Picking a cipher suite for embedded system emails I have an embedded system product that emails out event notifications periodically.  I have implemented a non secured email version, but want to use SSL/TLS, if possible.  Can I only use 1 cipher suite for space considerations?  Or, do I have to support many types?  I'm trying to keep it simple, but not sure if there will be issues with just one or a couple.  Any input on how others would handle a simple one-way email feature using SSL/TLS?
You can support as many or as few as you like - take a look at RC 5247 for TLS 1.2.  If you are on an embedded system w/o any hardware crypto, you may want to skip the RSA algs that take a long time in favor of the ECDH.  In any case, look for an embedded crypto library that available for your toolchain and cpu vs writing it yourself.  It'll save time as well implementation flaws.

You might try initiating a TLS session with one of these email hosts and see what comes back for the algorithms they support - I suspect it's pretty extensive.  Then you could be sure that the ones you pick will work.  

Wireshark is your friend for this.