Private Cloud for Sending Large Email Attachments

How Teletom solves the problem of large file transfers — without third-party clouds and with full control over your content.

Why Large Files Are a Problem for Email

You've likely noticed how large files are handled by major email providers. The moment you attach a heavy file, it gets uploaded to the provider's cloud, and the email itself receives only links — not the actual files.

The root cause lies in the very nature of email protocols. SMTP and MIME, the foundation of global email, were designed in an era when networks primarily carried text. Any attachment — document, photo, archive — must be encoded in base64 format to pass through mail transport. This means:

+33%
file size increase
Base64 encoding inflates every attachment by a third
20–25 MB
email limit
Standard restriction across most email providers
×2
double storage
The file is stored in raw form at both sender and recipient
0
control
Once sent, you cannot recall or delete the attachment
Bottom line: sending large files directly through email is practically impossible. The file physically "dissolves" into the message, occupies space on provider servers, takes a long time to encode, and often fails to deliver due to connection drops or recipient-side limits. That's why major providers devised a workaround: upload the file to their cloud and embed only a link in the email.

How Major Providers Handle This

When you attach a large file in Gmail here's what happens:

It's convenient, but the model has obvious limitations: you hand your data over to third parties, depend on their policies and limits, and tolerate ads in the download interface.

How Teletom Does It

Teletom email uses the same principle as major providers — cloud upload and link delivery. But with one fundamental difference: the cloud is yours, deployed on your own server.

How it works

  1. You compose an email in the Teletom mail client
  2. You drag the desired files into the uploader — up to 5 GB each
  3. Files are uploaded to your own cloud on your server
  4. Links to the uploaded files are automatically attached to the email
  5. The recipient follows the link and downloads the file directly from you
Key difference: no third-party clouds, no provider storage limits, no ads in the download interface. The entire file journey — from upload to download — runs through your infrastructure.

Your Own Domains — Your Brand and Your Control

Pay attention to one important detail: file links point to your own domain. This isn't just a technical nuance — it's a powerful branding element.

Interfacecloud.your-domain.com
Downloads3.your-domain.com

Every recipient sees: you have your own mail transport, your own cloud, your own subdomains. This works for your brand exactly like corporate email on a custom domain — only more visible, because the recipient physically interacts with your infrastructure when downloading the file.

What Else Your Private Cloud Provides

Beyond branding, Teletom's private cloud is a fully functional tool with a range of useful features:

🔐
Full Control All uploaded content physically resides on your server. You decide what to store, where, and for how long.
📦
Universal File Exchange Upload files via email — then manage them like any cloud storage: rename, move, delete.
🛠️
Easy Management All file operations are performed through the Teletom web panel — no console, no complex setup.
💾
Backup Storage If your content is valuable, you can build your own, understandable backup system around it.
🚀
Up to 5 GB per File Forget about 20–25 MB limits. Videos, project archives, databases — everything sends without issues.
🌐
Provider Independence No third-party rules, no ads in the download interface, no risk of account suspension.

What's Next?

For details on how to build a convenient backup system for valuable content and what file management capabilities the Teletom web panel offers, see our dedicated article on the Teletom web panel.

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