Guide · updated 2026-10-14
How to make an audio guestbook without renting a phone
An audio guestbook lets guests leave a spoken message instead of writing in a book. Renting the vintage phone usually costs about $150–$350 for a weekend and up to $600 for premium ones. Here are three ways to do it for less.
Short version: If you can solder, convert a rotary phone with a Teensy or Raspberry Pi kit. If not, give guests a voicemail number. To include people who cannot come, collect messages by link before the day.
Build one from a rotary phone
It needs soldering and some coding, and a few evenings.
Buy a vintage phone (second-hand or a kit, about $50–$150).
Follow an open-source build: PJRC's Audio Guestbook (Teensy 4.0 with the Teensy Audio Board) or a Raspberry Pi Zero project on GitHub.
Wire the handset speaker, microphone and hook switch to the board and flash the code. Lifting the handset plays your greeting and starts recording; hanging up stops it.
Test the power supply and memory card at a full rehearsal.
After the event, copy the recordings off the card and join them (see our guide to combining voice messages).
Use a voicemail number
Put a phone number on a sign; guests call it from their own phone and leave a message. Google Voice voicemails can be up to 3 minutes, with no limit on how many, but personal Google Voice is only available in the US. Paid guestbook number services cost from about $17 to $99 per event.
Phone-line audio sounds thin compared with a recording made on the phone itself, and you usually download the messages one by one.
Collect messages before the day
A guestbook only records the people in the room. For grandparents who cannot travel or friends abroad, send a link beforehand so they can record from their phone, then play the result at the event or give it to the couple.
What usually goes wrong
- Noise. A party is loud; a handset helps, a phone's speakerphone does not.
- Nobody uses it. Put it somewhere visible with a sign, and have someone nudge guests early in the evening.
- The card fills or the battery dies. Rehearse with a full-length test.
- You end up with a folder of separate files. Plan time to join them if you want one recording.
The same job with VoiceHug
VoiceHug covers the people who will not be in the room: send a link before the day, everyone records from their phone, and you get one recording to play at the event or give afterwards.
1. Record your own message
Say who it is for and record first, so everyone hears how it sounds.
2. Send one link to the group
Post it in the family or friends group chat, or send the WhatsApp invite. You see who has recorded and can remind anyone invited by email.
3. Each person records on their phone
They open the link and tap the microphone, with prompts if they need ideas. No app, no account. They can also send a WhatsApp voice note.
4. They get one recording
VoiceHug levels every voice, puts a short pause between them and makes one MP3 with a chapter for each person, plus a gift page to send.
Free for you and up to 5 others. $9.99 once for a larger group.
Questions
- How much does it cost to rent an audio guestbook phone?
- Usually about $150–$350 for a weekend, with premium rentals up to about $600, plus shipping.
- Can guests leave a message without the phone?
- Yes: with a voicemail number they call from their own phone, or a link they record from in their browser.
- How much does VoiceHug cost?
- Free for the organizer plus up to 5 contributors (6 people). For larger groups it is a one-time $9.99 with no limit on contributors. Contributors never pay.