Using Dyn’s dynamic DNS eliminates the headache and human error associated with tracking ever-changing IP addresses and allows you to avoid the alternative of purchasing pricey static IPs.
This service was discontinued and replaced by Oracle Cloud Infrastructure in May of 2020.
Dynu offers free dynamic DNS service for yourname.dynu.com and yourname.com. It has a simple API(update URL) and offers free update client software.
GSLB.me is a hosted, cloud-based highly reliable DNS and Global Server Load Balancing solution that provides full authoritative DNS services and DNS-based geographical traffic balancing, failover, high availability, geographical routing, dynamic DNS and DNSSEC.
Happy Moose is a super-efficient cloud anti-SPAM solution for organizations. It stops up to 99.7% of SPAM, and no false positives. It means that you don't need to sift through your huge "Junk" folder.This app doesn't have any features at the moment.
MailRoute provides a hosted service for mail protection from virus and spam.
MailRoute is a secure, hosted cloud email filtering service that you can have up and running in minutes. There's no hardware or software to install - just sign up, change your mx record, and you'.