HACKER Q&A
📣 RileyJames

Email sent via work email (Outlook) replied to personal Gmail


Has anyone seen this happen before? Or can explain why?

I sent an email to a client. From my work email address, setup via Outlook.

The client responded, to my personal email address, which is an @gmail.com address.

I have never emailed this client prior to this, from either address.

The clients’ address is an @gmail address.


  👤 jtthe13 Accepted Answer ✓
Occam's razor attempt at explaining this. You are connected on LinkedIn, your client got your gmail from your LinkedIn profile, and now the gmail address is set in the "primary" field of their contact card for you.

My 2 cents, without having any more context than what you described.

There are more elaborate/automated versions of what I described in B2B marketing (like auto update of CRMs based on LinkedIn data). Pretty standard stuff.

I tend to stay connected with business acquaintances when they are in between jobs, and in those periods, i keep their publicly given Gmail on file to engage with them. I try to update with new pro addresses when they find a new gig, but the update is not always systematic.


👤 danparsonson
Is it possible your client got hold of your personal address indirectly somehow - via a mailing list or something? Maybe in the course of replying, they removed your Outlook address by mistake and then in retyping it, GMail suggested your personal address? Clutching at straws I know...

👤 bombcar
Is your gmail setup with your same outlook client?

Is your gmail available "on the web"?

Did you set a reply-to:?


👤 hericium
Was your original message sent with Reply-To header?

Does the reply have In-Reply-To header matching Message-ID of your original message? If you're unable to see Message-ID of messages sent, does the domain part in In-Reply-To header match your work or private address?


👤 ihatepython
Just look at the email headers to see which email it was sent from or if there was a reply-to.

👤 cowvin
Where is your personal gmail available on the internet? Maybe it's on your resume and the person checked out your resume before responding to you?

👤 beardyw
Most likely is they know you and have your email. I would just ask them.