Create and Send Email outside of Hubspot but track its opening through HS?


Is this possible, the way I understood is, I must use SMTP API to send the prepared email to HS SMTP first and then HS would add a tracking piece and send it along to the intended recipient.

Then ping HS with email event api to see if itreceives the email opening receipt or not yet.

And, without ‘Transactional email add-on’ its not possible to use SMTP API?

is my understanding correct, please?


Hi @sonu,

That’s correct; the SMTP API requires the transaction email add on. More details on the SMTP API and the transactional email add on can be found below: