List of email archive software

This article provides a list of software products and cloud-based services used for email archiving.

Email archiving has several objectives: long-term preservation of knowledge, regulatory compliance, legal protection, etc. Those different goals may call for different solutions. For example, the preservation of historical records may require a one-time migration (change of format) and storage, while regulatory compliance generally calls for the systematic and continuous archival of messages, using a solution that provides storage and retrieval of email over extended time periods.

Different products have been developed to meet those needs. They may be offered as a standalone computer appliance (possibly in the form of a virtual machine), as installable software that can be deployed on the user's premises, or as a cloud-based service. Those products may perform compression, de-duplication, encryption, indexing and advanced searching. They may work with a variety of email data sources (email systems and email storage file formats) and they may also support other types of messaging systems such as social media or instant messaging. Additionally, several collaborative software products (which commonly have messaging components) can also archive the data that they manage; however, those systems are not listed here since they generally do not archive third-party email data.

Components

In addition to a backup system, several other components are necessary for a useful email archiving system:

  • Message header/metadata.
  • Message body and related document attachments.
  • Search and retrieval.
  • Efficient storage.
  • Reliable gathering of email flow.
  • Policy enforcement, such as retention policy.
  • Compliance certification.

Notable products and services
gollark: The 350M one doesn't seem to exist and I can't really work with anything bigger.
gollark: This is annoying, apparently 6GB of VRAM isn't enough to finetune the 125M GPT-Neo even with a batch size of 1. I might just use Colab.
gollark: Geese are fearsome beings.
gollark: It would take ages to download so I'd prefer not to if it probably won't work.
gollark: Speaking of somewhat underpowered hardware, can I use the 2.7B GPT-Neo model on my RTX 2060 (6GB VRAM) in half precision? Multiplication leads me to think it's possible just considering the parameters, but some internet things imply it won't work presumably because of storing other stuff.

See also

References
  1. Prom, Christopher J. (December 2011), Preserving Email, DPC Technology Watch Reports, U.K.: Digital Preservation Coalition, doi:10.7207/twr11-01, ISSN 2048-7916
  2. Adgent, Nancy; Schmitz Fuhrig, Lynda (2008), Evaluation of tools (PDF), Sleepy Hollow, NY and Washington DC: CERP (the Collaborative Electronic Records Project)
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