Warmbox

In plain words

Warmbox is an email warm-up tool designed for sales and marketing professionals who want to improve their inbox deliverability. It sends emails from a user's inbox and simulates genuine engagement through actions like opening, bookmarking, and replying to help establish sender reputation and avoid spam filters. The tool aims to increase the likelihood that legitimate emails reach recipients' inboxes rather than spam folders.

written from the facts on this page · September 2026

From the sources

Warmup your inbox with the most advanced solution & never land in spam anymore! Warmbox sends emails from your inbox & interacts with them like perfect leads would do (out of spam, open, bookmark, reply, etc.). Increase your deliverability and reach the inbox!

Warm-up your cold email inbox. And never land in spam anymore. Try Warmbox.ai now and start to warm-up your inbox for cold emailing.

Send cold email campaigns that don't land in spam. Let your emails reach the inbox, get more leads and generate more sales! Connect your inbox from any email provider (Gmail - GSuite OAuth, Outlook 365, Yahoo Mail, Amazon SES, SMTP, etc.) in few seconds. No technicals skills required: fast & easy to set-up! Warmbox will send everyday realistic emails from your inbox, remove these emails from the spam folder, open & bookmark these emails, reply to a part of these emails and generate positive interactions with your inbox to raise your email sending reputation. Get benefit of a +35,000 private inboxes network composed of a mix of the most important email service providers to increase globally…from warmbox.ai

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