For accepting payments we use stripe. Is there anything for sending payments? or sending bulk payments to multiple customers?

Can you elaborate on your scenario? Are you sending payments to customers or vendors?

If I have to send it for both of them then what should I use?

Send it WHERE? To a bank account? I'm still struggling to understand the scenario. Can you elaborate a bit so I (or other here) can help you out if possible?

Yes send to bank account vendor or customers will send payment details