To compose an email, follow these steps:

1. Open the RadioMail app and tap Compose in the lower right corner.
2. Enter the recipient's call sign or email address in the "To" field.
3. Type your message in the main body of the email.
4. If you want to attach any files or images to your email, tap Attach and select the files or images you want to include.
5. When you're ready to send your email, tap Send in the top right corner.

You can save your message in progress as a draft by tapping on the "Cancel" button. This will bring up a pop-up menu asking if you want to save your email as a draft. If you choose to save it, the email will be stored in the "Drafts" folder in your RadioMail app. You can access the draft at any time to continue working on it and send it when you're ready. If you choose not to save the draft, the email will be discarded.

To create a position report, follow these steps:

1. Open the RadioMail app and tap and hold Compose in the lower right corner.
2. A menu will appear. Select the "Position Report" option
3. Your latitude and longitude is automatically determined from the phone's GPS
4. Enter an optional comment.
5. When you're ready to send your position, tap Send in the top right corner.

Position reports are posted to the APRS network and public for all to see.

You can view your position reports at aprs.fi

A Winlink address consists of a call sign followed by "@winlink.org", and it functions similarly to an email address. For example, if an amateur radio operator's call sign is "K2BQJ", their Winlink address would be "K2BQJ@winlink.org".

To address messages to Winlink recipient, you can simply type the callsign, omitting the "@winlink.org".

In addition tactical addresses that can be used in emergency situations are supported. Tactical addresses are shorter and easier to remember than regular Winlink addresses, and they are often used by emergency responders and other first responders who need to quickly and reliably communicate with each other.

Tactical addresses consist of a two- or three-letter prefix, followed by a one- or two-digit number, and they are typically assigned to specific individuals or groups. For example, a tactical address might be "EOC12" or "TAC3". To send a message to a tactical address, simply enter it in the TO or CC field.

In addition to sending messages to other radio stations through the Winlink system, you can also send messages to regular internet email addresses.

To address a message to an internet email address, simply type in the recipient's full email address, including the domain name (e.g. "john.smith@gmail.com") or access it the contact application.