I'm wondering if StartCom is a trusted CA on iOS.

I'd like to setup a mail server for a TLD, and use their free certificate. It's only about $10/year cheaper than more well known authorities, so the deciding factor is if it's trusted on my iPhone.

I know it is on OS X, Windows and many linux distributions, but would like to be certain.

2 Answers 2


I think this Apple support article has the list you're looking for. It is updated as changes are made:

iOS: List of available trusted root certificates

And StartCom is on there.

  • 1
    This link goes to iOS 8 now.
    – Almo
    Feb 22, 2015 at 4:39
  • 1
    @Almo I edited my question and this answer to make it less prone to obsolescence. Feb 22, 2015 at 8:58

Here's the trust list for iOS 7:


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