The Good Part First: Setting up Lemwarm was super straightforward. Within a few clicks, I was up and running. What really impressed me early was the customization options. Their team seemed to understand the difference between B2B and B2C outreach. They even went as far as tailoring the warmup messages based on our industry and the type of audience we’re targeting.
Lemwarm was smart enough to distribute our custom email templates to about 40% of the warmup emails. This made it feel like we were heading in the right direction, building sender reputation while keeping things relevant.
But then, when I checked my inbox, every single warmup email had the subject line "Lemwarmup."
Now, if you’ve been in the cold email world for a while, you’ll understand why this is a major issue. ESPs (especially Gmail) AI filters are next-level these days. The moment they start noticing patterns like emails with identical subject lines, particularly something as on-the-nose as "Lemwarmup" they flag it.
It screams "automated warmup tool," which defeats the entire purpose of warming up your domain to look human and organic.
For us, it didn't serve the purpose.
Lemwarm was smart enough to distribute our custom email templates to about 40% of the warmup emails. This made it feel like we were heading in the right direction, building sender reputation while keeping things relevant.
But then, when I checked my inbox, every single warmup email had the subject line "Lemwarmup."
Now, if you’ve been in the cold email world for a while, you’ll understand why this is a major issue. ESPs (especially Gmail) AI filters are next-level these days. The moment they start noticing patterns like emails with identical subject lines, particularly something as on-the-nose as "Lemwarmup" they flag it.
It screams "automated warmup tool," which defeats the entire purpose of warming up your domain to look human and organic.
For us, it didn't serve the purpose.
