You can make multiple payments to your mortgage* each month. However, funds will be held in suspense until the full monthly payment amount is received.
You can also make additional payments to your mortgage once the monthly amount due is satisfied. This can help reduce the number of months interest is charged and save you money over time.
See also: Do you have a way for me to estimate the funds I could save on my mortgage if I paid extra?
*Does not include construction loans.