PostNitro logoPostNitropostnitro.aiCase study · First 3 weeks
Customer results

67% to 100% inbox placement in 11 days.

PostNitro sends from Google Workspace to a huge database of clients and leads, and had no idea anything was wrong until a MailStrike placement test showed mail to Google inboxes hovering around 50%. Their reputation with Google was quietly damaged while every other provider held a perfect 100%. Eleven days of warming on MailStrike's AI-powered deliverability platform fully restored it, and placement has held at 100% since.

Sending fromGoogle Workspace
Problem found byFree Deliverability Test
Average inbox rate before67%
Placement at Google beforeAround 50%
After 11 days of MailStrike100%
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Placement by provider100% since day 11
GoogleMicrosoft Outlook
40%50%60%70%80%90%100%First placement testDay 0Day 11Day 18

Reputation with Google fully restored by day 11. Every other provider held 100% throughout.

PostNitro only found out by testing.

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