Notify contact about a spam email send out

In the past week I had two clients that a spam email was send out from their email to all their contacts. Thy wanted to notify all their contacts that this was a spam and not open or reply, just delete.

The simple way would be, sending out an email to all their contacts, but when google seas such kind of activity from one email sending out to this many email addresses it will mark it as spam or block it.

What I did, I export all contacts and was looking for a company that will not charge monthly since I don’t need a monthly plan [have no issue to pay on the project], most company’s I googled charge monthly at it’s designed for marketing project. I found a company which gives up to 2500 emails free. But 1- most email landed in spam 2- it’s difficult to use it for such type of task, it’s designed for marketing with lot of fields to fill out, make the work complicated and slows the process. And in  this case we need quick and simple action.

I am sure there is a quick and efficient way to handle such cases, any advice?
Abraham DeutschIT professionalAsked:
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David Johnson, CD, MVPOwnerCommented:
Sending an email saying don't open an email from me dated XXXX is too late.  The customers have already opened/replied or deleted the email.  you're effectively 'closing the barn door after the horse has gone'
Abraham DeutschIT professionalAuthor Commented:
Agree. But a lot of people when thy see a suspicious email thy call up to verify. And all this calls are time consuming and annoying
David Johnson, CD, MVPOwnerCommented:
Sure it is annoying and time consuming but perhaps in the future you will put in place measures that will prevent this from happening i.e. setting tighter send limits.
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No need for another company/subscription service.
Just use gmail in a more expected way, and divide your contacts into groups of 15. Might be a lot, but saves you that subscription you wanted to use.
Then send email to yourself, the 15 contacts in BCC, and you won't be marked as spam for sure.
Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
I would always use a 3rd party smtp service.  Sending bulk to or bcc is not a good idea.  

Check out send grid  Very inexpensive and you can go month to month. If you are having spam issues, I would just route all my email through the service.  Using the smtp service, you can send email via outlook or other client or their api or web site.

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Abraham DeutschIT professionalAuthor Commented:
Thank you
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