The best alternatives to Mailflagger are Snov.io, Docsify, and Mailtrack.io. If these 3 options don't work for you, we've listed a few more alternatives below.
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Tanka— Tanka = Slack + Glean, built for fast-growing startups.
Snov.io is a B2B sales automation platform offering a variety of tools for lead generation, cold outreach, email deliverability, sales management and more. Explore new lead channels, automate time-consuming tasks and grow your business better with Snov.io.
Doubletick is a Free and Unlimited email tracking tool for Gmail and G-Suite, adds double checkmarks ✔✔ to your mail if it is read by the recipient (Just like WhatsApp) and notifies you with real-time notification.
FeedBee provides easy access to user feedback about your newsletters and customers. Makes feedback organized, informative and precise. Gain access to both custom qualitative and organized qualitative data.