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Why Your Cold Email Strategy Needs a Mailbox Calculator (and How to Use One)

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Cold email outreach is not just about writing the perfect message—it’s about the “machine” behind that message. The most common error in outbound email outreach is miscalculating how many mailboxes you require. This in turn can lead to spam flags, bounce rates, and, eventually diminished campaign performance. To be able to scale cold email outreach and […]

How Many Mailboxes Do You Really Need for Email Outreach?

A muscular tiger character in a Warmy t-shirt stands with crossed arms next to text that reads: “How Many Mailboxes Do You Really Need for Email Outreach?”.

With all the focus on content, subject lines, and targeting, it seems that we usually overlook the role that your email infrastructure—your mailboxes, that is, your recipients—plays in the success of your email campaigns today more than ever.  All of these factors make it crucial to have accurate mailbox planning, which will ensure your emails land […]

Email Deliverability Demystified: A Simple Guide for Startups & Solo Founders

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Whether sending cold emails to generate leads, newsletters to engage your audience, or outreach to potential investors—email deliverability is critical to making sure you get noticed and actually get the engagement you need. After all, email has an ROI of $36 per $1 spent so it’s no wonder solo founders and startup CEOs want in on that […]

Mailbox Calculator Explained: What It Is and Why Email Marketers Use It

A digital graphic with the text Mailbox Calculator Explained: What It Is and Why Email Marketers Use It beside a form asking about the number of emails to send per day and per mailbox.

For email marketers, here’s a common dilemma: Finding the balance between sending just the right amount of emails to engage prospects while staying within the limits to ensure deliverability. It can be challenging, and that’s where a mailbox calculator comes in.  A mailbox calculator is a tool designed to help email marketers optimize their sending […]

Is Your Cold Email Template Getting You Marked as Spam?

Illustration of an anthropomorphic tiger wearing a black warmy t-shirt, standing with arms crossed next to the text: Is Your Cold Email Template Getting You Marked as Spam? on a white background.

When it comes to cold outreach, many marketers and sales teams focus on the quality of the email list. But, here’s some real talk. No matter how great your connections are, your cold email template can make or break your dreams. You may be sitting on a goldmine of perfect prospects, but if your email template […]

Cold Email Sequences: What They Are and How to Create One That Converts

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Cold email is very much an integral part of any sales and marketing strategy this 2025. Despite the growing influence of social media and other digital channels, email still sits on the throne as the best way for businesses to reach out to prospects. In fact, email marketing has one of the best ROIs at […]

Why Cold Email Sequencers Are the Secret to Successful Outreach

Illustration of an anthropomorphic tiger in a black warmy shirt, standing with arms crossed next to the text: Discover why cold email sequencers are the secret to successful outreach.

Cold outreach is an essential technique for sales and marketing professionals who wish to create leads and build relationships at scale. But manual outreach—not to mention follow-up email management—can quickly spiral out of control. It’s labor intensive, prone to error, and can easily miss things. Cue cold email sequencers: the revolutionary tool that is changing how companies are—or […]

Signature Builder Tools: What They Are & How to Use Them to Look More Credible

An illustrated tiger wearing a warmy t-shirt stands with folded arms next to the text: Signature Builder Tools: What They Are & How to Use Them to Look More Credible.

First impressions count in cold outreach.  From your subject line to your sign-off, everything in the email you send to a potential lead is being put under the microscope. Sales reps spend around 21% of their day writing emails, which is a reflection of how much people value good copywriting. But there’s an often-forgotten element that […]

Automate Like a Pro: How Cold Email Sequencers Boost ROI

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Cold emailing delivers, so it’s no surprise that it’s a common element in most outbound marketing strategies. Especially because you can reach hundreds (or even thousands) of prospects with just the push of a button. Whether you’re a sales group, a growth marketer, or a business owner, cold emails enable you to access a huge […]

Best Email Deliverability Tools for Cold Emailing

Illustration of an anthropomorphic tiger in a black Warmy shirt, standing with arms crossed next to text: Best Email Deliverability Tools for Cold Emailing—highlighting top email deliverability tools for your outreach success.

One of the most important things determining whether your cold email campaign will be successful or not is the deliverability. If your emails are not landing in your recipients’ inboxes, they’re not going to be opened and they’re not going to be read. Worse, they may wind up in spam or blacklisted—all your outreach efforts […]