Después del éxito de la lista que os publiqué hace unos días con varias formas de aumentar la productividad usando Gmail, seguro que también os gustará conocer EmailOracle.

Se trata de una aplicación que, después de integrada en nuestro Gmail, nos permite saber cuándo el destinatario abre nuestros mensajes, incluso podemos configurar el sistema para que nos avise si pasan varios días sin que se abra el email enviado.

El funcionamiento es muy sencillo: EmailOracle incluye una imagen invisible en los correos que enviamos. Si en algún momento se hace una petición a su servidor buscando dicha imagen, considerará que el email ha sido abierto.

Compatible con Google Apps es ideal para ver la lista de los emails que no reciben respuesta.

Aquí tenemos otra buena alternativa para crear encuestas y obtener la opinión de la gente.

ivoted se destaca porque permite obtener las respuestas desde diversos medios, incluyendo sms y twitter, lo que puede hacerlo ideal para encuestas que no quieran o no pueda limitarse al público web.

Después de creada podemos obtener las estadísticas en tiempo real, con unos gráficos bastante intuitivos, aunque poco sofisticados.

Por desgracia la versión gratuita sólo permite un máximo de 30 respuestas, bastante limitado para la mayoría de las encuestas profesionales.

The following is also my column this week in Advertising Age.

Contrary to popular belief, video didn't kill the radio star, YouTube didn't knock off TV and Twitter didn't shut down blogging. However, in each case the steady advance of new technology definitely forced the incumbents to evolve. One can argue, for example, that some of the more established blogs on the web benefited greatly from building content strategies that engender massive link sharing on Twitter. Much the same, TV ad creative has changed to facilitate additional exposure on YouTube.

Enter e-mail marketing, which, to some degree, has been beaten down by regulation, and has taken a backseat to social networking. Nielsen revealed last week that e-mail's share of time declined 28%, putting it in third place, while social networking, the leader, climbed 43%.

Despite these attention currents, however, the reality is that e-mail is stronger than ever. According to an eConsultancy study of 1,400 U.S. consumers, 42% said they prefer to receive ads for sales and specials via e-mail compared to just 3% who said the same for social-networking sites and 1% who preferred Twitter.

Savvy marketers are beginning to see that if they leverage all of their channels effectively, they can increase their overall ROI and, in the process, establish a deeper bond with customers and influencers.

They will have help.

Quietly and steadily, email marketing is evolving and turning more social, thanks to a blitz of homegrown innovations, acquisitions and start-ups that are reinventing the platform. Many companies are building end-to-end "social CRM" tools that will help marketers manage their relationships by mashing up existing customer touch points and social-networking sites.

Here's a look at some of the companies in the space:

Constant Contact, an e-mail-marketing vendor, in May acquired Nutshellmail, a handy tool that helps individuals and businesses manage their entire social-networking presence via e-mail. Nutshellmail offers a suite of plug-ins, including one that makes it easy for businesses on Facebook to add an e-mail newsletter. Constant Contact is planning to build this into an entire end-to-end offering for small -and medium-size businesses.Rapportive, which provides contextually relevant information to Gmail and Google Apps users about their contacts and the companies they work for, last week generated a fair amount of buzz for raising a seed round that included high-profile investors such as Paul Bucheit, Gmail's architect and now a key member of the Facebook team. Xobni, a similar technology that integrates with Blackberrys, Facebook, LinkedIn and more, raised $16 million earlier this year. Meanwhile, Microsoft's new Outlook Connector brings a similar functionality right to millions of corporate desktops.MailChimp, a popular e-mail-newsletter platform, is in the process of integrating Facebook "like" buttons to campaigns. This will provide marketers with detailed analytics that reveal how many and who clicks on "like" and whether they progressed down the funnel toward a sale, thereby increasing overall accountability.Flowtown and Rapleaf, meanwhile, are taking the opposite approach by helping marketers understand the social connectivity and influence of existing members in their online databases. Flowtown has an e-mail-campaign-management system that integrates with many of the larger platforms, as well as an array of powerful insights tools.

As more marketers apply analytics across the entire marketing spectrum (online and offline) and tap into tools like the ones mentioned above, the mentality will change from reach to relationships. In the process, both e-mail and social-media marketing may gain, but what's clear is that the two are increasingly made for each other.

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