Mailwasher - Over 8 million people use MailWasher as their spam filter
Callblock - The first app to block telemarketers automatically in iOS
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
Kyte - India's first AI powered SMS inbox
SpamAssassin - Use this program to "Unspam" your mailbox(es).
MyHumans - Block calls from numbers not in your contacts