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Warmupinbox is there. It's not costly. Not sure if it's a good idea to use a free warm up tool.

Use "TrulyInbox" It's totally free You can also try "Snov.io" It allows you to warmup one email for free.

@Swarnendu Dutta why? Any specific reason? We tried Gmass and didn't face any issue. However, not sure now if things have changed.

In that case go for TrulyInbox @Ankita Tripathi I guess they even allow unlimited email inboxes to be warmed up for totally free! Disclaimer -> It might not be as affective as other paid warmup tools in market and might just offer some basic stuff. But still good if your email volumes are not that high!

Hmm got it. Which is the best paid tool?

Here are the few things to consider if you are considering free or any paid tool. Do they use real accounts to build reputation or do they use free/temporary email accounts? Do they send real messages or are they sending random dummy text? Do they just send and receive messages or do they also ensure those messages are properly engaged? All these factors might affect reputation now that many service providers are getting strict.

Hmm got it!

In my observation comprehensive email warming tools tend to be paid, free options include MailGenius and Mail-Tester for spam testing, and limited free versions of GlockApps and SendGrid for domain authentication and monitoring. Gradual sending volume increase and good sender practices are essential for successful email warming. You can also check Warmy, Warmbox, WarmUp Inbox.

Does Truly inbox give score the way Lemwarm gives? I am unable to understand if I should start my campaign or not @Saatvik gupta

Definitely since Truly Inbox is free, it might not have much capabilities. It's majorly just for beginners. For your reference, here's how my Truly Inbox dashboard looks like:- hope that helps @Ankita Tripathi