Knowing exactly how to check competitors' email marketing is one of the most underused advantages in digital marketing. Email generates an average return of $36 for every $1 spent, which means the strategies your competitors use to capture that ROI are worth understanding in detail. This guide shows you exactly how to do it, from free manual methods to purpose-built tools, and what signals to act on once you have the data.
Key Takeaways
Competitor email monitoring involves tracking and analyzing your competitors' email marketing strategies by subscribing to their newsletters, promotional emails, and announcements, so you can understand their content, sending frequency, and audience engagement tactics.
You should conduct this analysis at least once a year, since subscriber behavior and email marketing trends change.
Subject line analysis reveals competitor messaging strategies, including length patterns, emoji usage, urgency tactics, and personalization approaches.
Free tools like SendView's ESP Finder let you identify which email service provider your competitors use at no cost.
The goal is not to copy, but to find gaps, benchmarks, and opportunities to improve your own campaigns.
Why Analyzing Competitor Email Marketing Matters
Several industry sources place the average email marketing ROI at $42 for every dollar spent, making it the highest-returning digital marketing channel across sectors. With those stakes, understanding what your competitors are doing in the inbox is a direct investment in your own performance.
Competitor email monitoring helps you identify what content, themes, and strategies resonate with your shared audience, stay informed about seasonal promotions and campaign timing, and analyze subject lines, CTAs, and email designs that consistently drive engagement.
A competitor email analysis also gives you insight into their blind spots. What are they not doing that you're great at? What opportunities can you seize to stand out in people's inboxes?
The process has one clear rule: this practice is not about copying, but about learning what works in your industry and identifying opportunities to refine your own approach.
Step 1: Subscribe to Competitor Lists the Right Way
Knowing exactly how to check competitors' email marketing is one of the most underused advantages in digital marketing. Email generates an average return of $36 for every $1 spent, which means the strategies your competitors use to capture that ROI are worth understanding in detail. This guide shows you exactly how to do it, from free manual methods to purpose-built tools, and what signals to act on once you have the data.
Key Takeaways
Competitor email monitoring involves tracking and analyzing your competitors' email marketing strategies by subscribing to their newsletters, promotional emails, and announcements, so you can understand their content, sending frequency, and audience engagement tactics.
You should conduct this analysis at least once a year, since subscriber behavior and email marketing trends change.
Subject line analysis reveals competitor messaging strategies, including length patterns, emoji usage, urgency tactics, and personalization approaches.
Free tools like SendView's ESP Finder let you identify which email service provider your competitors use at no cost.
The goal is not to copy, but to find gaps, benchmarks, and opportunities to improve your own campaigns.
Why Analyzing Competitor Email Marketing Matters
Several industry sources place the average email marketing ROI at $42 for every dollar spent, making it the highest-returning digital marketing channel across sectors. With those stakes, understanding what your competitors are doing in the inbox is a direct investment in your own performance.
Competitor email monitoring helps you identify what content, themes, and strategies resonate with your shared audience, stay informed about seasonal promotions and campaign timing, and analyze subject lines, CTAs, and email designs that consistently drive engagement.
A competitor email analysis also gives you insight into their blind spots. What are they not doing that you're great at? What opportunities can you seize to stand out in people's inboxes?
The process has one clear rule: this practice is not about copying, but about learning what works in your industry and identifying opportunities to refine your own approach.
Step 1: Subscribe to Competitor Lists the Right Way
The most direct way to monitor competitor emails is to subscribe to their lists. Use a personal email address or create a dedicated one for this purpose. This gives you a front-row seat to their entire email marketing strategy from a customer's perspective.
Do not just sign up for the general newsletter. Make sure to also take all the necessary actions to trigger browse abandonment, cart abandonment, purchase confirmation, and other action-based emails. Yes, this means you will need to invest some money to buy competitors' products just to see what type of emails they send.
Once subscribed, stay organized. Maintain a simple spreadsheet to log key details about each email you receive, including columns for the date sent, subject line, type of email (promotional, newsletter), and any unique design or content elements.
Organize the emails you receive into folders for each competitor. This keeps your primary inbox clean and makes it simple to compare email strategies. Over time, you will build a library of their marketing efforts that you can reference anytime.
Pay close attention to the welcome sequence especially. It usually reveals the most about how a brand positions itself, structures its automation, and onboards new subscribers. For a deeper look at how welcome sequences work, see our guide on Welcome Email Sequence Best Practices.
Step 2: What to Look for in Every Competitor Email
Subscribing is just the start. The analysis itself happens when you know which signals to track.
Subject Lines and Preheaders
Subject line analysis reveals competitor messaging strategies, including length patterns, emoji usage, urgency tactics, and personalization approaches. Examine which subject lines generate higher engagement and identify successful formulas that can be adapted for your own campaigns.
Look at what makes their subject lines stand out: are they short and punchy, or long and descriptive? Note how they create curiosity or urgency, such as using time-sensitive phrases or intriguing questions.
For data on what actually moves open rates, our piece on Email Subject Line Best Practices That Boost Open Rates by 27% covers the research in detail.
Email Design and Layout
When evaluating competitor email design, focus on whether the colors, fonts, and imagery are cohesive and brand-aligned; how well their emails display on different devices; and whether the content is easy to skim with clear headers and ample white space.
Content analysis focuses on email structure, visual design trends, copy tone, and value propositions. Evaluate how competitors balance promotional content with educational materials, their use of user-generated content, and their approach to seasonal campaigns and special promotions.
Sending Frequency and Timing
Track how often your competitors send emails and at what times. This can reveal patterns, such as increased frequency during specific seasons or times of the day, helping you identify their strategy.
One of the simplest but most insightful data points around competitor email timing is how long they go between campaigns. Dedicated tools display all of a competitor's emails visually in sequence, making patterns immediately visible.
CTAs, Offers, and Promotions
The most direct way to monitor competitor emails is to subscribe to their lists. Use a personal email address or create a dedicated one for this purpose. This gives you a front-row seat to their entire email marketing strategy from a customer's perspective.
Do not just sign up for the general newsletter. Make sure to also take all the necessary actions to trigger browse abandonment, cart abandonment, purchase confirmation, and other action-based emails. Yes, this means you will need to invest some money to buy competitors' products just to see what type of emails they send.
Once subscribed, stay organized. Maintain a simple spreadsheet to log key details about each email you receive, including columns for the date sent, subject line, type of email (promotional, newsletter), and any unique design or content elements.
Organize the emails you receive into folders for each competitor. This keeps your primary inbox clean and makes it simple to compare email strategies. Over time, you will build a library of their marketing efforts that you can reference anytime.
Pay close attention to the welcome sequence especially. It usually reveals the most about how a brand positions itself, structures its automation, and onboards new subscribers. For a deeper look at how welcome sequences work, see our guide on Welcome Email Sequence Best Practices.
Step 2: What to Look for in Every Competitor Email
Subscribing is just the start. The analysis itself happens when you know which signals to track.
Subject Lines and Preheaders
Subject line analysis reveals competitor messaging strategies, including length patterns, emoji usage, urgency tactics, and personalization approaches. Examine which subject lines generate higher engagement and identify successful formulas that can be adapted for your own campaigns.
Look at what makes their subject lines stand out: are they short and punchy, or long and descriptive? Note how they create curiosity or urgency, such as using time-sensitive phrases or intriguing questions.
For data on what actually moves open rates, our piece on Email Subject Line Best Practices That Boost Open Rates by 27% covers the research in detail.
Email Design and Layout
When evaluating competitor email design, focus on whether the colors, fonts, and imagery are cohesive and brand-aligned; how well their emails display on different devices; and whether the content is easy to skim with clear headers and ample white space.
Content analysis focuses on email structure, visual design trends, copy tone, and value propositions. Evaluate how competitors balance promotional content with educational materials, their use of user-generated content, and their approach to seasonal campaigns and special promotions.
Sending Frequency and Timing
Track how often your competitors send emails and at what times. This can reveal patterns, such as increased frequency during specific seasons or times of the day, helping you identify their strategy.
One of the simplest but most insightful data points around competitor email timing is how long they go between campaigns. Dedicated tools display all of a competitor's emails visually in sequence, making patterns immediately visible.
CTAs, Offers, and Promotions
Look at whether competitors use one single call-to-action or multiple. Do they stick with "Buy Now" or experiment with other phrases like "Learn More" or "Join Us"?
Do not just consider the value of coupons or discount offers. Look deeper into how the offer is presented, and when and how customers can use it. Is it extremely time-limited? Are their offers only for certain products or services?
Segmentation Signals
Look closely at how competitors tailor their emails. Competitors using dynamic subject lines, personalized greetings, or behavior-based targeting are likely relying on good segmentation.
You could find you are missing out on a certain segment of consumers, or discover that your competitors are failing to target one of your most valuable groups. Using this information, you can design campaigns to appeal to groups you have been missing, double down on groups you are winning, and pivot into areas competitors appear to be ignoring.
Step 3: Identify Which ESP Your Competitors Use
Knowing which email service provider (ESP) a competitor uses tells you a lot about their technical capabilities, automation depth, and potential deliverability performance.
Three ways to find the ESP used: manually dig into the source code for clues including domain names and links; forward emails to ESP Finder and get an answer; or use a dedicated competitor tracking platform that identifies the ESP automatically.
The simplest free option is SendView's ESP Finder. ESP Finder can identify over 315 ESPs and is 100% free. Just forward any marketing email to their address and get a result back in seconds.
For the manual method: header analysis looks for fingerprints like X-Mailchimp-User, DKIM selectors, Return-Path domains, and sending infrastructure, while body analysis scans links and images for ESP-specific tracking domains.
Some advanced tools can flag when a competitor changes their email marketing platform or starts using a new ESP for a specific type of campaign, such as abandoned cart, confirmations, or shipping updates. This helps you identify when a competitor is using a different ESP for specific types of transactional or automated emails, or when they switch completely to a new platform.
Step 4: Use Dedicated Competitor Email Tracking Tools
Manual tracking works but does not scale. These tools make the process faster and surface data you would miss otherwise.
MailCharts
MailCharts was built specifically to make competitor email analysis easier and faster. Its searchable email database of triggered and broadcast email messages from 30,000+ business and consumer brands gives you all the data you need in just a few clicks.
You can create custom groups of brands on a watchlist and get in-depth benchmarking data. It also lets you create A/B tests based on other companies' strategies, including adjusting send times, day of week, and promotional cadence.
Look at whether competitors use one single call-to-action or multiple. Do they stick with "Buy Now" or experiment with other phrases like "Learn More" or "Join Us"?
Do not just consider the value of coupons or discount offers. Look deeper into how the offer is presented, and when and how customers can use it. Is it extremely time-limited? Are their offers only for certain products or services?
Segmentation Signals
Look closely at how competitors tailor their emails. Competitors using dynamic subject lines, personalized greetings, or behavior-based targeting are likely relying on good segmentation.
You could find you are missing out on a certain segment of consumers, or discover that your competitors are failing to target one of your most valuable groups. Using this information, you can design campaigns to appeal to groups you have been missing, double down on groups you are winning, and pivot into areas competitors appear to be ignoring.
Step 3: Identify Which ESP Your Competitors Use
Knowing which email service provider (ESP) a competitor uses tells you a lot about their technical capabilities, automation depth, and potential deliverability performance.
Three ways to find the ESP used: manually dig into the source code for clues including domain names and links; forward emails to ESP Finder and get an answer; or use a dedicated competitor tracking platform that identifies the ESP automatically.
The simplest free option is SendView's ESP Finder. ESP Finder can identify over 315 ESPs and is 100% free. Just forward any marketing email to their address and get a result back in seconds.
For the manual method: header analysis looks for fingerprints like X-Mailchimp-User, DKIM selectors, Return-Path domains, and sending infrastructure, while body analysis scans links and images for ESP-specific tracking domains.
Some advanced tools can flag when a competitor changes their email marketing platform or starts using a new ESP for a specific type of campaign, such as abandoned cart, confirmations, or shipping updates. This helps you identify when a competitor is using a different ESP for specific types of transactional or automated emails, or when they switch completely to a new platform.
Step 4: Use Dedicated Competitor Email Tracking Tools
Manual tracking works but does not scale. These tools make the process faster and surface data you would miss otherwise.
MailCharts
MailCharts was built specifically to make competitor email analysis easier and faster. Its searchable email database of triggered and broadcast email messages from 30,000+ business and consumer brands gives you all the data you need in just a few clicks.
You can create custom groups of brands on a watchlist and get in-depth benchmarking data. It also lets you create A/B tests based on other companies' strategies, including adjusting send times, day of week, and promotional cadence.
Note: MailCharts only monitors a pre-selected roster of companies. If your competitor is not already being tracked, you are out of options. The platform focuses heavily on ecommerce and retail businesses.
SendView
SendView is a custom competitor email tracking solution for any industry. While a MailCharts user accesses an existing database, SendView is designed to let you track the exact companies you want in the exact way you want.
After timing analysis, SendView lets you answer questions about competitors including how long their subject lines are, what the most common words are, whether they use dark mode code, Gmail Annotations, and which ESP they use.
Panoramata
Panoramata automatically monitors your competitors' entire digital marketing strategy, including email, ads, landing pages, SMS, flows, and website changes, all from a single dashboard. It provides access to up to three years of competitor marketing data to analyze past trends, spot patterns, and refine strategy based on proven tactics.
Owletter
Owletter automatically captures all emails sent from a website to their mailing list, takes a screenshot, stores it, and analyzes it, alerting you about emails that match your criteria, so you never lose another email and can learn about your competitors' email behavior.
Step 5: Check Social Media for Email Content Clues
Many brands repurpose their email content on social media. Follow your key competitors on Facebook, X (formerly Twitter), Instagram, and LinkedIn. You can often see parts of their email campaigns without being a subscriber.
Brands often share a link to view the email in a browser or post screenshots of their newsletters. This practice extends the reach of their content marketing and provides another avenue for you to monitor competitor activities. It also reveals how their email marketing integrates with their larger social media strategy.
Set up alerts or use social listening tools to monitor mentions of your competitors online. Customers often discuss emails they receive, especially if the content or offer is noteworthy, providing an unfiltered view of how their campaigns are perceived by their target audience.
Step 6: Turn Insights into Action
Data collected through competitor email analysis is only useful if it informs real changes to your strategy.
Start by organizing your findings into a centralized system. A simple spreadsheet, Notion board, or Airtable document can work well. Document each competitor, along with key observations about their email campaigns including subject lines, visual elements, tone, CTAs, and offers.
Apply a SWOT lens to your findings:
Strengths: What are your competitors doing well? Are they using visually compelling designs, persuasive CTAs, or highly engaging subject lines?
Weaknesses: Where do their emails fall short? Are the designs cluttered or do their emails lack personalization?
Opportunities: What gaps have you identified in their strategy? Are they missing triggered emails or underutilizing A/B testing?
Threats: Some competitors may have significantly higher frequency or more aggressive discounting, which could be pulling attention away from your emails.
Note: MailCharts only monitors a pre-selected roster of companies. If your competitor is not already being tracked, you are out of options. The platform focuses heavily on ecommerce and retail businesses.
SendView
SendView is a custom competitor email tracking solution for any industry. While a MailCharts user accesses an existing database, SendView is designed to let you track the exact companies you want in the exact way you want.
After timing analysis, SendView lets you answer questions about competitors including how long their subject lines are, what the most common words are, whether they use dark mode code, Gmail Annotations, and which ESP they use.
Panoramata
Panoramata automatically monitors your competitors' entire digital marketing strategy, including email, ads, landing pages, SMS, flows, and website changes, all from a single dashboard. It provides access to up to three years of competitor marketing data to analyze past trends, spot patterns, and refine strategy based on proven tactics.
Owletter
Owletter automatically captures all emails sent from a website to their mailing list, takes a screenshot, stores it, and analyzes it, alerting you about emails that match your criteria, so you never lose another email and can learn about your competitors' email behavior.
Step 5: Check Social Media for Email Content Clues
Many brands repurpose their email content on social media. Follow your key competitors on Facebook, X (formerly Twitter), Instagram, and LinkedIn. You can often see parts of their email campaigns without being a subscriber.
Brands often share a link to view the email in a browser or post screenshots of their newsletters. This practice extends the reach of their content marketing and provides another avenue for you to monitor competitor activities. It also reveals how their email marketing integrates with their larger social media strategy.
Set up alerts or use social listening tools to monitor mentions of your competitors online. Customers often discuss emails they receive, especially if the content or offer is noteworthy, providing an unfiltered view of how their campaigns are perceived by their target audience.
Step 6: Turn Insights into Action
Data collected through competitor email analysis is only useful if it informs real changes to your strategy.
Start by organizing your findings into a centralized system. A simple spreadsheet, Notion board, or Airtable document can work well. Document each competitor, along with key observations about their email campaigns including subject lines, visual elements, tone, CTAs, and offers.
Apply a SWOT lens to your findings:
Strengths: What are your competitors doing well? Are they using visually compelling designs, persuasive CTAs, or highly engaging subject lines?
Weaknesses: Where do their emails fall short? Are the designs cluttered or do their emails lack personalization?
Opportunities: What gaps have you identified in their strategy? Are they missing triggered emails or underutilizing A/B testing?
Threats: Some competitors may have significantly higher frequency or more aggressive discounting, which could be pulling attention away from your emails.
Once you have a picture of what your competitors do well and where they fall short, use what you learn to improve your own segmentation, personalization, and campaign structure. Our guide on Email List Segmentation Strategies That Boost ROI by 760% is a strong next step for turning competitive intelligence into list strategy improvements.
The digital marketing landscape evolves rapidly, making it crucial to regularly update your competitor analysis. Set a schedule for periodic reviews to ensure your strategy remains informed by the latest trends and tactics.
Frequently Asked Questions
Is it legal to monitor a competitor's email marketing?
Yes. You can legally monitor competitors' email marketing data using available tools and methods. Subscribing to a public email list with a dedicated address is entirely above board. You are simply receiving communications that any member of the public could access. The ethical line is clear: observe and learn, do not steal copy or deceive.
Can I see my competitor's email open rates?
You will not have access to your competitors' internal analytics, but you can infer the success of certain strategies by observing engagement indicators such as social media shares or mentions, and the frequency and consistency of their email campaigns. Tools like Owletter can also help you identify timing and frequency patterns that suggest what is working.
How many competitors should I track?
You do not need to analyze every single competitor. Focus on the most relevant and influential ones in your market. A good rule of thumb is to select 3 to 5 competitors for your analysis.
How often should I run a competitor email analysis?
Ideally, you should do an analysis like this at least once a year, as both subscriber behavior and email marketing trends may change. For fast-moving industries or during peak promotional periods (holidays, product launches), a quarterly review gives you a more current picture.
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Once you have a picture of what your competitors do well and where they fall short, use what you learn to improve your own segmentation, personalization, and campaign structure. Our guide on Email List Segmentation Strategies That Boost ROI by 760% is a strong next step for turning competitive intelligence into list strategy improvements.
The digital marketing landscape evolves rapidly, making it crucial to regularly update your competitor analysis. Set a schedule for periodic reviews to ensure your strategy remains informed by the latest trends and tactics.
Frequently Asked Questions
Is it legal to monitor a competitor's email marketing?
Yes. You can legally monitor competitors' email marketing data using available tools and methods. Subscribing to a public email list with a dedicated address is entirely above board. You are simply receiving communications that any member of the public could access. The ethical line is clear: observe and learn, do not steal copy or deceive.
Can I see my competitor's email open rates?
You will not have access to your competitors' internal analytics, but you can infer the success of certain strategies by observing engagement indicators such as social media shares or mentions, and the frequency and consistency of their email campaigns. Tools like Owletter can also help you identify timing and frequency patterns that suggest what is working.
How many competitors should I track?
You do not need to analyze every single competitor. Focus on the most relevant and influential ones in your market. A good rule of thumb is to select 3 to 5 competitors for your analysis.
How often should I run a competitor email analysis?
Ideally, you should do an analysis like this at least once a year, as both subscriber behavior and email marketing trends may change. For fast-moving industries or during peak promotional periods (holidays, product launches), a quarterly review gives you a more current picture.
