Send email attachment to a contact via Wix email

Hi,

is it possible to send an email with an attachment to a contact using Velo API and Wix business email?

I want to customize the event ticket purchase experience but the checkout() or startPayment() API does not send the ticket to the related contact after the order is confirmed, Checkout() returns a link to the ticket PDF but emailContact() is not capable to add an attachment to the email. It is a pity that this is not supported by Wix.

I understand that sendGrid can be used but this requires an additional cost for the basic plan and sending emails via other providers probably requires to setup other staff to make sure these emails are not considered as spam by the contact mailbox.

Thanks.

Can you elaborate how? (the web site link does not work)