Letter logoLetter App

User Manual

Everything the Letter app can do — write, format, and print real letters, then share them as a print-ready PDF.

PRO

Some features are part of the Letter PRO subscription (marked PRO below). The first time you tap a PRO feature, the app shows the upgrade screen with a free trial. Everything else — writing a letter, previewing it, sharing and printing it — is free.

1

Getting around

When you open the app you land on your list of letters.

  • Search — filter letters by subject or content using the field at the top.
  • New letter — tap the + button to start a new letter.
  • Open a letter — tap any letter in the list to preview it.
  • Settings — tap the gear icon to open app settings.

On larger screens — a tablet, or a computer such as a Mac or Chromebook — the list stays on the left and the selected letter's preview shows on the right.

The list of letters
2

Writing a letter

Tap + to create a letter, or open an existing one and tap Edit (pencil icon). The editor has the header fields, the body, and a signature area:

  • Sender — your own address (the “From”). Type it, pick a saved sender profile, or import a contact.
  • Recipient — who the letter is going to (the “To”).
  • Subject — the subject line. You can also apply a saved template here.
  • Body — the letter text itself.
  • Signature pane — sign the letter by drawing your signature.
  • Signature field — type your name to appear below the signature.

Tap the ✓ Save button in the top-right to save. New letters are added to your list; edits update the letter and return you to the preview.

Leaving with unsaved changes prompts “Discard Changes?” — choose Discard to throw them away or Keep Editing to go back. To delete a letter, open it and tap the trash icon in the preview, then confirm.

The letter editor
3

Formatting textPRO

In the editor, a formatting toolbar lets you style selected text. Select the text you want to change, then tap the button — or use the keyboard shortcut if you have a hardware keyboard.

ButtonShortcutEffect
BoldCtrl + BBold text
ItalicCtrl + IItalic text
UnderlineCtrl + UUnderlined text
Tip

Prefer a plain letter with no styling? Turn on Text Only in letter settings.

4

The AI writing assistantPRO

If enabled, a sparkle (✨) button appears in the editor. It drafts a subject and letter body for you.

  1. 1Type at least a short note about what you want — a subject and/or a few instructions in the body.
  2. 2Tap the ✨ button.
  3. 3First time only: agree to Data Processing — your subject and message are sent to an AI service to generate the draft. Choose Accept, Privacy, or Decline.
  4. 4The assistant shows a “Writing your letter…” animation, then presents a suggested subject and body.
  5. 5Tap Use to drop the suggestion into your editor, or Cancel to keep what you had.
The AI writing assistant
5

Previewing, sharing & printing

Opening a letter shows a live PDF preview of exactly how it will print. The preview updates whenever you edit the letter. From the top bar you can:

  • Share — send the PDF through any app (email, Drive, messaging…).
  • Print — print through the standard print dialog (printer, paper size, copies).
  • Settings — open this letter's layout settings.
  • Edit — return to the editor.
  • Delete — remove the letter.
The live PDF preview
6

Letter layout & settingsPRO

Open a letter and tap the gear icon to control exactly how it appears on paper. Tap ✓ Save when done.

  • General — show or hide your “From” address on the page.
  • Stationary — upload a PDF to use as letterhead behind your text.
  • Format — paper size (A4 or Letter) and the language used for the date.
  • Date — pick the date, an optional prefix (e.g. a place name), and a format (Short → Full).
  • Alignment — position the sender, date, recipient, and signature blocks.
  • Options — fold marks, page numbers, sender in window envelope, and text-only mode.
  • Font — font type (Sans, Serif, Monospace, Cursive) and size.
  • Margins — set top, right, bottom, and left margins.

Adding a logo or letterhead: the app doesn't design a logo for you, but you can place any logo or letterhead behind your text with the Stationary option:

  1. 1In your preferred app — Pages, Word, or anything that exports PDF — create a page with your logo (or full letterhead) exactly where you want it to appear.
  2. 2Open the letter and tap the settings (gear) icon.
  3. 3Under Stationary, upload that PDF. It sits behind your text as the background, so your logo shows on the printed letter.
Tip

To add your logo automatically to every new letter, create a sender profile and upload your stationary PDF there — then every letter you start includes it. You can also save the rest of these preferences in that profile so new letters begin with your preferred layout.

Letter layout settings
7

Signatures

You can add a signature two ways, and they can be combined:

  • Drawn signature (PRO) — tap the signature button to open a drawing canvas. Sign with your finger or stylus, use Clear to start over, then confirm. It's embedded as an image.
  • Text signature — type a closing/signature line (e.g. your name).

Use Signature alignment in letter settings to place it left or right.

8

Senders / identitiesPRO

A Sender is a saved “From” address bundled with your preferred layout — so you don't re-enter everything each time. Manage them in Settings → Senders: tap + to add, search to filter, or tap a sender to edit.

A sender stores the From address, the show-sender toggle, a signature (drawn and/or text), all the layout options, and a Default sender flag that's applied automatically to new letters.

While writing, use the select sender action next to the Sender field to drop a saved profile into your letter.

Managing sender profiles
9

TemplatesPRO

A Template is a reusable subject + body you can apply to any letter — handy for recurring letters. Manage them in Settings → Templates: tap + to add, search to filter, or tap a template to edit with the same rich-text editor.

While writing, use the select template action next to the Subject field to fill in the subject and body. The app also includes some built-in templates to get you started.

The templates list
10

Importing addresses from contactsPRO

Next to the Sender and Recipient fields you can pull an address straight from your phone's address book:

  1. 1Tap the contact action next to the field.
  2. 2The first time, grant Contacts permission when prompted. (If you declined earlier, enable it in the app's system settings.)
  3. 3Pick a contact; their address fills the field.
11

App settings & help

Open Settings (gear icon) from the letter list. From here you can reach:

  • Senders — manage sender profiles.
  • Templates — manage templates.
  • Help — opens the online help pages.
  • FAQ — frequently asked questions.
  • Contact support — email the support team.
  • Privacy policy — opens the privacy policy in your browser.
App settings
12

Letter PRO subscriptionPRO

Letter PRO unlocks the advanced features. When you tap a PRO feature without a subscription, the upgrade screen appears. PRO unlocks:

  • Sender profiles — enter your sender info once and reuse it.
  • Contacts — import addresses from your address book.
  • Templates — reusable letters for any occasion.
  • Signatures — add handwritten/personal signatures.
  • Layout — full control over how letters look.
  • Plus rich-text formatting, the AI assistant, and stationary.

The upgrade screen offers plans (weekly, monthly, yearly, or a one-time purchase) and typically a free trial, all shown in your local currency. Already subscribed on another device? Tap Restore purchases.

If you see “Billing is currently not available”, check your internet connection and make sure you're signed in to your app store account.

13

Languages

The app is available in 7 languages: English, German, Spanish, French, Italian, Portuguese, and Dutch. It follows your device's system language automatically, including locale-aware date formatting.

14

Phones, tablets & computers

The layout adapts to the size of your screen:

  • Phone — one screen at a time. Tapping a letter opens its preview full-screen; editing and settings open as their own screens.
  • Tablet & computer — on a tablet, or a computer such as a Mac or Chromebook, you get a two-pane view: your list of letters on the left and the preview on the right. Editing, settings, senders, templates, and the upgrade screen open as dialogs over the preview, so you never lose your place.
15

Syncing across devices (iPhone & iPad)

This section applies to the iPhone/iPad version only.

On iPhone and iPad, your letters, senders, and templates sync automatically over iCloud. Sign in to the same iCloud account on each device and your content stays up to date everywhere — no manual export or backup needed.

  • Sync happens in the background; there's no button to press.
  • Changes made on one device appear on your others a short while later.
  • iCloud must be available and enabled on the device for syncing to work.

If you have trouble syncing, check that:

  1. 1You are signed in with the same Apple ID on both devices.
  2. 2iCloud is enabled on both devices.
  3. 3The Letters app is allowed to store data in iCloud on both devices (see also Apple's iCloud support guide).
  4. 4The latest iOS version is installed on both devices.
  5. 5The latest version of the Letters app is installed on both devices.