One tap.
Straight to your email.
Email yourself notes in 0.3 seconds.
Simple Memo - Captio-style is the fastest email-yourself app for iPhone. Send notes to your inbox in 0.3 seconds with one tap. Built as a Captio alternative after Captio shut down in October 2024. Also works as a LINE Keep replacement for text memos. Features on-device AES-GCM encryption for the Outbox and send history, offline auto-resend via Outbox architecture, and no persistent server storage of your memo text (transit only during send). Cheaper than Drafts ($2.99/mo vs $4.99/mo) with faster launch speed.
Concept What is Email Memo?
Email Memo is a new way to take notes — jot down your thought and send it to your own inbox with one tap. Email is the one place everyone checks daily. That's why zero memos get missed. No folders, no tags, no organizing. Learn how Note-to-Email works and never lose a thought again.
App Preview Simple Means Fast
3 Steps How to Use
Features Key Features
One-Tap Send
Send instantly with a single tap the moment you have an idea.
0.3s launch, 150ms send. The fastest path from thought to inbox.
Offline Support
Works without internet.
Auto-resends when back online.
History & Status
Check send history in-app.
Easily track pending memos.
Privacy First
On-device AES-GCM encryption for the Outbox and history.
Memo bodies are not persistently stored on our servers.
3-Minute Setup
Just set your destination email.
Ready to use in minutes.
Voice Input
Just speak to take a memo. Fully on-device — no upload, no extra cost.
Optional auto-start on launch.
Obsidian Integration
Auto-appends sent memos to your Obsidian notes.
No plugin, no app switching — in the background.
Just speak. It's a memo. Voice auto-input.
Tap the mic in the bottom-right, or auto-start on launch, then just speak — your voice becomes text and a memo on the spot. Powered by Apple's latest on-device speech recognition, so neither audio nor text leaves your device. Capture a thought even when your hands are full.
Your iPhone memos, automatically in Obsidian.
A memo you send with one tap is automatically appended to a note in your Obsidian vault — no plugin, no app switching, in the background. Capture on iPhone, organize in Obsidian: a clean division of labor.
Comparison Simple Memo - Captio-style vs Drafts — Quick Capture Compared
Drafts
- $4.99/mo (Drafts Pro)
- Powerful automation & scripting
- Complex action system
- Multi-destination output
- Steeper learning curve
Simple Memo - Captio-style
- $2.99/mo — 40% cheaper
- Pure speed: 0.3s launch
- One-tap email delivery
- AES-GCM encrypted
- Zero setup complexity
If you want scripting and automation, choose Drafts. If you want the fastest possible capture-to-email, choose Simple Memo - Captio-style.
Our Story Why We Built This
We were long-time Captio users. The ability to send a thought to your inbox with one tap — that simple experience was unlike any other memo app. But in October 2024, Captio shut down. We searched for an alternative with the same speed and simplicity, but nothing came close.
"If it doesn't exist, we'll build it ourselves." That decision launched this project. We achieved 0.3s launch and 150ms send speeds, built an Outbox architecture for reliable offline delivery, and designed a privacy-first system that never stores your memos on any server. Carrying forward Captio's spirit with modern technology, we created the best "note-to-email" experience possible.
Use Cases How People Use It
Capture ideas on the go
Launch in 0.3 seconds, type your thought, tap send. It's in your inbox before you forget. No folders, no tags, no friction.
Shopping lists & reminders
Jot down grocery items, school reminders, or anything you don't want to forget. Your inbox becomes a simple to-do list you already check every day.
Captio replacement
Same "memo-to-email" experience as the discontinued Captio, plus an offline Outbox and on-device AES-GCM encryption for the Outbox and send history. See the full comparison →
Input is incredibly smooth
"The flow really matters when you use a notes app — your thinking gets tangled, or the next idea surfaces while you're still writing the last one. This app is genuinely smooth: a fresh blank screen appears the instant you tap Send, so I especially want people who've only ever used the iPhone's default apps to try it. It's rare to be able to keep thinking and outputting this actively without breaking your train of thought. And if you ever want to look back, you can search your history, which makes thinking flow even better. Being able to use it without any hesitation is really great."
— App Store customer review (★5.0 · 5 ratings, May 2026; translated from the original Japanese)
Available on the App Store
Released February 2026 — Free to download
Plans Pricing Plans
How the 7-day free trial works
Premium plan: unlimited sends
7-day free trial: Unlimited sends
After trial: Free up to 3 sends/day / Premium (monthly & yearly) unlimited
Price may vary by region. See the App Store for the latest price.
*Cooldown limits and server-side rate limits may apply to protect system stability.
Support FAQ
What is Simple Memo?
Simple Memo is a memo app focused on one thing: launch, write, send. Your memo is sent as an email to a pre-configured address with a single tap. There are no folders, tags, sync settings, or complex features.
Can I send memos while offline?
Yes. When you send a memo offline, it's stored in the Outbox — encrypted with AES-GCM on your device. When connectivity is restored, all pending memos are sent automatically.
Can I use Simple Memo for free?
Yes. The first 7 days are a free trial with full access to all features and unlimited sending. After the trial, you can continue on the free plan (3 memos per day).