such as sub4sub, youtube Like bot, youtube comments bot, youtube views bot into the network they implemented these limits for subscriptions.
Check my YouTube channel.
Source
Also if you have an older YouTube channel, if you have many subscribers, these limits increases.
Why these measurements?
Well, Youtube is dealing with alot of hackers, and to limit their damage such as sub4sub, youtube Like bot, youtube comments bot, youtube views bot into the network they implemented these limits for subscriptions.
Check my YouTube channel.
Source