Email has scaled our ability to communicate with large groups, but has not equivalently scaled our ability to listen and respond. For example, emailing many people for feed- back requires either impersonal surveys or manual effort to hold many similar conversations. To scale personalized conversations, we introduce techniques that exploit similarities across conversations to recycle relevant parts of previous conversations. These techniques reduce the authoring burden, save senders' time, and maintain recipient engagement through personalized responses. We introduce MyriadHub, a mail client where users start conversations and then crowd workers extract underlying conversational patterns and rules to accelerate responses to future similar emails. In a within-subjects experiment comparing MyriadHub to existing mass email techniques, senders spent significantly less time planning events with MyriadHub. In a second experiment comparing MyriadHub to a standard email survey, MyriadHub doubled the recipients' response rate and tripled the number of words in their responses.

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Easily respond to hundreds of recipients in Gmail with email templates. Organize contacts in spreadsheets.

Untangle and respond to complex Gmail threads with hundreds of recipients. Mail merge, track who opened your emails, embed animated GIFs right from your Gmail inbox.

MyriadHub helps you send email templates to multiple people. Each recipient gets a personalized 1-on-1 message and MyriadHub groups conversations by recipient as a spreadsheet.

This spreadsheet helps you keep track of incoming responses but also, filter and follow up with sub-groups of recipients. Simply filter for the values you want and compose a message and mailmerge.

Each recipient's spreadsheet data are also conveniently placed right next to your conversation with them. To extract more data, simply select the text while reading an email and click on the menu that appears. The data can be used in your template responses through placeholders. Templates can be reused to save time.

This is not yet another mail merge program, it is a simple and more effective way to email merge in Gmail, using Google Spreadsheets directly embedded into your Gmail inbox.