@ishareflowers and
@Pistil , I am moving the discussion about shipping to here because it doesn't fit the purpose of the "important messages from host" thread but I want to answer you questions.
I have been shipping flat rate for the previous swaps, but I don't guarantee it because some items may not fit in flat rate boxes or it may be prudent to do first class on future packages if expenses run high for some reason (such as a shipping rate increase, like that which happened during a previous swap, etc...). I am aware of the dangers of envelopes and I have only used the bubble wrap envelopes when necessary. Thus far, no one has noted any issues with any seeds arriving to them in less than proper condition. I have also received a substantial number of seeds sent to me via bubble mailer and all have arrived safe and sound. If I should need to use an envelope, please rest assured that your seeds will arrive to you in good condition.