RadioMail 1.5 is an iOS email app that sends and receives messages over amateur radio using the Winlink network. It works when cellular and internet are unavailable. A valid amateur radio license is required to use the app.

What It Does

RadioMail connects your iPhone or iPad to the Winlink network to send email via radio. Winlink is a global network of amateur radio and authorized government stations operated by licensed amateurs. It supports attachments, position reporting, and interoperable emergency communications.

Key Features in Version 1.5

The 1.5 update is called the “Robust Packet Radio” release.

Connectivity Options:

• Radio Ready: Pairs with packet KISS TNC radios and modems via Bluetooth. Works with VARA modems via WiFi. VARA modes require VARA software running on an accessible computer.
• Built-in Packet Modem: Includes an internal 1200 baud AFSK modem. Compatible with DigiRig Lite and DigiRig VOX audio interfaces.
• B.B. Link Adapter: New adapter connects iPhones and iPads to Kenwood TH-D75 and TH-D74 radios to access the built-in KISS TNC packet modem. The adapter plugs into iPhone or a USB-C power bank. This is the final production run for B.B. Link. No more units will be made after current stock sells out.

Station and Messaging:

• Station Directory: Automatically retrieves station info from Winlink and organizes by proximity using your current location. Supports custom stations for peer-to-peer connections. Peer-to-peer connections are outbound only.
• Favorites: Save stations and access them by modes and bands.
• Forms: Compose and view 100+ standard Winlink forms. GPS coordinates pre-fill based on location. Received forms are sharable and printable as PDFs. Requires additional subscription.
• Camera: Access camera directly or attach pictures from photo library. Images are automatically optimized to reduce transmission time.
• Location: Uses internal GPS for location in messages and forms. Can post position to the APRS network.
• Attachments: Preview attachments and annotate images. Access files locally or in iCloud. Save or share attached files via other apps.
• Flexible Addresses: Send or receive with tactical addresses or secondary accounts. Address both Winlink and internet recipients.
• Digipeater: Configure up to two digipeaters to extend range in packet or VARA FM mode.

App Integration:

• Contacts: Lookup contacts from the address book when composing messages.
• Notifications: Receive messages when RadioMail is in the background. Get alerts for new messages. Limited to telnet connections only.

Compatibility

Client Applications: Winlink Express, Pat, WoAD
Gateways: RMS Packet, RMS Trimode, BPQ32
Soundcard Interfaces: DigiRig Lite, DigiRig VOX PTT Cable, AIOC (All-In-One Cable) 1
Modems & TNCs: B.B. Link Adapter, Mobilinkd TNC3/4, DigiPi, LiNK500 TNC (Robust Packet), Dire Wolf software TNC, Soundmodem software TNC, VARA software modem
Radios: Kenwood TH-D74, TH-D75 2, BTECH UV-PRO, UV-50PRO, VERO VR-N76, VR-N7600, RADIODDITY GA-5WB, DB50-B, PicoAPRS V4

1 Requires firmware v1.4 or later and AutoPTT mode on.
2 Requires B.B. Link Bluetooth adapter.

Availability

RadioMail is available on the Apple App Store. Current rating is 4.8.

A beta is available on TestFlight to preview new features and test radio compatibility.

Requirements

You must hold a valid amateur radio license to transmit with RadioMail. RadioMail is independently developed by Makena Ventures LLC dba Island Magic Co. It is not affiliated with ARSFI, which operates the Winlink network.

Reviews

Jason KM4ACK: “RadioMail is a gorgeous app allowing us Winlink connections on the iPhone. Compatible with the Mobilinkd TNC, direwolf, VARA FM, and VARA HF.”

Josh KI6NAZ of HamRadioCrashCourse: “My new favorite ham radio app is RadioMail. Since I always have my iPhone on me, I can take a small radio pouch and retrieve my Winlink emails on the go! Great job!”

Support and Info

Documentation, FAQ, and community support are available. For release announcements and Sierra Niners videos, visit the developer site.

Privacy and Terms & Conditions apply. © 2026 Island Magic Co.

https://radiomail.app/

The post RadioMail 1.5: Off-Grid Email for Amateur Radio appeared on Hamradio.my - Amateur Radio, Tech Insights and Product Reviews by 9M2PJU.