Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Signature Generator App - With Signature Generator, you can create a free digital signature by Typing or Drawing your signature. Then download your signature and use it to sign documents and contracts.
MailClark - The Slack bot for external communications
Online Signature Maker - Create a free downloadable electronic signature
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
SignatureGenerator.how - 100% free online signature generator offers unlimited usage and integrates with Outlook and Gmail with visually-appealing templates, and no registration is required