From their website ...
Each individual INTERAC e-Transfer® must be for a minimum of $0.01 and a maximum of $3,000. The limits for sending INTERAC e-Transfers® are as follows:
For any 24-hour period, a maximum of $3,000 may be sent
For any 7-day period, a maximum of $10,000 may be sent
For any 30-day period, a maximum of $30,000 may be sent
Subject to these $ maximums, you can make as many Interac e-transfers as you like ... all FREE!