Question: Is there a customizable, all-in-one business suite that includes email, storage, and document editing capabilities for teams of all sizes?

If you're looking for a customizable, all-in-one business suite that includes email, storage and document editing, IceWarp is a good option. It includes hosted email, team chat, video and audio conferencing, document management and cloud storage. Options include 200GB of email storage per user, chat rooms, videoconferences with up to 1000 participants, and 1TB of private cloud storage. IceWarp is geared for teams of any size, with customizable interfaces, antispam and antivirus protection, and permission controls.

Another good option is Spike, which combines chat, emails, meetings and collaborative documents into one service. It comes with a Magic AI assistant for tasks like drafting email replies and editing documents, and a Unified Teamspace that unifies chat, emails and documents into a single thread. Spike is designed to accommodate different communication styles to help break down communication silos, and it offers professional business email, custom email domains and video meetings.

Bitrix24 is another option. It's a suite of tools for team management and sales, including CRM, task and project management and HR automation. It offers a free forever plan with unlimited users and integrates with other tools like Jira, Trello and Asana. With its broad feature set, Bitrix24 can be used by businesses of all sizes that want to improve their operations and team collaboration.

If you're more focused on document management and automation, airSlate is a powerful option. It includes tools like pdfFiller, DocHub and SignNow for advanced PDF editing and signing. The service is designed to automate repetitive document workflows, including compliance with regulations like GDPR and HIPAA. airSlate has flexible pricing options so it can be used by businesses of all sizes.