Blocking a Sender
Some e-mail providers have a system to block or blacklist specific senders. In most cases it's simply an easy-to-use front-end to a filter system: you provide an e-mail address and it builds a filter for you to auto-delete any messages from that sender. The exact same form of blocking is available in Gmail* except that you explicitly create the filter, which of course allows you more control over how it works and what it does with the messages. The down-side is it take more effort than just entering an e-mail address in some field.Typically you will simply want to delete the messages. But there may be a case where there is some personal or legal reason you need to save these "blocked" messages. In such a situation you might label the messages, archive them (so they are not in the Inbox), and mark them as read. This is an example of why having full control over the filter is important.
So to create a simple blocking filter, do the following:
- Go to Settings -> Filters
- Click the "Create a new filter" link towards the bottom of the page.
- Enter the sender's e-mail address in the From field
- Click the "Create filter with this search" link.
- Check the box for "Delete it".
and you have same optional steps in this are as,
- [optimal] Check the box for "Skip the Inbox (Archive it)".
- [optinal] Check the box for "Apply the label" and select one from the drop-down list.
- Check the box for "Send canned response" and select one from the drop-down list.
- [optional] Check the box for "Mark as read".
Note 2. the optional steps are basically to keep these messages out of your Inbox by placing them in a label of your choice. You can then decide to save them if needed, or every so often go and delete all the messages in that label.
Clearly this system isn't perfect. The biggest problem being that you can't delete the message and also send the canned response. Still, it's a reasonable work-around given that Gmail doesn't have the ability to bounce a messages. And it will satisfy the needs some users have to block a sender with a message so they know they are blocked.
Of course, as already mentioned, it may not fool a more knowledgeable e-mail user. But what can they do about it? If they send a message saying "I know it's fake" all they'll get is another failure report.
Summary
It's unfortunate that there are reasons why one may want or need to block a sender from e-mailing to your account. But fortunately Gmail provides the tools to keep such messages out of your Inbox. It may take some self-control to not look at them in Trash if the content may be disturbing. But they can be deleted permanently without opening.And the workaround for simulating a bounced error return is pretty easy to setup and use. It should work for most cases, and help provide one a level of protection from unwanted contact.