Once you have a list of contacts and your email accounts properly configured, the next step is to create your cold email campaign.

In this guide, you'll learn how to properly configure a campaign inside Mailerfind to maximize replies, avoid common mistakes, and maintain strong email deliverability.

Before You Start

Many users believe that cold emailing simply consists of writing an email and clicking "Send."

The reality is that an effective campaign depends on several factors:

• Choosing the right audience.
• Writing a relevant message.
• Personalizing the content.
• Using a healthy sending infrastructure.
• Properly configuring sending schedules and volumes.

For this reason, before launching any campaign, it is worth spending a few minutes reviewing each of these elements.

Step 1: Define Who You Are Going to Contact

Before writing a single word, you must clearly understand who will receive your email.

Ask yourself:

• Who is my ideal customer?
• What problem do they have?
• What solution can I offer?
• Why should they reply to me?

The more specific your audience is, the better your results will be.

For example:

• Marketing agencies.
• Dental clinics.
• Ecommerce stores.
• Coaches and consultants.
• SaaS companies.

Trying to sell the same thing to everyone usually results in campaigns with very low response rates.

Step 2: Create an Engaging Subject Line

The subject line is the first thing your recipient will see.

Its purpose is not to sell.

Its purpose is to get the recipient to open the email.

Best Practices

• Keep it short.
• Use natural language.
• Spark curiosity.
• Avoid sounding like advertising.

Examples

• An idea for your company
• Quick question
• A question about your business
• I found you on Instagram

What to Avoid

• EXCESSIVE CAPITAL LETTERS
• Too many emojis
• Exaggerated promises
• Obviously promotional messages

Step 3: Write the Email Content

The body of the email should be brief and easy to read.

Most people spend only a few seconds deciding whether to reply to or ignore an email.

Therefore, we recommend:

• Short sentences.
• Simple language.
• One objective per email.
• A clear call to action.

A good cold email usually focuses on:

1. Capturing attention.
2. Generating interest.
3. Encouraging a reply.

You can use our custom GPT specialized in cold email writing:

https://chatgpt.com/g/g-68de94a74d98819190439eb37e9b0935-cold-email-gpt

Step 4: Use Email AI to Generate or Improve Your Message

If you don't know where to start, you can use the AI assistant built into Mailerfind.

The tool can help you:

• Generate drafts from scratch.
• Get new ideas.
• Improve existing messages.
• Adapt the tone to your audience.

Remember that AI should serve as a starting point.

It is always recommended to review and personalize the final result before sending it.

Step 5: Personalize Your Email with Dynamic Variables

Personalization often significantly increases open and reply rates.

Mailerfind allows you to insert dynamic variables into your message.

For example:

• Recipient's name.
• Company name.
• Information available in your database.

A personalized greeting usually creates a much more natural experience than a generic email.

Example

Instead of:

Hello,

You can use:

Hello {{first_name}},

Mailerfind will automatically replace the variable with the corresponding value for each contact.

Step 6: Assign an Internal Campaign Name

Before continuing, assign a descriptive name to your campaign.

This name will only be visible to you and will help you better organize your projects.

Examples

• Facebook Ads Agencies May
• Spain Ecommerce Q2
• Barcelona Dental Clinics
• Startup Investors

Using clear names makes it easier to track results later.

Step 7: Select Your Recipients

Next, you'll need to choose which list or data source you want to use for the campaign.

Before proceeding, verify that:

• The contacts belong to the correct audience.
• The segmentation is appropriate.
• The list is up to date.

Good segmentation often has a greater impact than any copywriting optimization.

Step 8: Select Your Sending Accounts

Mailerfind allows you to use multiple email accounts within the same campaign.

This provides several advantages:

• Distribute sending volume.
• Reduce spam risks.
• Scale campaigns safely.
• Maintain a better reputation for your email accounts.

The platform will automatically distribute emails among the selected accounts.

Step 9: Configure Sending Volume

Each account has a recommended daily sending limit.

For example:

• 5 accounts sending 20 emails per day each.
• Approximate total capacity: 100 emails per day.

Avoid aggressively increasing volumes if the accounts are new or insufficiently warmed up.

Cold email scaling should always be done gradually.

Step 10: Configure Sending Schedules

The timing of your emails also affects results.

Before launching the campaign, review:

• Time zone.
• Sending days.
• Allowed sending hours.

As a general rule, it is recommended to send emails during business hours and avoid late-night periods.

Step 11: Send a Test Email

Before launching any campaign, send a test email to your own address.

Check that:

• The formatting displays correctly.
• There are no spelling mistakes.
• Variables work properly.
• Links are correct.
• The email is delivered successfully.

This step can prevent many mistakes before impacting hundreds or thousands of contacts.

Step 12: Launch Your Campaign

Once you have reviewed the entire configuration, you can start the campaign.

It is important to remember that emails are not sent all at once.

Mailerfind distributes emails progressively according to the sending volume and scheduling configuration you have established.

Monitor Your Results

After launching your campaign, regularly review its metrics.

Pay special attention to:

• Open rate.
• Reply rate.
• Bounce rate.
• Unsubscribes.

These metrics will help you identify opportunities for improvement and optimize future campaigns.

Final Recommendations

• Prioritize segmentation quality over volume.
• Keep emails short and direct.
• Use personalization whenever possible.
• Run tests before every launch.
• Gradually increase sending volume.
• Analyze results and continuously optimize.

Cold email is an iterative process. The campaigns that achieve the best results are usually those that are continuously reviewed and optimized based on the data collected.

Updated on: 03/06/2026