Based on the length of time an e-check generally takes, the earliest it might be applied to a vendor's account is on Thursday.
When an e-check is written, it has to be verified by the bank first. This process takes about 24 to 48 hours.
After verification, the bank can then send the funds to the vendor's account. This part of the transaction can take between 3 to 5 business days from the day the check was issued.
Considering the earliest time is 3 business days, an e-check written on Monday will reach a vendor's account three days later on a Thursday.
Find out more on online payments at https://brainly.com/question/1109723.