Your Email Hosting plan includes all your email data and website traffic in its monthly bandwidth limit and disk space allocation. This guide will explain how it works and the factors influencing its usage.
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What Is Monthly Bandwidth?
Monthly bandwidth measures the amount of data transferred when you send or receive emails and when visitors interact with your website each month. It includes both email data stored on your server, and data exchanged between your website and its users.
Your hosting plan includes a set amount of bandwidth per month. Sending emails, including attachments, contributes to your bandwidth usage.
Exceeding your allocation may result in additional charges or temporary unavailability of your email service, prompting consideration for a plan upgrade to accommodate higher usage.

Factors That Can Impact Monthly Bandwidth Usage
- Size: Larger email communications and attachments consume more bandwidth. Non-text attachments like images and videos are Base64 encoded, increasing their size.
- Multiple Recipients: Each recipient of an email receives a separate copy, affecting bandwidth. Depending on their configuration, some servers may consolidate emails sent to multiple recipients on the same server.
- Spam Emails: Though typically filtered, unsolicited spam emails still consume server resources and contribute to bandwidth usage. Using a spam filter can help mitigate their impact.
- Old Email Messages: Storing outdated email data on your server, particularly when using synchronised mail clients across multiple devices, can unnecessarily consume bandwidth. Regularly deleting unnecessary emails after downloading them can optimise storage and reduce bandwidth usage.
For further assistance with email hosting and bandwidth management, contact our Support Team.
Additional Information
When it comes to measuring bandwidth, all online communications among servers were initially quantified in bits per second (bps). Nowadays, due to improved network capabilities, speeds are usually represented in Mbps (Megabits per second) or Gbps (Gigabits per second).
It’s important not to confuse these with Megabytes (MB) and Gigabytes (GB), which refer to digital storage such as files, images, and documents.
Email Threats Affecting Monthly Bandwidth
Spamming
Spamming involves the bulk distribution of unsolicited emails, often containing malware or deceptive links to phishing scams that infect systems and steal sensitive information. Effective server-side spam filters are crucial for identifying and blocking such emails before they reach recipients.
Malware
Malware distributed via email can compromise security and increase bandwidth usage. Implementing security measures, including firewalls, malware scanning and removal, is essential for protecting email servers and preventing malicious attacks.
Spoofing an Email Address
Spoofed emails appear to originate from a legitimate email address but are sent by cybercriminals. While usually more of a nuisance than a direct threat, spoofing can disrupt operations and hurt your business’s reputation. It is recommended that you verify email authenticity and promptly report suspicious activity.
Hijacked Email Address
Cybercriminals seize a hijacked email account, allowing unauthorized access to emails and potentially sensitive information. Immediate action, such as changing passwords and contacting your email hosting provider for assistance, is critical to regain control and mitigate risks associated with unauthorized access.
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2. Enter your Email and Password.
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