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Mail2Cloud
Mail2Cloud is an application for Chrome. It manages attachment, schedule emails, privately share files, use reply timeout and get read receipts and reminders. See "read receipts" (when the email is opened), as well as when users click any links you sent or view any files you attach. Email reminder : can't deal with an email right now but don't want it to be buried and forgotten? Set an email to automatically reappear in your inbox after a certain amount of time. Reply Time Out: be notified if a particular email doesn't get a response... great for keeping track of important messages that require follow up! Freemium: free for up to 10 uses per month
http://chrome.google.com/webstore/detail/mail2cloud-for-chrome-rev/ijhapcklhkanndjbdnhichfmolhiaekg -
Boomerang
Schedule an email to be sent later. Easy email reminders. Boomerang for Gmail lets you take control of when you send and receive email messages.
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Top Inbox
Schedule emails to be sent later, set inbox reminders, and see if your emails get opened.
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Freemapping
Free map tool is an online resource that helps you to measure, search and overlay elements on maps for a wide range of applications.