13 Top Email Warmup Tools to Protect Sender Reputation (2026)
For many years, email felt like the promised land for marketers and salespeople. The ROI is off the charts and with a little bit of preparation, you can reach thousands every day. The only problem is that sending emails unprepared is like going mountain climbing in shorts and a t-shirt. You will get somewhere, but not very far. This is where the email warmup process comes in.