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What's the difference between OptimumSSL and InstantSSL?
Which should I choose, OptimumSSL or InstantSSL?

About OptimumSSL
Optimum is the only SSL Provider to offer responsible companies the option of high speed domain validated certificate and highly trusted, organization validated certificates
In our capacity as a trusted certification authority, OptimumSSL CA provides the highest quality domain validated certificates at the lowest prices in the industry.
OptimumSSL certificates lower the barrier of entry for companies wanting to quickly secure e-commerce websites for ecommerce. Companies running with Apache and IIS web servers benefit from our automated certificate issuance processes, making OptimumSSL ideal for low transaction value and low volume e-commerce requirements.
To offer the widest choice possible to our customers, OptimumSSL has also chosen to resell the InstantSSL certificates from Comodo. InstantSSL certificates are fully organization validated certificates and are only issued after a stringent, two step validation procedure. Thanks to Comodo's investment in the revolutionary IdAuthority, issuance time for these certificates is substantially lower than the competition.
Why do we cost less?
OptimumSSL can deliver the highest quality certificates at a lower price than anyone else because we leverage new infrastructure technologies and processes to significantly reduce validation intervals and customer installation requirements - cutting the long term cost of supplying certificates
OptimumSSL certificates are issued using our fully automatic, 100% online ordering and provisioning system. In most cases, simply replying to the email we send you is enough to validate your certificate.
InstantSSL, from Comodo CA, use their revolutionary IdAuthority to expedite the issuance of their certificates. IdAuthority is one of the largest commercial online directories and provides the highest levels of efficiency and accuracy in validation methods.
We've also standardized our business processes and technologies to increase the efficiency of our communication, support and work flow procedures. Together, these new technologies and processes are driving our costs down and we pass these savings on to you.
Contact Details:
OptimumSSL CA
General information - info@optimumssl.com
Sales enquiries - sales@optimumssl.com
Support requests - support@optimumssl.com