As an open-source alternative to MS outlook, Evolution works good, and can replace the needs within e-mailing for users to a more cost-effective solution (like Evolution). But Evolution has its own little bag of standards, unlike MS outlook Evolution by default keeps a tight/strict confirmation towards standards..

One of these standards is the use of dashes (–) in signatures. If you follow the standards for signatures strictly, you should use two dashes followed by a space (e.g. — ) before your signature.Of course in modern day society nobody understands / uses this convention strictly, so here is an explanation how to remove the — (double dash) by default before your signature with Evolution .

Remove the default — (double dash space) before your signature within Evolution

1) Open the GCONF-editor (run gconf-editor)
2) Browse towards the key /apps/evolution/mail/composer/no_signature_delim
3) Change the value of the ‘no_signature_delim’ parameter to false
4) Log in again / Reboot to make it effective

As easy as that, now you know

Thanks to uwstopia for the tip!