Reply to all mail under a label or filter in Gmail?

Question

Recently I've helped host a contest, during it several hundred email were sent to our gMail inbox.

Sorting through all of these emails to deliver replies individually would take forever, and we wouldn't be able to respond by our deadline. So I am wondering if there is any way to respond to everyone that has contacted us quickly.

I know this is possible through use of a macro in outlook (either by scraping the emails of everyone or sending a reply to each individual email but only once) but I don't currently have access to outlook so I wouldn't be capable of this.

If there is a way to do it with Windows Mail, Thunderbird, or the native mail application on a mac computer I would be open to that as well. But ideally, I would only like to use gmail.

Answer 1

Here's an idea:

1. Create another gmail account ("new account").
2. Add the old address to the new account so you can send mail from it.
3. Make it the default account.
4. Create an auto responder on the new account, which has the text you want to send to the users.
5. Create a rule on the new account which trashes all messages that shouldn't get this reply.
6. Set up the old account to read the mail from the old account via POP3.

As the mail is read in the new account, the ones that shouldn't receive a reply should be trashed and only the valid ones should go through (if this part doesn't work, you will need a 3rd account which forwards to the second based on a rule). Next, the mail that does go through should get auto replied via the auto responder, which should use your old account to reply.

Note: As you probably guessed, I haven't tried this. I would recommend trying it out first. Another problem that might happen is this new account might be revealed to the people getting the message via an "on behalf of message".

Answer 2

You can use Google Chrome, and install the batch-reply-for-gmail extension. Then you can display all emails for that label, select all mails, and hit the bulk "reply" button to reply to all of them in one go.

Answer 3

There is now a Chrome Extension Reply To Many** that allows you to Reply To Many emails at once while maintaining their individual threaded history. It works not by selecting individual emails but by applying a label to them, and it can use a variety of "responses" created as Drafts. (How to use)

This page is still for the now retired Gmail Gadget but it's still valid for the Chrome Extension. And yes, it was written by me.

Answer 4

I wrote a GMail Gadget that does that, see https://sites.google.com/site/replytomany/