When comparing 10 Minute Mail vs Discard.Email, the Slant community recommends 10 Minute Mail for most people. In the question“What are the best temporary email address services?” 10 Minute Mail is ranked 4th while Discard.Email is ranked 36th. The most important reason people chose 10 Minute Mail is:
Each 10 Minute Mail address lasts 10 minutes, then is deleted. Before expiring, it can be refreshed to 10 minute duration if needed.
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Pros

Pro Literal throwaway, gone after use
Each 10 Minute Mail address lasts 10 minutes, then is deleted. Before expiring, it can be refreshed to 10 minute duration if needed.
Pro No need to register
10 Minute Mail does need to be registered on to use its service.

Pro Accepts mail from blacklisted sources
Blacklists are a common anti-spam tactic, but despite careful curation they can have false positives that prevent valid mail from getting through. Mail from blacklisted servers is simply rejected, and won't even show up in a spam filter. 10 Minute Mail has no blacklist, and accepts mail from all sources.
Pro Can be turned into a permanent email adress
Pro Can be used to verify emails
Emails sent to the throwaway email address are kept for 30 days. As long as you remember the address you used, you can view the emails and verify the email account.
Pro No commitment necessary
You don't need to create an account on Discard.Email, and it's totally free.
Cons
Con Only lasts 10 minutes
Sometimes subscription verification emails take longer to arrive.
Con Not all of the domains are owned by Discard.Email
Some of the domains are sponsored, which means Discard.Email can't guarentee they will be available down the road. That being said, it is very clear if you are about to use a sponsored domain.
