As sent to the Iranian embassy in Ottawa (firstname.lastname@example.org). Please feel free to borrow:
Your Excellency, the Ambassador of Iran
Please apply your offices to release Pastor Yousef Nadarkhani. It is my hope that the Iranian judiciary will cease to pursue its current course of action against Pastor Nadarkhani and will acquit him of all charges, in accordance with Iranian and international law. Please pass on my appeal to the Iranian Government as a matter of the greatest urgency.
I thank you for hearing and passing on my appeal.
Rev. George van Popta
Pastor of Jubilee Church
The Canadian Reformed Church of Ottawa
For background, see here.
My email bounced back. I phoned the embassy (613-235-4726) and spoke with an assistant there. She said that they are getting so many emails the system is overloaded. I made my appeal on behalf of the Christian pastor. She said they were getting many phone calls and that my appeal would be added to all those being sent to Tehran. So, please phone!