Priority Mux ✕ Resend
From:
Mux ✕ Resend
To:
Resend Forward 2026
Contents / Subject:

Best reply wins

Build an automatic email responder that uses Mux Robots to understand a video and Resend to deliver the result. The most creative reply wins an all-expenses-paid trip to Resend Forward in San Francisco on Oct. 21, 2026.

How it works: Someone emails a video link to your Resend receiving address. Your code sends the video to Mux, runs one or more Mux Robots workflows, waits for the completion webhook, then turns the results into an automatic reply.

What the reply does is up to you. It could summarize the video, rate its content, pinpoint the most social-worthy moment — or do something else entirely.

We’ll send one of three mystery videos to your address to test what you built.

How to enter:
1. Set up a Resend receiving address
2. Build and deploy your automatic reply using mux and Resend Inbound
3. Submit your receiving address via this Google Form
↩ See an example entry

Judging criteria

From: The Judges
To: Contestants
Subject: Re: your submission

We want to see how creative you can get. Feel free to throw practicality out the window.

Commit to the weird idea, make us chuckle, leave us more confused than before, or create something delightfully useful.

Note that we'll be using one of three random videos to test your creation.

What you could win
All-inclusive trip, on us
One winner gets an all-in trip to Resend's inaugural one day conference for builders who care deeply about their craft to connect, share ideas, and learn how to create software users love.
Catch Mux Staff Community Engineer Dave Kiss speaking on stage, plus a few of our folks at our sponsor table.
What's included:
1 × Ticket to Resend Forward
1 × Economy flight from anywhere in the U.S. to San Francisco
2 × Nights at the conference hotel
1 × $500 Visa gift card to cover meals and transportation

Example entry

This is what a person might send to your competition email.

From: Mia Torres <mia@recital.resend.app>
To: yourproduct@yourdomain.com
Subject: recital.mp4

hi! here's saturday's video from sofia's recital, can you do your thing?

https://drive.google.com/file/d/1xK9…/view

example code of what you'd build
Facility receiptSF-94103
09:41:02 inbound.email.received · Resend Inbound parses the body, finds 1 URL
09:41:03 POST api.mux.com/video/v1/assets { "input": "https://drive.goog…" }
09:41:29 robots.job.chapters.completed
09:41:31 robots.job.summarize.completed
09:41:31 webhook → yourdomain.com/hooks/mux 200 OK
09:41:32 resend.emails.send { to: "mia@…", subject: "RE: recital.mp4" }
26 seconds later, in Mia's inbox
From: Your Product <yourproduct@yourdomain.com> via resend
To: Mia Torres <mia@recital.resend.app>
Subject: RE: recital.mp4

Here's Saturday, sorted:

00:00 · Warm-up & tuning
02:41 · Sofia's solo (this is the one)
09:12 · Full ensemble finale
14:30 · Bows & flowers

Reply "Portuguese" and I'll send a dubbed, captioned version for the grandparents.

yourproduct · video in, magic out
chapters & dubbing by Mux Robots · delivered by Resend

Here's what's happening in that middle section:

  • Email goes out and Resend Inbound hands you the video URL.
  • Mux Robots processes the video and a webhook fires when it's done.
  • Your code automatically writes and sends the reply.

See it in action

Tap a sample link below then hit Send. What happens in between the email send and reply is what you'd build.

New message Form RV-2026
To: demo@bestreplywins.resend.app
Subject: (auto-filled from your link)
no real email is sent. yet.
Facility receiptSF-94103 · live
new mail ✦ 1 unread
From: demo <demo@re-your-video.dev> via resend
To: you
Subject:

Need some inspo?

Feel free to use any of these as a jumping off point and add your own twist.

Sort manifest · inbox4 messages · 4 unread
From: The Podcast Butler <butler@podbutler.email>
Subject: RE: ep47-raw.mp3, your chapters are ready

Good evening. Your episode is served.

00:00  Cold open: the RSS argument
02:14  Why podcasting refuses to be platformed
19:37  Listener mail, the $40 mic question
41:05  Next week's teaser

Show notes, paste-ready, are below. Reply "transcript" for the full transcript, or "clip 19:37" for a shareable cut.

> On Tue, you wrote: here's the raw ep, do your butler thing
> https://wetransfer.com/…/ep47-raw.mp3

You upload, I compose. Yours, P.B.

From: grandma@ <send@grandma.email>
To: vovó Lúcia <lucia@…>
Subject: RE: recital, agora em português 🇧🇷

Olá! A Sofia mandou um vídeo para você, nós dublamos e legendamos em português.

▶ recital-sofia-pt.mp4 2:41 · dubbed audio · burned-in captions

Ela ficou ótima. ♥

> Original subject: recital (Portuguese), so the subject line was the settings panel.
From: Ask My Footage <ask@myfootage.email>
Subject: RE: lecture-09.mp4 · "what is adaptive bitrate streaming?"

At 41:22, right after the determinant recap.

▶ lecture-09.mp4#t=2482 cued to the exact moment

Also touched on briefly at 12:05, if you want the intuition-building version first.

> You wrote: link + a question in the body. That's the whole query language.
From: The Screener <submit@screener.email>
Subject: Submission #482: APPROVED ✓

Your clip passed moderation with zero flags and is queued for Friday's community reel.

a Resend Automation will keep you posted:
  now   → this receipt
  thu   → schedule confirmation
  fri   → your clip, live link

A UGC inbox where moderation, approval, and the entire comms sequence run themselves.