TrekMail Webmail: A New Email Client Built Into Your Account

For the past few years, TrekMail has shipped RoundCube as the browser-based email client. TrekMail Webmail is the new browser-based client for TrekMail accounts. It works, but it is a third-party application bolted onto the platform — it does not know about your aliases, it cannot use the API, and it has not meaningfully changed since 2010.

We built a replacement from the ground up. Every TrekMail account now includes a new webmail client built specifically for this platform. If you log in at your TrekMail account, you will get the new interface by default. RoundCube is still reachable — there is a "Switch to classic webmail" link on the login page — but it is in maintenance mode. New features go into the new client.

The layout

The interface follows a three-column layout: folder list on the left, message list in the center, reading pane on the right. All three columns are configurable. You can move the reading pane below the message list, or turn it off entirely and open messages full-screen. The divider between the message list and reading pane is draggable, so you can give more space to whichever side you use more.

Message density is adjustable — comfortable spacing by default, or a compact view that fits more messages per screen without scrolling. The sidebar shows real unread counts on every folder, and they update immediately when you read, move, or delete a message without a page reload.

Conversations and threading

Emails are grouped into threads by In-Reply-To headers and subject line. A client who sends you four follow-up emails on the same topic collapses into one row in the message list. Click the row to expand the full thread and read every message in sequence.

Threads with more than four messages collapse older ones automatically — a count shows how many are hidden. Click the counter to expand everything. Each message in a thread has its own reply, forward, delete, move, and spam actions. The full MTA headers are available from the original source view. Authentication status — SPF, DKIM, DMARC — is displayed per message directly under the sender line.

Compose

The editor is TipTap, a proper rich text implementation. Bold, italic, underline, strikethrough, lists, blockquotes, links, and inline code all work without the inconsistencies of the older execCommand approach. Formatting does what you expect.

You can paste images directly into the message body and they embed as inline images with CID references — attached to the email, not hosted externally. Files dropped anywhere onto the compose window attach automatically. Drop multiple files at once and they all queue, each with a progress indicator.

If you mention "I have attached" or "see attached" in your message but have not actually added a file, the client catches it before you hit Send and asks whether you meant to attach something.

Reply and forward open inline below the message you are reading. The quoted text from the original collapses behind a ··· button. Expand it when you need to reference or edit it. Reply-all populates To and Cc correctly, removes your own address from the list, and respects Reply-To headers.

Identities and signatures

Before sending, you can select which identity to send from. Each identity has an email address, display name, optional reply-to address, and an HTML signature. If you have multiple domains or aliases, create a separate identity for each and switch between them in the compose toolbar.

Templates

Saved templates are accessible from the compose toolbar. Create a template once — subject, body, and formatting — and apply it to any new message with one click. Useful for support replies, standard follow-ups, or any message you write more than twice a month.

Scheduled send

Write a message, click the dropdown arrow next to Send, and pick a delivery time. Predefined options cover tomorrow morning, tomorrow afternoon, and next Monday morning. Or pick an exact date and time from the date picker. Scheduled messages sit in a Scheduled folder until they go out. Open the folder at any time to cancel or reschedule one before it sends.

Search

The search bar supports plain keywords and Gmail-style operators: from:, to:, subject:, after:, before:, is:unread, is:starred, has:attachment. Click the filter icon next to the search bar to open an advanced search panel and fill in fields instead of typing operators manually.

Quick-filter buttons let you jump to unread messages, starred messages, messages with attachments, or mail from the past seven days without typing anything.

Keyboard shortcuts

The full shortcut set:

Press ? from anywhere in the interface to get the full list on screen.

Bulk actions and context menu

Select multiple messages using the checkboxes in the message list, then apply an action to all of them at once: mark as read, mark as unread, star, move to folder, archive, or delete. Right-click any message to get a context menu with the same options. You can also drag messages directly onto a folder in the sidebar to move them.

Folders

Create, rename, and delete folders from the sidebar. Folder subscriptions let you control which IMAP folders appear — useful if you have dozens of system or legacy folders you do not need to see every day. Trash and Junk can be emptied in one click from the folder context menu.

External images

Messages with externally hosted images do not load them automatically. A banner appears at the top of the message asking whether you want to load images from that sender. This prevents tracking pixels from reporting back when you open a message.

Browser notifications

Opt-in desktop notifications for new messages. When enabled, a notification appears in your OS notification center when new mail arrives — even if the webmail tab is in the background. Enable it from the toolbar at the top of the inbox.

Contacts

Address autocomplete in To, Cc, and Bcc pulls from your contacts as you type. Contact photos come from Gravatar when available. The full contacts panel lets you add, edit, and delete entries, organize them into groups, import from CSV or VCF, and export in either format.

Calendar

A built-in calendar is accessible from the left navigation. Create events, set reminders, add locations. ICS files attached to incoming emails parse automatically — a button lets you add the event to your calendar without copying dates. The calendar layout works on mobile without horizontal scrolling.

Settings

Settings open as a full panel from the top navigation. The available sections:

• Profile — display name, language, theme preference
• Forwarding — unconditional forwarding to another address
• Filters — rules that sort, forward, flag, or discard incoming email based on sender, subject, body, or size
• Auto-Reply — vacation responder with custom message and optional start and end dates
• Sieve — raw script editor for server-side filtering logic (Agency plan)
• Identities — send-from addresses and HTML signatures
• Templates — saved compose templates
• Blocked Senders — block individual addresses or entire domains

Auto-Reply is now available on the Starter plan. It was previously limited to Pro. If you are on Starter and going away, you can enable it from the Auto-Reply tab without upgrading.

Dark mode

A theme toggle sits in the top right corner of the login card and in the main toolbar. The setting persists across sessions. On first load, the interface follows your OS preference automatically if you have not set it manually.

Mobile

The layout is fully responsive. On a phone, the three columns collapse into single-screen navigation with back buttons between them. A floating compose button sits in the bottom right corner so you can start a new message from anywhere. Settings open as a full-screen view on mobile and modals are sized for touch.

Progressive web app

The webmail can be installed as a standalone app. On Chrome and Edge, an install icon appears in the address bar. On iOS, use Share and then Add to Home Screen. Once installed, it opens in its own window without browser chrome.

Languages

The interface ships in 13 languages: English, French, German, Spanish, Portuguese, Italian, Dutch, Russian, Japanese, Korean, Chinese, Arabic, and Hebrew. Arabic and Hebrew use right-to-left layout automatically. The language is detected from your browser settings on first use and can be changed in Settings under Profile.

API and MCP

Everything the webmail can do is available through the API with a message token. The Message API covers 52 endpoints: reading and sending mail, attachments, drafts, scheduled send, spam reporting, bulk actions, folder management, contacts, contact groups, calendar events, identities, templates, and blocked senders.

The MCP server exposes 98 tools total. AI agents using Claude, GPT, or any MCP-compatible client can manage a TrekMail mailbox through natural language — draft replies, schedule messages, manage contacts, query the calendar, and more.

The classic webmail

RoundCube is still running. On the login page, there is a "Switch to classic webmail" link in the top left corner that takes you to the original interface. It connects to the same mailboxes and works exactly as it always has. We are keeping it available for users who have existing workflows built around it. It will not receive new features, but it is not going away any time soon.

Getting started

Log in at your TrekMail account. If your account has multiple mailboxes, switch between them from the account menu in the top navigation without logging out. Documentation is at trekmail.net/docs/webmail-clients/using-trekmail-webmail.