Providers supporting subaddresses with a minus
 

Most email providers currently support subaddressing using the plus ('+') sign as separator, where foo+bar@domain.tld is delivered to foo@domain.tld.

Unfortunately my current email provider (tuffmail) is shutting down, and I am extensively using subaddressing with the minus ('-') sign as separator. I literally have hundreds of active addresses that look like foo-bar@domain.tld and it would be a huge pain to switch to a different separator.

Which email providers support the minus ('-') sign in a subaddress? I have found purelymail, but am interested to have some options to compare...

Yahoo and dismail.de

eumx.net does too

Perhaps it would be better to choose a provider that allows wildcard/catchall for your domain?

Then it's just a matter of creating filters to dispose of any unwanted emails.

you need to “split” your email account using aliases. You need to create an alias. for example.

foo-bar@domain.tld

foo@domain.tld -> real email account

foo-bar@domain.tld -> alias of foo@domain.tld