1. Boomerang for Gmail is a Firefox / Chrome plugin that lets you take control of when you send and receive email messages.

  2. FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.

  3. Gmelius is a next-generation CRM and shared inbox for Gmail, tailored to the needs of SMEs that helps you sell more productively, organize and scale your pipeline, manage and build valuable customer relationships.

  4. Automatic follow up emails. Keeps on bumping until you get a reply.

  5. Sales Engagement platform with bunch of sales engagement tools like Email Tracking, Document Tracking, Mail Merge etc. to boost sales teams productivity.

  6. Google translate is a website that provides a free service that instantly translates words between languages.

  7. Vocus.io is a productivity tool for Gmail available as a Chrome extension.

  8. Prospecting, like a boss. Find any email, reach out, measure everything and integrate with your CRM.

  9. Send customized follow-up emails until they get answered.