Gmail is a free, advertising-supported email service offered as part of Google's G Suite, with 15GB of storage, color-coded inbox filters and unsend button.
Unbounce is an all-in-one tool for marketers that allows to build high-converting landing pages, popups and stickybars without the need for custom coding.
Zapier provides a cloud-based integration platform to help to connect their desired web apps and systems. they can use the Zapier platform to transfer data among the favourite apps with the software supporting over 300 apps.