Why do most cold emails get ignored? Belkins’ 2026 study found the average B2B reply rate was just 0.45% across 7.5 million emails sent in 2025. That’s replies divided by total sends, including bounces and unsubscribes. The bar is low, but that means a small edge compounds fast.

In this guide, I’ll walk you through 45 cold email tips that actually move the needle. You’ll learn how to research and target the right prospects, set up your domain for deliverability, personalize without burning hours, track the KPIs that matter, and use lemlist’s AI features to work faster at every step.

⚠️ Take it step by step. Spend some time on every tip in this checklist for the best results.

Research and targeting

#1 Define your ideal customer profile (ICP)

Why?

It ensures you target the right people, maximizing impact and ROI.

How?

Use our free ICP generator, or start from scratch with this B2B persona guide.

#2 Research all there is to know about your prospects

Why?

It’s the secret to pinpointing the perfect way and place to personalize your pitch with every outreach.

How?

Touch ground on:

Who they are (their role, company, interests, and recent achievements)
What’s up in their industry (news, challenges, and trends)
Their problems and needs (pain points and desires)
Past interactions (conversations or engagements you had with them)
Social media activity
Shared networks or contacts
Company goals (ongoing projects or initiatives)

Short on time? lemlist’s lemAgent lets you search the 600M+ lead database in plain language, enrich contacts with verified details, and spin up a multichannel campaign from a single chat. Research, enrichment, and outreach in one step.

#3 Segment your email list

Why?

Segmenting your lead lists sharpens your focus, so every message is relevant and converts. Mailchimp’s foundational segmentation study found that segmented campaigns had 14.31% higher open rates and 100.95% more clicks than non-segmented ones. The math is clear: generic lists cost you replies.

How?

After you find their email addresses, break them up into sub-lists.

You can use criteria like demographics, professional roles, and previous engagements. Or you can segment them into value tiers (least to most revenue potential) based on past sales trends.

You can also skip the manual sorting. lemlist’s Smart Messaging uses AI Variables to clean and segment your data automatically, so every lead lands in the right bucket before the first email goes out.

Say you have a set of leads, and you want to segment all leads that work for SaaS companies. You can use the following prompt:

Based on the following company description, determine if the company is very likely a Software as a Service (SaaS) company. Output ‘True’ if it is very probable that the company is a SaaS. Output ‘False’ if the company is not a SaaS. Output ‘N/A’ if the company description is empty. Input company description: {{companyDescription}} The output should always be ‘True’, ‘False’ or ‘N/A’

This prompt assumes that there’s a column called companyDescription.

Let AI do its magic, then push the leads to a campaign aimed at SaaS companies.

#4 Verify emails before you send

Why?

This is immensely important. It prevents bounces, which improves your email deliverability score.

How?

You can use a tool like Bouncer, or try a few free verification methods to make sure you have valid addresses.

Make sure you’re getting your contact information from a reliable source, so you don’t waste time on an endless list of undeliverable emails. Pull verified contacts from lemlist’s 600M+ contact lead database (65M+ companies) so you start from clean, deliverable data.

Best cold email sending practices

#5 Organize and format

Why?

Properly organized and formatted .csv files are the backbone of personalized, error-free email campaigns. They make contact import and targeted messaging reliable.

How?

Clean and structure your data. Remove duplicates, standardize fields (like names and emails), and sort into clear columns. This makes for smooth importing and effective personalization.

#6 Mind your volume

Limit it to 50–200 messages per sender daily. For larger campaigns, consider distributing emails across multiple senders.

Why?

It boosts delivery rates, so your message gets through.

How?

You should aim for a natural cadence increase over time. lemwarm can automate the trouble of gradually warming up your sending, and it will monitor your deliverability.

#7 Don’t send it all at once!

Why?

Sending all your emails at once (newsletters, cold emails, and the rest) can trigger rate limits that block your emails. Go with staggered sending instead.

How?

Email automation tools, like lemlist, can help you send emails sequentially, preventing bulk sends that trigger rate limits.

Technical setup and email deliverability

#8 Set up your SPF

Why?

SPF authentication helps prevent email spoofing, so your emails are trusted and more likely to reach the inbox.

How?

Configure SPF by adding an SPF record to your domain’s DNS settings.

#9 Set up your DKIM

Why?

DKIM adds a digital signature to emails, verifying the sender’s identity and increasing deliverability.

How?

Implement DKIM by creating and configuring DKIM records in your DNS.

#10 Set up your DMARC

Why?

DMARC protects your domain from unauthorized use and improves email deliverability and security.

How?

Implement DMARC by adding a DMARC record to your DNS and configuring it according to your policy preferences.

#11 Set up a custom tracking domain

Why?

A custom tracking domain improves brand consistency and email deliverability, reducing the risk of being marked as spam.

How?

Create and verify your custom tracking domain following the guidelines in your lemlist settings, then integrate it with your email campaigns.

#12 Optimize your Google profile

Why?

An optimized Google profile means your emails are recognized and trusted by recipients, boosting open rates.

How?

Keep your Google profile accurate and updated, including your name, logo, and contact details, to maintain consistency and professionalism in your email communications.

#13 Use a simple email signature

Why?

A busy signature can overwhelm your recipient.

How?

Steer clear of intricate HTML. Opt for simple, lightweight designs. Use lemlist’s signature generator to get the best email signature in seconds.

#14 Avoid attachments

Why?

They can get you flagged for spam. Check Point Research reports that 68% of malicious cyberattacks are delivered through email, with PDFs accounting for 22% of malicious attachments. Spam filters know this, and so do your prospects.

How?

Opt for Google Drive links instead. If you have to include attachments, limit it to one or two per email and make sure your email isn’t filled with spam words.

#15 Add an opt-out option

Why?

In many places, an opt-out is required by law.

How?

For US readers, the CAN-SPAM law states that opt-out mechanisms are non-negotiable.

#16 Don’t worry too much about perfect timing

We tested this. Timing doesn’t make a big difference. Focus on writing a great email instead.

Although timing may not be a major factor, you can slightly increase your chances of a reply by sending your emails on the right day.

#17 Use a dedicated outreach domain

Why?

It protects your main email reputation and avoids deliverability problems.

How?

Create a secondary domain for cold emails, especially for larger sales teams.

Cold email personalization tips

#18 Experiment with subject lines

Why?

Effective subject lines boost open rates.

How?

Find what works for your audience by playing with variations and tracking the results.

#19 Address your prospect by name

This is the starting point of every personalization tactic.

What if you don’t have their first name? If you’re working with bigger lists and worry that some prospects don’t have a first name, lemlist has a nifty feature called the ‘fallback value’ to curb this concern.

Simply use {{variable|fallback}}. In our case it would look like this: {{firstname|lemlister}}

#20 Use tiramisu intro lines

Why?

First impressions matter. Your intro line sets the tone of your email and decides if the reader stays engaged.

How?

Focus on the prospect in your intro lines. Avoid talking about yourself or your company initially. Use the Tiramisu Strategy for a layered approach.

#21 Delay your pitch

Why?

Rushing to the pitch can turn off prospects. Start with a conversation to build rapport.

How?

Focus on establishing a connection first. This makes pitching more natural and effective later.

#22 Use a powerful CTA

Why?

A clear, singular call-to-action (CTA) is more effective than multiple, confusing ones.

How?

Craft one strong CTA for your email. It should be direct and easy to understand, guiding the reader to the next step without any ambiguity.

#23 Follow up

Why?

Persistence pays off. Many responses come from follow-up emails.

How?

If you don’t get a reply initially, don’t hesitate to send a follow-up email. It can be the nudge that turns a prospect into a conversation.

#24 A/B test everything!

Why?

Testing beats guessing. A/B testing reveals what truly resonates with your audience.

How?

Implement A/B testing in your campaigns. Experiment with different elements like subject lines, email body, or CTAs to understand your audience’s preferences and improve based on data.

Running ‘LinkedIn x cold email’ outreach campaigns? Check out our guide to personalize them at scale.

Cold email KPIs to track

#25 Open rate > 50%

If you’re seeing open rates over 50%, you’re doing well. Your emails are getting noticed. If not, there could be deliverability issues. This deliverability checklist might help you identify and fix the problem.

#26 Click rate > 40%

If your click rate is hitting above 40%, you’re connecting with your audience and leading them to take action. If it’s lower, it’s time to reevaluate your content or call-to-action to make sure they’re compelling enough.

#27 Reply rate > 8%

A reply rate above 8% is a strong indicator that your emails are resonating and engaging. If you’re falling short, it might be worth revising your email’s tone, content, or personalization to encourage more responses.

#28 Bounce rate > 5%

If your bounce rate is over 5%, that’s a red flag. It suggests issues with your email list quality or outdated contacts. Remember to clean up your list regularly.

General tips

#29 Don’t spam

Why?

Spam complaints damage your sender reputation and email deliverability.

How?

Focus on sending relevant, valuable content to the right audience. Monitor engagement and unsubscribe rates so your emails stay well-received and never verge into spam territory.

#30 Create cold email templates

Why?

Templates streamline your email process and keep your best communications consistent.

How?

Identify and save your best-performing cold emails as templates. This saves time and lets you replicate successful strategies across different campaigns.

Need inspiration? Use the most complete cold email template hub ever created.

Bonus hacks for lemlisters

Not a lemlister? We’d be honored to welcome you to the family. To join:

Sign up for a free trial (no credit card required) to play with lemlist’s powerful email features.
Join the Outbound Hub for genuine connections, real support, and first-hand sales knowledge.

Back to the tips.

#31 Add dynamic first names onto images

Why?

Personalizing images with the recipient’s first name increases engagement and shows attention to detail, so your emails stand out in a crowded inbox.

lemlist tutorial: How to add the {{firstName}} tag onto the image

#32 Include their company logo

Why?

Using a prospect’s logo personalizes your email, boosting relevance and engagement.

lemlist tutorial: How to add company logos to your emails

#33 Add web screenshots

Add screenshots of your prospect’s websites to hook them from the start.

lemlist tutorial: How to add personalized website screenshots

#34 Use video thumbnails

A failproof strategy to build trust and ramp up reply rates.

lemlist tutorial: How to create a personalized video thumbnail

Want to go further? lemlist’s Smart Messaging also has voice cloning. Record yourself once, and lemlist generates personalized audio notes at scale, in your voice and cadence, sent to every prospect on your list.

#35 Send unique links

Depending on your cold email strategy, you can personalize and send unique links to prospects at scale to increase engagement.

lemlist tutorial: How to personalize your links

#36 Use liquid syntax

Adjust your message to fit the context.

lemlist tutorial: How to use liquid syntax in your cold emails

#37 Utilize spin syntax

Adapting your message with spin syntax keeps emails contextually relevant and highly personalized (for example, deliver 5 different types of intro lines).

lemlist tutorial: How to use spin syntax in your cold emails

#38 Create dynamic landing pages

Dynamic landing pages tailor the user experience, increasing relevance and conversion rates.

lemlist tutorial: How to use dynamic landing pages in lemlist

#39 Review before you send!

Before you send cold emails in lemlist, you enter the review stage. This lets you check the campaign one last time. Use this opportunity to further customize your emails (for example, change the intro line for a prospect you’ve met before).

#40 Auto-extract LinkedIn emails

Use the new lemlist Chrome extension to target LinkedIn prospects, extract their emails, and send outbound campaigns on auto-pilot.

#41 Work with Google Sheets

Use our Google Sheet integration to send campaigns on auto-pilot as soon as you add a new prospect to your sheet.

#42 Automate notifications!

Hook Slack into lemlist and automatically get notified when replies roll in.

#43 Connect your CRM!

Browse our integrations to connect the tools you already use.

#44 Organize your campaigns

Use lemlist labels for clearer insights and focused reports. Label campaigns by clients or objectives for better tracking.

#45 Keep trying!

Persistence is the whole game. Test, learn, and send the next one.

Frequently asked questions

Is cold email still effective in 2026?

Belkins’ 2026 study pegged the average B2B reply rate at 0.45%, measured as replies divided by total emails sent (including bounces). That sounds bleak, but it means most senders are doing it wrong. With tight targeting, real personalization, and consistent follow-up, cold email still fills pipelines.

Is cold emailing legal?

Yes, if you follow the rules. In the US, CAN-SPAM requires a clear opt-out link and accurate sender info. Other regions have their own frameworks. Stay compliant, and you’re fine.

How many cold emails should I send per day?

Start with 50–200 per sender mailbox. Warm up each mailbox gradually before scaling. If you need higher volume, split sends across multiple mailboxes and domains to protect deliverability.

How do I personalize cold emails at scale?

Use AI to do the heavy lifting. lemlist’s Smart Messaging generates AI Variables and even clones your voice for personalized audio notes. lemAgent can build targeted campaigns from a plain-language prompt, pulling leads that match your ICP and enriching them automatically.

Over to you

You’ve got 45 ways to sharpen your cold outreach, from ICP research to deliverability hygiene to personalization that scales. The difference between the 0.45% average and a reply rate you can build a pipeline on comes down to execution.

If you want to put these tips into practice without stitching together five different tools, lemlist brings lead data, enrichment, multichannel campaigns, and deliverability into one platform. Start a 14-day free trial or book a demo and see how it fits your workflow. We’re rated 4.6/5 on G2, and the trial is no-commitment.

Your move.

Rémi Kokabi

Hi there, I’m Rémi, Senior Sales at lemlist. Like you, I go from sales meeting to sales meeting - and somewhere in between, I tried to share the no-fluff content pieces I wish I’d read when I first started