iPhone email app for productivity. Mailburn works great with conversations and has email tracking. Stay tuned for #marketing #email and #productivity tips.
Index constantly checks hot and trending companies for their latest activity. We haven't gotten to this company yet, but if you follow it you'll be the the first to know when Mailburn makes some noise.
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Airbnb
Lyft
Reddit
Salesforce
Fitbit
TechCrunch
Slack