The Contacts panel of your WeTransfer account will allow you to save your recipients' details for ease of use in the future.
To add a contact, click the 'Add Contact' button. To edit an entry in the contacts, open up your Contacts panel, hover over your contact of choice, and choose 'Edit'. To delete someone from your contacts, do the same, and choose 'Delete'.
Once someone is in your Contact list, typing their name, email address, or domain name into the ‘Email to’ field, we’ll suggest them as a recipient for that transfer.