Category
Email Deliverability
Key features
Automated mailbox warm up
Gmail, Outlook, Yahoo and SMTP support
Live inbox and spam placement tracking
01 — Overview
What is
Mailwarm
Mailwarm is an email warm up service that builds sender reputation by generating real engagement such as opens and replies on your mailbox. It tracks inbox versus spam placement live and includes calls with a deliverability expert. Outbound and marketing teams connect Gmail, Outlook, Yahoo or any SMTP inbox and use it before and during cold email campaigns.
02 — Who it’s for
Ideal Customer Profile
Used by sales teams, agencies, founders, marketers and newsletter senders, from startups to large companies that send cold or bulk email.
03 — Capabilities
Key Features
Automated mailbox warm up
Gmail, Outlook, Yahoo and SMTP support
Live inbox and spam placement tracking
IP warm up
Deliverability expert calls
Email insights
05 — Similar tools
Alternatives
06 — FAQ
Frequently Asked Questions
What is Mailwarm used for?
Mailwarm warms up email accounts by sending them positive engagement, which helps emails land in the inbox instead of spam.
Who owns Mailwarm?
Mailwarm was acquired in June 2025 by a group of deliverability experts who launched mailX, a deliverability platform, around it.
Which email providers does Mailwarm support?
It works with Gmail, Microsoft Outlook, Yahoo and any SMTP inbox, and it also offers IP warm up.
Who is Mailwarm for?
The site has dedicated use cases for agencies, founders, marketers, sales teams, newsletter creators, cold outbound senders and developers.