Over the years, Email has become an essential part of our life. It takes the advantage of the Internet to communicate across different people working on different platforms. The communication is done by exchanging the information using the store-and forward model. With the advancement of the technologies, Email has changed the way we communicate. Some of the advantages of using Emails for communication are mentioned below.

  • Emails can be available everywhere and at any time
  • Emails can be easily accessed and stored for later retrieval
  • Emails can be forwarded to a third person in the same format
  • Emails are considered the fastest means of communication.
  • Emails can be accessed free of cost.
  • Emails can be used to reach more people in lesser time

However, there are various other features of Emails. Moreover, it totally depends upon the Email provider and the Email client.

Am Email looks like same accessed either through an Email provider or through an Email client. An Email client is nothing but a computer program that manages a user’s Email. Some of the most commonly used Email client application includes Microsoft Outlook, IBM Lotus Notes, Apple Inc.’s Mail, etc. Such client applications work in collaboration with their respective server machines and are considered very professional in their approach. The Server machines store user Emails and other information in a secured fashion.

An Email provider on the other hand is not very professional in their approach and often comes free of cost. Some of the most commonly used Email providers include Gmail, Yahoo, Hotmail, etc. However, the storage spaces provided to store Emails depend upon the provider.

The format of the Email across all these providers as well as various clients does not differ. However, a provider or a client can use a specific Email template, as the providers keep on changing the various rules and parameters defined for Emails. Based upon your requirement and the services provided by various Email providers, you can choose an Email provider.

As sending and receiving Emails are the part of daily activities of one’s life, such activities eventually increase the mailbox size. Every Email provider has a defined space for storage. Whereas Email clients also have certain limitations on the size of the data file. Due to various security reasons, many Email providers limit the maximum Email size to a certain limit. Otherwise, an Email provider with large mailbox can cause serious problems like freezing of the application sometimes leading to data loss due to email size issues. Such activities are often supported by various error messages, which get displayed when you try to send Email messages beyond the permitted limit. In most cases, such Emails will bounce back and would display one of the following error messages.

‘Attachment size exceeds the allowable limit’

‘552: Message size exceeds maximum permitted’

‘System Undeliverable, message size exceeds outgoing message size limit’

The size of the message you are trying to send exceeds the global size limit of the server. The message was not sent; reduce the message size and try again

However, you can extend the storage size to a certain limit by paying a certain amount to the Email provider. So, before choosing an Email provider you need to check the Emails and file attachment limit for various providers.

Since there are various Email Clients available, each provides different limitations for the Email size. Some of the commonly used Email clients with their default maximum size limit are mentioned below.

Email Client Maximum Allowed Size Parameters
MS Outlook 20 Mb Per Attachment
 Mozilla Thunderbird     Unlimited      –
       Windows Live Mail 10 Gb/50 Mb   10 Gb (per Email) and50 Mb (per attachment)
 Spicebird     Unlimited              –
            SeaMonkey     Unlimited              –


Note: Such limitations are applicable for both sending and receiving Emails.

There are various Email providers as well. Each of them has a different limit for Email size. Some of the most commonly used Email providers with their default maximum size limit are mentioned below.

Email Provider Maximum Allowed Size Parameters
    Gmail   25 Mb Per Incoming or Outgoing Emails
   Outlook.com   10 Mb/300 Gb 10 Mb (For Attachment) 300 Gb (For Files Attached through SkyDrive)
   Hotmail   10 Mb/300 Gb 10 Mb (For Attachment) 300 Gb (For Files Attached through SkyDrive)
   Yahoo Mail   25 Mb – Unlimited 25 Mb (Per Email) Unlimited (For Files Attached through DropBox)
   AOL   25 Mb Per Incoming or Outgoing Emails
  Mail.com   50 Mb /10 Mb 50 Mb (Attachments) 10 Mb (Files)
  Zoho Mail   12 Mb/10 Mb 12 Mb (For Email) 10 Mb (For File)
  GoDaddy Workspace   30 Mb/ 20 Mb 30 Mb (For Email) 20 Mb (For File)


Note: Such limitations are applicable for both sending and receiving Emails.

However, if you want to send an email, which exceeds the maximum size limits, you would not be able to do so. However, you can try a few solutions while sending and email. You can reduce the size of an email to some extent by compressing them. Such measures should be avoided in case you are sending some confidential mails, as compressing can lead data loss at times.

various information related to email clinets like MS Outlook, Gmail, Novell GroupWise, Windows Live Mail etc can be found at following resource: