How to Compose and Send Email in TrekMail Webmail

Composing a message in TrekMail webmail is fast whether you are dashing off a two-line reply or crafting a fully formatted email with images, attachments, and a precise send time. This guide covers every option available to you.

Opening the compose window

There are several ways to start writing:

• New message: Click the Compose button in the top bar, or press C on your keyboard
• Reply: Click Reply below an open message, or press R
• Reply to all: Click Reply all, or press Shift+R
• Forward: Click Forward, or press F
• On mobile: Tap the floating + button in the bottom-right corner

By default, replies open inline — directly below the message you are responding to. If you prefer a larger workspace, click Pop out to move the compose area into a floating window you can resize and reposition.

Formatting your message

TrekMail uses a rich text editor with a toolbar above the message body. Here is what each tool does:

To switch back to plain text at any time, open the More options menu in the compose toolbar and select Plain text mode. Note that switching to plain text removes all formatting — this cannot be undone.

Adding inline images

Inline images appear inside your message body rather than as separate attachments. There are two ways to insert one:

1. Drag and drop: Drag an image file from your computer into the message body. It appears at the cursor position.
2. Paste from clipboard: Copy an image (for example, take a screenshot), then paste it directly into the compose area with Ctrl+V (Windows / Linux) or Cmd+V (Mac).

Tip: Inline images travel with the email — recipients see them directly in the message without having to open a separate attachment. This is ideal for annotated screenshots, diagrams, or product images.

Attaching files

To attach files to your message:

1. Click the paperclip icon in the compose toolbar
2. Select one or more files from your computer
3. Watch the progress bar as each file uploads

You can also drag and drop files from your desktop directly into the compose window.

Attachment limits:

• Up to 20 files per message
• 25 MB combined total size for inline attachments

A progress indicator appears for each file while it uploads. Once all files are ready, the Send button becomes active.

Files larger than 18 MB auto-route via Drive

If you attach an individual file 18 MB or larger, TrekMail webmail uploads it to your TrekMail Drive in the background and replaces the attachment with a clean public download link. The recipient sees a normal-looking message with a Download button instead of a heavy attachment that their email provider might reject.

The auto-routed link defaults to a 100-download cap. You can adjust the cap or set an expiry date from the composer attachment row before sending.

This means there is no upper file-size limit on what you can effectively send — anything that fits in your storage pool can be sent through the Drive auto-routing path.

Attaching files already in Drive

If a file is already in your TrekMail Drive (templates, brand assets, deliverables you keep on hand), use Attach → From Drive in the composer toolbar. Pick the file, and a download link is added to the message. No re-upload needed.

For the full mechanics of Drive-attached emails, see Sending Large Attachments via Drive.

Choosing who you send from

If you have multiple identities set up — for example, you send from both hello@yourdomain.com and support@yourdomain.com — a From dropdown appears at the top of the compose window. Select the address you want the recipient to see.

To set up additional sending addresses, see the identities and signatures guide.

Undo send

Undo send gives you a short window of time to cancel a message after you click Send, in case you caught a typo or remembered something you forgot to include.

To enable undo send:

1. Go to Settings → Preferences → Compose
2. Under Undo send delay, choose a duration: 5, 10, 20, or 30 seconds
3. Save your settings

To cancel a message you just sent: After clicking Send, a banner appears at the bottom of the screen with an Undo button. Click it before the countdown reaches zero.

Once the countdown expires, the message is delivered and cannot be recalled.

Schedule send

Schedule send lets you write a message now and have it delivered at a specific date and time — useful for sending during business hours, hitting the right timezone, or preparing messages in advance.

To schedule a message:

1. Click the arrow next to the Send button
2. Select Schedule send
3. Pick the date and time using the date picker that appears
4. Click Schedule

The date picker and the quick preset buttons (Later today, Tomorrow morning, Next week) show your current timezone next to the time, so you can confirm the exact moment the message will go out — especially useful when scheduling for a recipient in a different region.

Your message is saved to the Scheduled folder in the sidebar. You can open it, edit it, or cancel the scheduled send at any time before it goes out.

To cancel a scheduled message:

1. Open the Scheduled folder
2. Click on the message
3. Click Cancel scheduled send

The message returns to your Drafts folder, where you can edit and resend it whenever you are ready.

Saving and managing drafts

TrekMail automatically saves your compose window as a draft every 30 seconds while you are writing. If your browser closes unexpectedly, your draft is waiting in the Drafts folder when you come back.

To save manually: Press Ctrl+S (Windows / Linux) or Cmd+S (Mac) at any time.

To resume a draft:

1. Open the Drafts folder in the left sidebar
2. Click the draft to open it in the compose window
3. Continue editing and send when ready

Sending a draft removes it from the Drafts folder automatically.

Keyboard shortcuts for compose