Most emails are very concise. Here are some tips:
Address your email to the Legislative Assistant (LA) who covers foreign affairs for your Member of Congress. Paste your message into the contact form on their website, putting "attn (staffer's name)" at the top. You can find the number of the DC office on their website, call, and ask for the name of the staffer that deals with foreign affairs.
Summarize your request in the subject line e.g. "Take the lead on increasing funding for global TB."
Introduce yourself as a constituent and thank them for some legislative action if you can.
Tell them what you are asking them to do.
Say very briefly why this is something that needs doing and why it matters to you. If you have a personal experience with the issue, share it!
Sign with your name and address.
Click here for sample templates and a list of the current Members of Congress serving on SFOPS!