How much storage is included with OpenSRS Email?

  • Standard mailbox costs $0.50/month which includes 5 GB storage.
  • Please do not set mailbox sizes other than the seven tiers listed below.
  • Emails up to 35 MB per email are supported.

Note: 1 GB = 1024 MB. For more information please visit our pricing page or our email agreement

 Pricing Structure

These should be the only sizes, nothing in between:

Size in GB Size in MB Price
5 GB 5120 MB $0.50
10 GB 10240 MB $1.00
15 GB 15360 MB $1.50
20 GB 20480 MB $2.00
30 GB* 30720 MB $3.00
50 GB* 51200 MB $5.00
100 GB* 102400 MB $10.00

Setting user mailbox quota
The maximum user mailbox capacity cannot be greater than the maximum capacity set for the email domain. The maximum capacity for the email domain cannot be greater than the capacity set for the company level. 

* Please contact OpenSRS Support if you require mailboxes that are larger than 20 GB.

Have more questions? Submit a request


  • Avatar
    Leonard Frank

    What is the theoretical maximum size that you would support, and what is the raw cost per gig of storage over 5G?



  • Avatar

    I'm also curious about this: what's the maximum size for a mailbox and the additional storage cost?

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    Anton Andriyevskyy

    Please can you tell us how much is 1GB.

    Also what does "Max Quota" mean in mailbox configuration?

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    Mark L.


    All of our accounts are set to be able to have a default mailbox size of 5GB and a maximum mailbox size of 16GB. Should you need more space, please contact support and we will be able to review your request. We recommend purchasing space in blocks of 5GB which is $0.50 each. For example, a 15GB mailbox would be $1.50 per month.


  • Avatar
    David Croft
    I don't understand how a mailbox comes with 5GB, can be incremented in blocks of 5GB, and yet I see multiple references to the maximum being 16GB. Is the maximum 15GB or 20GB?
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    Henry Abey

    Hi David. Previously, the limit was 16 GB. It is now 20 GB.

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    Markus Schrijver

    If you do want an email account > 20GB to 100 GB as shown above, is this possible or does it have to be on a different cluster, what would support be looking to ask if a > 20 GB box is needed?

  • Avatar
    Henry Abey

    Hi Markus, if you reach out to support directly we can increase the limit for you.

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