The App "2me" ("Ame" in italian) allows you to set one or more default e-mail addresses to send any text element can be shared by other device's applications (web pages, tweets, text notes ...)
For each share is done by 2me thus providing a list of device's e-mail clients whence select from time to time the one to be used, or alternatively, you can specify a default client with which you always send the e-mail.
If you want to use two or three different configurations, there are the twin applications "2me2" and "2meToo" ("Ame2" and "AmePure" in italian).

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