Archiving
Gmails best function (according to me) is definitely the Archiving feature. This allows you to mark an Email-message, as "not important enough to keep in the inbox, but not unimportant enough to delete", which just keeps a copy of your mail, but not in the inbox. That way you can keep a clean inbox, without losing any data. (When search, archived mail is automatically searched as well)Searching
The search-function of Gmail, is its strongest side to-date. The search function easily and quickly searches through several gigabytes of emails in a matter of microseconds. When using it together with some of its more special features, you can easily find almost any email ever sent or received, based on the few things you remember about it.Special Things
There are a few special search phrases that really can be useful. For example to find an email-message you wrote, with an attachment, sometime around december in 2007, the search-query would be "from:me has:attachment after:2007-11-30 before:2008-01-01". from:me # Mail is sent by you
has:attachment # The message has one or more attachments
after:<date> # The email was received/sent sometime after the specified date
before:<date> # The email was received/sent before the specified date
has:attachment # The message has one or more attachments
after:<date> # The email was received/sent sometime after the specified date
before:<date> # The email was received/sent before the specified date
Special search-tags
The search-tags that are available are:- to:<name or email address> from:<name or email address>subject:<part of subject>
- in:inbox
- is:starred
- has:attachment
- before:<date>
- after:<date>
Any other words, phrases that are included in the search-field will be full-text-search, that means, it can be part of the subject, sender, reciever or message body. As of now, it does not search through attachments.
Any search-tag can be negated by the use of a "-" before the search-tag.
Labels
Gmail has decided against using conventional folders, and instead uses "Labels", also known by the public as "tags". This means that you can assign a message several labels, and use any (or many) labels in the search to find these messages.One neat way to use this, is to have a label for work-related mail, another for account information (login-information, and account-registrations), and another for an interest organization, for example...
Then you can search for "label:work label:account" to find any work-related account-emails.
IMAP
When using IMAP and labels together, Gmail will show your labels as folders. If you then copy an email to a folder you will in effect, add that label to the mail. If you delete a message from a folder, you will remove that label.
Filters
When you start to receive large amount of mails, filters are your friend. You can use filters to automatically assign labels, forward, archive, star, remove, or mark emails as spam. If you are part of some email-based newsgroup, you can set up a filter that automatically assigns those emails an label for that newsgroup, If you're forwarding emails from another email-account, you can create a filter so that those mails get a label for that... You can create a filter that automatically deletes mails that comes from your ex-girl/boyfriend... With filters you can automate a lot of your otherwise manual labor.
Second Email-address, and more
Gmail has support for acting as another email-account. As long as you have POP-access to the account, you can manage that email-account through Gmail. That works by Gmail fetches you'r emails via POP from that account, presents it to you in the Gmail interface.And you can also configure your gmail account to send emails, posing as your other email account. (But first you must via Gmail send that account an confirmation code, that you must give back to Gmail).
You configure this in the Settings menu, accounts-tab.
Gmail help about Accounts.
Additional Email-adresses to your own account.
Gmail has some neat features that allows you to give out email-adresses that are not quite your "real one" but close enough, so that Gmail deliveres it to the right spot. There are two different techniques you can use for this.Dots
When Gmail recieves an email to deliver to someone the first thing they do is strip out any dot's (for example if your email is john.doe@gmail.com, your internal gmail-accountname would be johndoe, and after stripping out any dots gmail will deliver any combination of dots to your account even if you send it to johndoe@gmail.com or j.o.h.n.d.o.e@gmail.com or john.....doe....@gmail.com). This is useful if you wish to trace where an email comes from, but they don't think that "+"-signs are valid parts of an email-address.Plus-addressing
When Gmail recives an email with an plus-sign somewhere in it, it will automatically strip of everything from the plus-sign to the at-sign in the email. So mails addressed to john.doe+newsletter@gmail.com will be delivered to the johndoe@gmail.com adress. This is really useful if you wish to trace back where the message author got your email address from.Example. You are somewhat skeptical about giving out your email-adress to a certain site. So instead of giving it your real email-adress (john.doe@gmail.com) you give out an +-addressed address (john.doe+badsite@gmail.com). If you later recieve bad emails to john.doe+badsite@gmail.com you know that bad site really did something bad with your emailadress, and you can then easily set up filters that autmatically removes any email that comes in to your +-addressed address.
Security
Gmail has the support for using SSL-connections (and even enforces it, at some times) which means that you are safe against man-in-the-middle-attacks[1] by encrypting the connection between your browser and Gmail.SSL-connections are enforced when logging in via the web-interface, and whenever you are accessing Gmail via POP, IMAP orSMTP. However after you've logged in, you might be bounced back into a standard HTTP-connection (non-SSL). If you go to gmail with a https-address then you will use an SSL-connection the entire time, and will be secure from man-in-the-middle-attacks.
Now Gmail offers an option to force the use of SSL connection all through the web-interface session. This is selected in the settings, menu, general-tab. Near the bottom.
Third-party clients
Gmail has support for using third-party clients to access your email via POP, IMAP and SMTP over SSL-connections. This feature allows you to use any email-client of your choice. For example, if you are not a fan of the conversation-threading in Gmail, or you want to sort your emails, you need to use a third-party application.IMAP
With IMAP you only download what you need for the moment. Almost every IMAP-client starts with only downloading the headers of the email (who it was to, subject, date, and if it has attachment), and then when you open the email, downloads the body and attachments (Some email-clients, don't download the attachments, until you specifically tells it to). IMAP is generally the preffered way to use a third-party client that is constantly online.
Google help about IMAP.
Google help about IMAP.
POP
With POP you download the entire message, and attachment at once... And you cannot access the message until it's fully downloaded. This is great for offline usage, since it allows you to sync your emails once you have access to the net.
Google help about POP.
Google help about POP.
Other Settings
Vacation Message
When you are going to be away from your email-account for an extended period of time, A wise rule would be to put up a "vacation" message. The vacation-message works by sending out an email to everyone[2] that sends you an email message, with a predefined message. During the time-period you are in "vacation-mode". They will only get one message per vacation-period.
The vacation-period will reset if you disable/enable the vacation-message, or change subject or body of the vacation-message.
Gmail Help -- About Vacation Message
The vacation-period will reset if you disable/enable the vacation-message, or change subject or body of the vacation-message.
Gmail Help -- About Vacation Message
Signature
Signatures are a simple way to add some bulk-text to every outgoing email-message.
According to General Netiquette Rules signatures shall start with double-dash and a space, and a carriage return ("-- ↵"), and should not contain more than 4 lines.
You can set your signature in the Settings-menu, under the General Tab.
Gmail Help -- About signatures
According to General Netiquette Rules signatures shall start with double-dash and a space, and a carriage return ("-- ↵"), and should not contain more than 4 lines.
You can set your signature in the Settings-menu, under the General Tab.
Gmail Help -- About signatures
Keyboard Shortcuts
Gmail has a lot of keyboard shortcuts, which can help you save A LOT of time, if you use Gmail a lot. To see the shortcuts, make shure it is enabled in the settings (under the General-tab), and then press "?" on your keyboard. An overlay will appear, to show you which keyboard shortcuts are available to you and what they do.
Labs
Labs features are features that are good enough to be allowed out to the public, but perhaps not stable or good enough to be released to the general-public, therefore labs-features are moved away, and somewhat hidden. In the Labs-section you can also find different functionalities that everyone might not want, such as automatically previewing youtube videos directly in the email, instead of forcing you to click the link, and go to youtube's page.References
- Man in the middle attacks are attacks where someone has access to any place in the communiction-line between you and another endpoint. He is able to listen in to any traffic going between you and the other endpoint, reconstructing the traffic.
WIKI: Man in the middle attack - Depending on your settings, you can choose to only send out vacation messages to contacts in your contacts-list.






Rajamanickam Antonimuthu
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Searching Chat history within Gmail.
One more feature I like in Gmail is, we can search the chat history of Gtalk within Gmail without doing any additional steps.
Thanks,
Rajamanickam
Joe
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sharing a second email address
I hated the webmail interface and so, added that address to my gmail account so i could retrieve those messages via POP. Because I set the flag to leave the original messages on that server, it doesn't cause a problem.
Now, one of my associates has a gmail account of his own and wants to add the same general address as his second address on gmail. A message came to me asking me to validate the request. Can two different gmail users share the same second address? What happens if I approve the validation request - will I lose access to the second address? Will it generate an error?
Thanks!
On another page though, many corporates are skeptical about "leeking" their data to a third-party company, such as Google. You might even be accused of industrial spionage or something like that, for indiscriminatly forwarding/fetching all your corporate email to a third-party (such as Google)
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Knol Foundation
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Knol Author Foundation
Gnutt Halvordsson
Thank you too!
Bill Woodruff
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GMail's Search function was excellent until ...
Until whoever removed the "Search the Web" option button.
Good tips, thanks !
best, Bill
Gnutt Halvordsson
Thank you!