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Instant DKIM Record Generation for Better Email Deliverability

DKIM (DomainKeys Identified Mail) helps email providers verify that emails sent from your domain are legitimate, preventing spoofing and phishing attacks. Smartlead’s DKIM Generator lets you generate your DKIM record with just a few clicks.

SPF Record Generator

Ensure you send emails only through your authorized servers and reduce spoofing risks while improving deliverability. 

Generate SPF Record Now

DKIM Record generator

Check if DKIM records are set up correctly for your domain. Ensure your email authentication policies protect your domain. 

Get DKIM Record

4 Simple Steps to Generate a DKIM Record

A Spam Checker scans your email copy and identifies the words and phrases that trigger spam filters. Once the spam word checker identifies these red flags, you can edit them and ensure your emails land in your recipient's inboxes. The email spam detector lets you optimize emails for better deliverability and higher engagement. Below is the step-by-step process of how to use the Email Spam Checker.

Step 1

Enter Your Domain

Input your domain name in the field.
Step 2

Select a DKIM Selector

Choose or generate a unique DKIM selector.
Step 3

Choose Key Size

Select the key size for your DKIM record. Most providers recommend 1024-bit or 2048-bit for enhanced security.
Step 4

Copy & Add to DNS

Copy the generated DKIM TXT record and add it to your domain’s DNS settings.

What is DKIM and Why Is It Important?

DMARC (Domain-based Message Authentication, Reporting & Conformance) is a protocol. It protects your domain and ensures that only authorized senders can send emails using the domain.

DKIM (DomainKeys Identified Mail) is an email authentication protocol that verifies email legitimacy by attaching a digital signature to outgoing messages. Email providers use DKIM signatures to ensure emails are not altered during transmission.

  • Reduces the risk of spoofing and phishing

  • Improves sender reputation and email deliverability

  • Prevents emails from being flagged as spam

Use cases: When to run a spam test

A spam checker works as an essential tool for any business or marketer looking to maintain the sender's reputation. Here are the common use case scenarios for using a spam checker.

When Should You Use a DKIM Generator?

Without DKIM, your emails may be flagged as spam or fail authentication checks. Scammers can spoof your domain, ISPs can block your messages, and your email campaigns can fail before they start.

Someone Is Spoofing Your Business Emails

You receive complaints from customers about emails they supposedly got from your company—except you never sent them. Email spoofing can destroy brand trust. DKIM prevents this by ensuring that only emails signed with your domain’s unique key are recognized as legitimate.

Your Marketing Emails Are Going to Spam

You created a full-proof email campaign. It’s engaging, it adds value to the users—but as you send it out, the emails land in the spam folder. The reason can be missing DKIM authentication. Without DKIM records, mailbox providers can’t verify that the email is really from you. So, if you are sending marketing emails, generate a DKIM record and authenticate your messages to land in inboxes, not spam.

Your Transactional Emails Aren’t Reaching Users

Customers rely on you for order confirmations, password resets, and important notifications. If these emails aren’t authenticated with DKIM, they may be flagged as suspicious or even rejected by the recipient’s email provider or land in the spam box. Implement DKIM to ensure your emails reach inboxes.

You’re Running a Cold Email Outreach Campaign

B2B cold outreach can be tricky. If your emails aren’t authenticated, they’re more likely to be blocked. DKIM helps establish credibility, giving your emails a higher chance of being opened and read by prospects.

You Want Better Email Analytics and Trust from ISPs

Internet Service Providers (ISPs) track your sender's reputation. Emails without authentication can lower your sender score, reducing deliverability over time. DKIM helps you maintain a positive sender reputation and provides better tracking for email analytics tools.

What Our Customers Say

I can upload hundreds of email accounts, send thousands of cold emails per day, and still have an organized master inbox. This is unseen with any other tool on the market today. I looked...

Mykyta

CEO, Yell Cut

4.5
I've personally built a sales engagement platform similar to Smartlead, and I am genuinely blown away by the scalability, functionality and more. We're a B2B Lead Gen Agency, and we primarily use cold email to generate leads for our clients. We're on track to double our best month in terms of client results.

Nick A.

Founder, Leadbird.io

4.5
Smartlead is an innovative cold email platform that helps me reach out to potential clients. There are easy-to-use templates, powerful automation tools, and intuitive analytics for email warming and campaign analytics. It provides me with everything I need to maximize my cold email campaigns.

Reggie B.

Sales Director - Financial Institution Solutions Saggezza, Inc.

4.5
Smartlead is an absolute game-changer! With its exceptional features and support from the Smartlead team, I've experienced remarkable success. The customizable platform and cost-effective pricing have revolutionized our cold emailing game. I would rate it 10 out of 10 for satisfaction. A must-have tool for any B2B agency!

Romain Osman

Co-Founder, Five Element

4.5
Innovative, reliable, and Suitable For Technical and Non-Technical Users. SmartLead's ability to help me land in the primary inbox and automate the laborious parts of my workflow is brilliant. The customer support is incredibly good, I've had some great feedback on my cold email campaigns.

Ryane Tully

Co-founder, Pitchlane

4.5
Hands down the best cold email software. Smartlead is amazing, this is the best tool if you want to cold email at scale and land in the inbox. The team is super responsive with great support. While there is a learning curve to cold email, they really built a great foundation to make it as simple as possible. I am sending over 2k emails a day!!! absolute game changer for my business.

Eden Einav

Account Executive, B.I.G. Charity Law Group Professional Corporation

4.5
Intuitive. Game-Changing. POWERFUL. Analytics, spintax, A/B testing, quick personalization. This is a game changer if you send cold email campaign. Grateful to this team for building a product that has changed our day to day. 🚀

David Borman

Senior Account Executive, Key Outreach

4.5
The best outbound email marketing software. Customer support - they are so responsive and helpful Features - you can add multiple email domains to the same account.

Bojan Najdov

Founder, Lambda Group

4.5
Smartlead has been extremely helpful with seamlessly onboarding clients, warming up their accounts, and prepping campaigns to send at high volumes while maintaining high deliverability. There are multiple features that allow me to track performance over time and understand when it is time for me to make adjustments, and Vaibhav is constantly making improvements/upgrades to the platform which gives me all the more faith in the future of this great tool.

Dino Knezovic

Founder, Office Optim

4.5
Smartlead is absolutely amazing! The software is easy to understand I am not a techie but directly understand everything and if you really have a question the team always helps instantly. Additionally I love all the features. Like I said for me as a lead generation agency the software gives me everything I need and much more.

Johannes Fessler

CEO, Rock Solid Lead Generation

4.5
Terrific platform for agencies. The platform is intuitive and makes it easy to manage multiple client accounts. I love the email warmup feature, the sub-accounts, and the branded client portal. Deliverability and analytics are solid. Great customer support.

Kris Sharma

Founder, Webinar Dude

4.5
Total game changer for cold outreach. Packed with features: Spintax, Rotating Inboxes, AI Email Categorization, Subsequences, Tagging, and Whitelabeling. Their team is SUPER responsive and implements changes quickly, and it is the most reliable cold email tool I've ever used.

Matthew Lucero

Founder, Anevo Marketing

4.5
Best Cold Email Marketing Tool for individuals as well as agencies. Smartlead has simplified email marketing to another infinity. With their domain rotation, email warmups and unified inbox, this is an absolute gamechanger in the industry right now. With such an affordable pricepoint, they really offer you the best bang for the buck and superseeds any email automation tool in the market like salesloft/outreach or reply. Vaibhav is more than just an amazing guy, who is super helpful and approachable. This tool would guarenteed be the next best thing in the market and the best part is they never stop innovating. Complete no brainer to opt for this against any other tool that you are using for email outreach at the current moment. Trust me you wouldn't be disappointed. Review collected by and hosted on G2.com.

Abhishek Basu

Account Executive, Leadzilla

4.5
Best cold email tool in the game. Most user friendly cold email tool I've used to date. Super easy to set up, love the bulk upload feature to add multiple domains at once and support is impeccable. They respond so fast it's unreal. Review collected by and hosted on G2.com.

Serdar Tufan

Owner, FunnelVision

4.5
I just ended my 2 year search for the right cold emailing platform with Smartlead. A stand alone tool for cold emailing unlike anything else in the market. And it looks like they're only getting started. Now I can finally train my VAs on just one platform instead of bouncing between several like they used to for different things.

Cliff Coelho

Owner, Storydriven.video

4.5
Best cold outbound email software out there. Everything, is fast, reliable, scalable, you can also white-label, amazing analytics and never breaks like other similar competitors. Never once I went in spam in the last 4 months of using it.

Arnold Koci

CEO, Acquisizioneclienti.it

4.5
Smartlead is an absolute game-changer! With its exceptional features and support from the Smartlead team, I've experienced remarkable success. The customizable platform and cost-effective pricing have revolutionized our cold emailing game. I would rate it 10 out of 10 for satisfaction. A must-have tool for any B2B agency!

Romain Osman

Co-Founder, Five Element

4.5
Our campaigns weren't just about reaching out, but reaching out right, and Smartlead helped us achieve this. It has added immense value to our business by prioritizing email deliverability and customer needs. I would rate it a 9 out of 10

Lucas Maliczak

Outbound Lead & Partner, Peakora

4.5
Smartlead is simply amazing. They constantly improve their product and bring new features that make the cold email software even more complete. If you're a big automation enthusiast like me, there are no other cold email tools on the market that allow you to 100% automate your business as Smartlead does.

René-Karl Lambert

Founder, WindGrowth

4.5
Intuitive. Game-Changing. POWERFUL. Analytics, spintax, A/B testing, quick personalization. This is a game changer if you send cold email campaign. Grateful to this team for building a product that has changed our day to day. 🚀

David Borman

Senior Account Executive, Key Outreach

4.5
The best outbound email marketing software. Customer support - they are so responsive and helpful Features - you can add multiple email domains to the same account.

Bojan Najdov

Founder, Lambda Group

4.5
Smartlead has been extremely helpful with seamlessly onboarding clients, warming up their accounts, and prepping campaigns to send at high volumes while maintaining high deliverability. There are multiple features that allow me to track performance over time and understand when it is time for me to make adjustments, and Vaibhav is constantly making improvements/upgrades to the platform which gives me all the more faith in the future of this great tool.

Dino Knezovic

Founder, Office Optim

4.5
Smartlead is absolutely amazing! The software is easy to understand I am not a techie but directly understand everything and if you really have a question the team always helps instantly. Additionally I love all the features. Like I said for me as a lead generation agency the software gives me everything I need and much more.

Johannes Fessler

CEO, Rock Solid Lead Generation

4.5
Terrific platform for agencies. The platform is intuitive and makes it easy to manage multiple client accounts. I love the email warmup feature, the sub-accounts, and the branded client portal. Deliverability and analytics are solid. Great customer support.

Kris Sharma

Founder, Webinar Dude

4.5
Total game changer for cold outreach. Packed with features: Spintax, Rotating Inboxes, AI Email Categorization, Subsequences, Tagging, and Whitelabeling. Their team is SUPER responsive and implements changes quickly, and it is the most reliable cold email tool I've ever used.

Matthew Lucero

Founder, Anevo Marketing

4.5
Best Cold Email Marketing Tool for individuals as well as agencies. Smartlead has simplified email marketing to another infinity. With their domain rotation, email warmups and unified inbox, this is an absolute gamechanger in the industry right now. With such an affordable pricepoint, they really offer you the best bang for the buck and superseeds any email automation tool in the market like salesloft/outreach or reply. Vaibhav is more than just an amazing guy, who is super helpful and approachable. This tool would guarenteed be the next best thing in the market and the best part is they never stop innovating. Complete no brainer to opt for this against any other tool that you are using for email outreach at the current moment. Trust me you wouldn't be disappointed. Review collected by and hosted on G2.com.

Abhishek Basu

Account Executive, Leadzilla

4.5
Best cold email tool in the game. Most user friendly cold email tool I've used to date. Super easy to set up, love the bulk upload feature to add multiple domains at once and support is impeccable. They respond so fast it's unreal. Review collected by and hosted on G2.com.

Serdar Tufan

Owner, FunnelVision

4.5
I just ended my 2 year search for the right cold emailing platform with Smartlead. A stand alone tool for cold emailing unlike anything else in the market. And it looks like they're only getting started. Now I can finally train my VAs on just one platform instead of bouncing between several like they used to for different things.

Cliff Coelho

Owner, Storydriven.video

4.5
Best cold outbound email software out there. Everything, is fast, reliable, scalable, you can also white-label, amazing analytics and never breaks like other similar competitors. Never once I went in spam in the last 4 months of using it.

Arnold Koci

CEO, Acquisizioneclienti.it

4.5
Smartlead is an absolute game-changer! With its exceptional features and support from the Smartlead team, I've experienced remarkable success. The customizable platform and cost-effective pricing have revolutionized our cold emailing game. I would rate it 10 out of 10 for satisfaction. A must-have tool for any B2B agency!

Romain Osman

Co-Founder, Five Element

4.5
Our campaigns weren't just about reaching out, but reaching out right, and Smartlead helped us achieve this. It has added immense value to our business by prioritizing email deliverability and customer needs. I would rate it a 9 out of 10

Lucas Maliczak

Outbound Lead & Partner, Peakora

4.5
Smartlead is simply amazing. They constantly improve their product and bring new features that make the cold email software even more complete. If you're a big automation enthusiast like me, there are no other cold email tools on the market that allow you to 100% automate your business as Smartlead does.

René-Karl Lambert

Founder, WindGrowth

4.5
Total game changer for cold outreach. Packed with features: Spintax, Rotating Inboxes, AI Email Categorization, Subsequences, Tagging, and Whitelabeling. Their team is SUPER responsive and implements changes quickly, and it is the most reliable cold email tool I've ever used.

Matthew Lucero

Founder, Anevo Marketing

4.5
Best Cold Email Marketing Tool for individuals as well as agencies. Smartlead has simplified email marketing to another infinity. With their domain rotation, email warmups and unified inbox, this is an absolute gamechanger in the industry right now. With such an affordable pricepoint, they really offer you the best bang for the buck and superseeds any email automation tool in the market like salesloft/outreach or reply. Vaibhav is more than just an amazing guy, who is super helpful and approachable. This tool would guarenteed be the next best thing in the market and the best part is they never stop innovating. Complete no brainer to opt for this against any other tool that you are using for email outreach at the current moment. Trust me you wouldn't be disappointed. Review collected by and hosted on G2.com.

Abhishek Basu

Account Executive, Leadzilla

4.5
Best cold email tool in the game. Most user friendly cold email tool I've used to date. Super easy to set up, love the bulk upload feature to add multiple domains at once and support is impeccable. They respond so fast it's unreal. Review collected by and hosted on G2.com.

Serdar Tufan

Owner, FunnelVision

4.5
I just ended my 2 year search for the right cold emailing platform with Smartlead. A stand alone tool for cold emailing unlike anything else in the market. And it looks like they're only getting started. Now I can finally train my VAs on just one platform instead of bouncing between several like they used to for different things.

Cliff Coelho

Owner, Storydriven.video

4.5
Best cold outbound email software out there. Everything, is fast, reliable, scalable, you can also white-label, amazing analytics and never breaks like other similar competitors. Never once I went in spam in the last 4 months of using it.

Arnold Koci

CEO, Acquisizioneclienti.it

4.5
Smartlead is an absolute game-changer! With its exceptional features and support from the Smartlead team, I've experienced remarkable success. The customizable platform and cost-effective pricing have revolutionized our cold emailing game. I would rate it 10 out of 10 for satisfaction. A must-have tool for any B2B agency!

Romain Osman

Co-Founder, Five Element

4.5
Our campaigns weren't just about reaching out, but reaching out right, and Smartlead helped us achieve this. It has added immense value to our business by prioritizing email deliverability and customer needs. I would rate it a 9 out of 10

Lucas Maliczak

Outbound Lead & Partner, Peakora

4.5
Smartlead is simply amazing. They constantly improve their product and bring new features that make the cold email software even more complete. If you're a big automation enthusiast like me, there are no other cold email tools on the market that allow you to 100% automate your business as Smartlead does.

René-Karl Lambert

Founder, WindGrowth

4.5

Frequently Asked Questions

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Still Have Questions ?

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What are DKIM Selectors?

DKIM selectors are used to distinguish multiple DKIM keys that might exist for a domain. It allows email recipients to know which key to use when verifying the signature in the email header. A DKIM selector is typically added to the record as part of the DNS entry and helps identify which public key to use for email verification.

How to get a public key for DKIM?

The public key for DKIM is generated as part of your DKIM record. Smartlead DKIM generator tool creates both the private and public keys. You can copy the public key and paste it as a TXT record to your DNS settings. It allows email receivers to verify the DKIM signature.

 Is DKIM free?

Yes, DKIM itself is free to implement. You can generate the DKIM record on Smartlead’s DKIM Generator without any cost. However, if you’re using a premium DNS service, there might be some costs associated with the DNS hosting.

Who provides the DKIM key?

The DKIM key is typically generated by the sender’s email server or a third-party service. Many email providers (like Google Workspace or Microsoft 365) offer DKIM generation as part of their email setup, but you can also generate DKIM keys using specialized tools like Smartlead’s DKIM Generator.

Can I have two DKIM records?

Yes, it’s possible to have two DKIM records for a domain. This is useful if you have multiple email servers or third-party services sending emails on behalf of your domain. Each service can use a different DKIM key and selector.

 How do I publish a DKIM record?

To publish a DKIM record, you need to add it as a TXT record in your domain’s DNS settings. Log into your DNS hosting provider’s control panel (such as GoDaddy, Cloudflare, etc.), and paste the DKIM record provided by your DKIM generator tool. After the record is saved, it will be available for email servers to verify the authenticity of your emails.

Can I use DKIM without SPF?

Yes, DKIM can be used independently of SPF (Sender Policy Framework). However, both DKIM and SPF should be used together for stronger email authentication. DKIM verifies the sender’s identity using cryptographic signatures, while SPF ensures that the sender’s IP address is authorized to send emails on behalf of your domain.

How is DKIM verified?

DKIM is verified by email receivers (such as Gmail, Yahoo, or Outlook). When an email is sent, the email provider checks the DKIM signature in the email header against the public key in the DNS record of the sender’s domain. If the signature matches the key, the email is verified as legitimate. If not, it may be flagged as suspicious or marked as spam.

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Instant DKIM Record Generation for Better Email Deliverability

DKIM (DomainKeys Identified Mail) helps email providers verify that emails sent from your domain are legitimate, preventing spoofing and phishing attacks. Smartlead’s DKIM Generator lets you generate your DKIM record with just a few clicks.

SPF Record Generator

Ensure you send emails only through your authorized servers and reduce spoofing risks while improving deliverability. 

Generate SPF Record Now

DMARC Record Checker

Check if DMARC records are set up correctly for your domain. Ensure your email authentication policies protect your domain. 

Verify DMARC Set up

4 Simple Steps to Generate a DKIM Record

A Spam Checker scans your email copy and identifies the words and phrases that trigger spam filters. Once the spam word checker identifies these red flags, you can edit them and ensure your emails land in your recipient's inboxes. The email spam detector lets you optimize emails for better deliverability and higher engagement. Below is the step-by-step process of how to use the Email Spam Checker.

Step 1

Enter Your Domain

Input your domain name in the field.
Step 2

Select a DKIM Selector

Choose or generate a unique DKIM selector.
Step 3

Choose Key Size

Select the key size for your DKIM record. Most providers recommend 1024-bit or 2048-bit for enhanced security.
Step 4

Copy & Add to DNS

Copy the generated DKIM TXT record and add it to your domain’s DNS settings.

What is DKIM and Why Is It Important?

DKIM (DomainKeys Identified Mail) is an email authentication protocol that verifies email legitimacy by attaching a digital signature to outgoing messages. Email providers use DKIM signatures to ensure emails are not altered during transmission.

  • Reduces the risk of spoofing and phishing
  • Improves sender reputation and email deliverability
  • Prevents emails from being flagged as spam
consistent-land-img

Use cases: When to run a spam test

A spam checker works as an essential tool for any business or marketer looking to maintain the sender's reputation. Here are the common use case scenarios for using a spam checker,

When Should You Use a DKIM Generator?

Without DKIM, your emails may be flagged as spam or fail authentication checks. Scammers can spoof your domain, ISPs can block your messages, and your email campaigns can fail before they start.

Your Marketing Emails Are Going to Spam

You created a full-proof email campaign. It’s engaging, it adds value to the users—but as you send it out, the emails land in the spam folder. The reason can be missing DKIM authentication. Without DKIM records, mailbox providers can’t verify that the email is really from you. So, if you are sending marketing emails, generate a DKIM record and authenticate your messages to land in inboxes, not spam.

Someone Is Spoofing Your Business Emails

You receive complaints from customers about emails they supposedly got from your company—except you never sent them. Email spoofing can destroy brand trust. DKIM prevents this by ensuring that only emails signed with your domain’s unique key are recognized as legitimate.

Your Transactional Emails Aren’t Reaching Users

Customers rely on you for order confirmations, password resets, and important notifications. If these emails aren’t authenticated with DKIM, they may be flagged as suspicious or even rejected by the recipient’s email provider or land in the spam box. Implement DKIM to ensure your emails reach inboxes.

You’re Running a Cold Email Outreach Campaign

B2B cold outreach can be tricky. If your emails aren’t authenticated, they’re more likely to be blocked. DKIM helps establish credibility, giving your emails a higher chance of being opened and read by prospects.

You Want Better Email Analytics and Trust from ISPs

Internet Service Providers (ISPs) track your sender's reputation. Emails without authentication can lower your sender score, reducing deliverability over time. DKIM helps you maintain a positive sender reputation and provides better tracking for email analytics tools.

Frequently Asked Questions

General Questions

What are DKIM Selectors?

Email automation FAQs- Smartlead

DKIM selectors are used to distinguish multiple DKIM keys that might exist for a domain. It allows email recipients to know which key to use when verifying the signature in the email header. A DKIM selector is typically added to the record as part of the DNS entry and helps identify which public key to use for email verification.

How to get a public key for DKIM?

Email automation FAQs- Smartlead

The public key for DKIM is generated as part of your DKIM record. Smartlead DKIM generator tool creates both the private and public keys. You can copy the public key and paste it as a TXT record to your DNS settings. It allows email receivers to verify the DKIM signature.

 Is DKIM free?

Email automation FAQs- Smartlead

Yes, DKIM itself is free to implement. You can generate the DKIM record on Smartlead’s DKIM Generator without any cost. However, if you’re using a premium DNS service, there might be some costs associated with the DNS hosting.

    Who provides the DKIM key?

    Email automation FAQs- Smartlead

    The DKIM key is typically generated by the sender’s email server or a third-party service. Many email providers (like Google Workspace or Microsoft 365) offer DKIM generation as part of their email setup, but you can also generate DKIM keys using specialized tools like Smartlead’s DKIM Generator.

    Can I have two DKIM records?

    Email automation FAQs- Smartlead

    Yes, it’s possible to have two DKIM records for a domain. This is useful if you have multiple email servers or third-party services sending emails on behalf of your domain. Each service can use a different DKIM key and selector.

     How do I publish a DKIM record?

    Email automation FAQs- Smartlead

    To publish a DKIM record, you need to add it as a TXT record in your domain’s DNS settings. Log into your DNS hosting provider’s control panel (such as GoDaddy, Cloudflare, etc.), and paste the DKIM record provided by your DKIM generator tool. After the record is saved, it will be available for email servers to verify the authenticity of your emails.

    Can I use DKIM without SPF?

    Email automation FAQs- Smartlead

    Yes, DKIM can be used independently of SPF (Sender Policy Framework). However, both DKIM and SPF should be used together for stronger email authentication. DKIM verifies the sender’s identity using cryptographic signatures, while SPF ensures that the sender’s IP address is authorized to send emails on behalf of your domain.

    How is DKIM verified?

    Email automation FAQs- Smartlead

    DKIM is verified by email receivers (such as Gmail, Yahoo, or Outlook). When an email is sent, the email provider checks the DKIM signature in the email header against the public key in the DNS record of the sender’s domain. If the signature matches the key, the email is verified as legitimate. If not, it may be flagged as suspicious or marked as spam.

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