To find the IP of an email sender is, most of the times, an easy task. This info is kept in the header of each email sent or received, so what you have to do is to find the header and know where to look for the IP. You can read in one of my previous posts exactly how to do this.
Back to the problem, if you need to make in such way that the emails you send look as coming from another country (hide IP email), you need to change your IP address.
Email Sent Using Microsoft Outlook or Mozilla Thunderbird
If you are using Microsoft Outlook, Mozilla Thunderbird or other desktop application to send you emails the best solution is to use a VPN service. The downsides of this approach are that you have to find a VPN service with IP addresses in the country you need and you have to pay for them.
You may use some free VPN services like Hotspot Shield or CyberGhost VPN. If you plan to send hide IP emails on regular basis you may consider subscribing to premium VPN services that offer a large variety of locations. Here are my recommendations: HideMyAss, ibVPN, PureVPN, NordVPN.
Email Sent From Webmail
If you want to send the email from Gmail, Yahoo, Hotmail or webmail the solution is simple and effective. Next, here are the steps you need to perform:
1. Go to proxy4free.com and look for a proxy from the country you need (Australia for the one that asked this). You should choose a high anonymous or anonymous proxy.
2. Set up your browser to use the proxy. Here is how for to do it for different browsers:
3. Go to XMyIP.com and check your IP address. If it shows the country you need then it is ok. If not, search for another proxy.
4. Load the webmail page (Gmail, Yahoo, Hotmail, etc), log in and send the email. It may run a little bit slow.
5. You are done!
If you want to make sure this works you could send a hide IP email to you and then check the headers of the email for the IP address.