Liftinbox

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LiftInbox is an automated email warmup service that builds sender reputation and improves email deliverability. The platform gradually increases warmup email volume over 30 days, automatically engages with warmup emails through opens and replies, and rescues any that land in spam. It also monitors SPF, DKIM, and DMARC records daily, alerting users instantly if authentication breaks. LiftInbox works with Google Workspace, Microsoft 365, Amazon SES, Mailgun, SendGrid, Zoho, and cPanel via SMTP and IMAP, making it a flexible email deliverability tool for businesses, agencies, and cold email marketers.