Plugin that add a share to friends jQuery Lightbox
Back your WordPress blog up to any one of 40 storage clouds including S3, RackSpace Cloud Files, SkyDrive, DropBox, Gmail, Box.net, RackSpace Cloud Fi
The StorageMadeEasy Multi-Cloud File Download plug-in enables you to share files for download, via a widget, for over 30 cloud storage providers.
Please use https://wordpress.org/plugins/storagemadeeasy-multicloud-files-backup/. This plugin is deprecated and no longer maintained.
Social media share and bookmark buttons with integrated analytics. Automatically display buttons for those social networks, where visitor registered.
WP SMTP can help us to send emails via SMTP instead of the PHP mail() function.
Cool Social Counter for your Post.
Super Cool Plugin for inserting all kinds of Social Bookmarking & Sharing buttons. Has customizable Floating Share Bar, Widgets, Shortcodes also.
Adds a tell a friend, Share/Bookmark/Email/Social Bookmarking button.
Queue, Throttle, Send SMTP email through multiple providers. Automatic re-send when non-delivery received.
Congrats for joining the leader in the sharing space of WordPress plugins. "Sociable" is totally FREE, has over 1,7 million downloads and no
Allow your users to sign in using Facebook, Twitter, Gmail, and 29 other services.
Social Buttons for your website and Auto-Publishing of content to Social Networks.
Import users from vcard file format. Works with populair websites such as linkedin and gmail.
With this plugin you can login to wp-admin using your GMail credentials
RainmakerMoxie (BETA-limited support) is an interactive sidebar widget. Enter an email address and it displays a photo, name, social links and more.
Simplified version of Sinoshare plugin with 40 sharing options. Increase social networking with your Chinese audience.
Configure a mail server you want to use for mailing in WordPress
Version: 3.1 Configure SMTP mailing in WordPress, including support for sending e-mail via SSL/TLS (such as GMail).
3rd Party Authentication is a wordpress plugin that allows wordpress to authenticate against other authentication systems.
This plugin allows to share/search selected text of the site. Users can tweet,email,digg(+96 sites) selected text. Increases site usage and sharing
Display all your unread mails from your GMail account. Only works over HTTPS !
The 'Comments with OpenID' plugin allows to provide user details via OpenID service providers (Google, Yandex, LiveJournal etc.) while commenting.
Reconfigures WordPress email to use secure SMTP such as Gmail. Plugin options are accessible through the admin panel.
Invite friends on buddypress social network from MSN, gmail, Yahoo, facebook and twitter.
Enable your users to comment by entering their name/email/website details via well known OpenID service providers like Google, Yahoo, Flickr etc.
Allow your visitors to invite their contacts from Yahoo!, GMail, AOL, Hotmail and other providers to your blog.
Adds a 'Share This Post' button after each post. The share botton supports e-mail address book, social bookmarks and favorites.
Unique Comment Notify appends the author's name to subject of notification e-mails.
Use an SMTP server for sending email from your blog. Includes support for Gmail's SMTP.