Email Marketing Agency

Boost your sales with email marketing campaigns that work

We are your email marketing agency. We design campaigns that increase your sales and build customer loyalty without relying on ads.

Profitable email marketing without complications. Strategy, automations, and messages your customers actually read.

An email marketing strategy designed for your business, your data, and your goals. No templates. No improvisation. No random sends. At Sinfonía Digital, your email marketing agency, we create campaigns based on real analysis, content that converts, and automations that work for you every day.

What do we do?

Services as an email marketing agency

Deliverability improvement
Deliverability improvement

• We analyze your domain, reputation, DNS, and the real status of your deliverability.

• We implement SPF, DKIM, DMARC, warm-up, and best practices so your emails do not end up in spam.

• We optimize your key metrics: open rate, clicks, and inbox placement.

From 220 €
Campaign design and creation
Campaign design and creation

• We create email marketing campaigns with a conversion-focused design.

• We write the content with persuasive copy focused on opens and clicks.

• We configure segmentation, A/B tests, and send the optimized campaign in your email tool.

From 290 €
Automations and sales flows
Automations and sales flows

• We design automated funnels to capture, nurture, and convert more customers on autopilot.

• We configure sequences like welcome, post-purchase, abandoned carts, and loyalty.

• We measure performance and adjust each automation to maximize recurring revenue.

From 180 € / month
* VAT not included

Methodology for your email marketing to work

1
Initial diagnosis

We analyze your business to identify real opportunities and define a strategic plan focused on conversions.

2
Complete audit

We review your entire email marketing system: technical configuration, segmentation, funnels, content, deliverability, and user experience.

3
Customized strategy

We design a tailor-made strategy for your business model and your goals. More sales, more recurrence, and real loyalty based on data.

4
Implementation and execution

We configure your domain and your provider to maximize deliverability and avoid spam. We implement the technical part, create automations, design the emails, and manage campaign sending.

5
Measurement and continuous optimization

We monitor your key metrics to improve every flow, every campaign, and every decision. We constantly optimize to increase ROI month by month.

6
Constant support

You are not alone: we guide you every step of the way, answer questions, propose improvements, and adjust the strategy as your business evolves. We offer comprehensive solutions.

Do you want to know more?

Frequently Asked Questions

Most projects begin to notice improvements within the first 4 weeks. The most solid results come when automatic flows are active and optimized: welcome, abandoned carts, post-purchase, winback...

At that point, your system begins to generate recurring sales predictably, without the need to increase advertising spending.

As a mass email marketing agency, we ensure your campaign has a rapid impact, constant growth, and becomes an increasingly profitable channel.

You have complete freedom. As a strategic email marketing agency, we work with the main platforms on the market: Mailchimp, Mailjet, Mautic, Listmonk, Amazon SES, among others. Together, we choose the one that best suits your needs, budget, and type of business.

If you already use a tool, there is no need to change: we optimize it and get the most out of it.

Technology is important, but strategy and execution are what truly make the difference.

Yes. Email deliverability is one of the pillars of any mass mailing strategy, and if it fails, it affects all your metrics: opens, clicks, and sales.

We review your technical configuration (DKIM, SPF, DMARC, warming, domain reputation), analyze your lists, your sending history, and your current segments to identify the factors affecting your inboxing.

From there, we optimize sending, clean the database, and apply best practices to recover and improve your delivery rate.

The goal: for your emails to arrive where they should, meaning the inbox, not the spam.

Of course. As an automation email marketing agency, we analyze your current database, segment it correctly, and optimize it to improve campaign results. We also review contact quality, remove inactive records, identify opportunities for advanced segmentation, and prepare the database so you get greater performance from the very first send.

I want to know more!

About me

Sinfonía Digital

• Hello! I am Miguel Martínez, email marketing consultant, and I help SMEs and freelancers transform their customer database into a profitable and predictable sales channel. My job is to design strategies, automations, and content that connect with your customers and generate real results.

• Your campaigns should be an engine for revenue, not a simple mass mailing. That's why I focus on designing smart flows, effective segmentation, and campaigns your audience wants to open. A strategy without analysis or deliverability is like sending emails to an empty mailbox: it doesn't matter how pretty they are if they don't arrive or convert. My goal is for your subscribers to read you, trust you, and buy again.

• As an independent consultant, I can offer competitive prices because I do not operate with the structure or costs of a traditional agency. This allows me to dedicate more time to your project, more flexibility, and offer a personalized service, direct and without intermediaries.

Can I see some examples?

Our projects

Web design for family counseling
Web design and app for movie and series finder
Web design for personalized gifts online store
Web design for psychotherapists
Web development in Laravel
Web design for financial product comparison sites
Web design for interactive quizzes and admin panels
Web design for psychologists in Barcelona
Web design for psychologists
Web design for psychological center
And what do the customers think?
Reviews
Judith Martin
13:26 10 Nov 25
I couldn't be happier with the website Miguel created for me. His service was incredibly fast, and the instructions on how to use the site were super clear! He's always available to answer any questions. I'm so glad I worked with him.
Esteban Quintana
09:08 09 Aug 25
I've been working with Miguel for over a year, and his performance has always been 100%. He's proactive, empathetic, and presents clear and effective solutions to any questions I've had.
The best web design in Terrassa you can find. Serious, professional, and with results that really work. I'll be back!
Julia Asenjo
13:54 07 Jun 25
I'm very happy with the website Miguel designed for me. He was able to adapt to my needs and create a simple, beautiful website that conveys what I wanted. He was very patient with the changes. The result is fantastic. I recommend it. Thank you very much, Miguel.
I'm delighted with the website Miguel created for me. He's a great person and a great professional. I recommend him wholeheartedly.
Cristina Mayordomo
11:05 21 Feb 24
Miguel gave my website a facelift, and since then I've gotten many more visitors and clients. He's attentive, professional, and very serious! Thank you so much, I'm very happy!
Carolina Sagués
15:16 11 Feb 24
Very attentive and competent. You captured what I wanted to convey on my website. Thank you Miguel for making it possible. Needless to say, I recommend you 100% :)
Elena Caballero
12:04 05 Feb 24
Very professional and approachable at the same time. I'm very grateful for your knowledge and advice, Miguel. Since you updated my website, my work as a psychologist has increased exponentially. Thank you again, Miguel!
Aida Albiar
18:20 29 Jan 24
I 100% recommend Sinfonía Digital. Excellent value for money. Miguel is very responsible and intelligent in his work.
Aneryn
11:47 23 Jan 24
Thank you for your service! You have given us all the facilities. We have managed to occupy the first page of Google results for our niche, which was our main objective, so we are very happy :)
You've convinced me!

Let's talk =)

Have we sparked your curiosity?

Whether it's to place an order, learn more about our work process, or simply get more information about what we do, feel free to get in touch with us.

You can use the form or contact us directly by phone, WhatsApp, or email.

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