Let’s connect

Email Marketing

While social media reach depends on algorithms, your email list belongs to you. We turn it into a tool that builds customer loyalty and drives revenue.

Abstrakter Farbverlauf in Grün und Blau
Bestellbestätigung mit Lieferdatum und Produktempfehlungen
Kollegen von seitenweise arbeiten gemeinsam im Büro

Email Marketing Agency

Email marketing combines reach with relevance. When you send the right message to the right person at the right time, you build relationships that go beyond individual campaigns.

Campaigns that are opened
and clicked on

Automation that runs in the
background

Measurable Results
Instead of Gut Feelings

Mitarbeiter von seitenweise in der Pause im Loungebereich

Content That Gets Read

An email is judged in a matter of seconds: subject line, first sentence, visual impression. We design emails with a clear structure: from the opening to the benefits to the call to action. The copy is concise, and the design is responsive and consistent with your brand. We work closely with your content team to ensure that the tone and message align with your overall communication strategy. The result is emails that aren’t just opened—they’re read and clicked on.

Why Email Marketing Still Works

Social media reaches only a fraction of your followers. Search engines display your site when someone actively searches for it. Email reaches people directly and proactively in their inboxes. Open rates in the B2B sector average over 20 percent. No other digital channel offers this combination of reach and control. Your mailing list belongs to you, not to an algorithm. When combined with SEO and content marketing, email becomes the most powerful channel for customer retention and repeat purchases.

Mitarbeiter von seitenweise arbeitet am Laptop an einem Kundenprojekt

Email marketing is more than just one newsletter a month. Depending on your goals and target audience, there are various formats and occasions. From automated welcome emails to targeted reactivation campaigns: each type of email serves a specific purpose.

Newsletter mit Illustration in der Vorschau

Newsletter

Regular newsletters keep your target audience up to date on new content, product updates, and industry news. We develop formats that readers look forward to and enjoy opening. We tailor the content, frequency, and design to your brand and your audience.

E-Mail Marketing: automatisierte Strecke von der Anmeldung bis zur Willkommensmail

Marketing Automation

Automated email flows run in the background and reach recipients exactly when it matters most. Whether it’s welcome sequences, abandoned cart emails, or follow-ups after a download, we set up workflows that automatically nurture your customer relationships.

Raster aus Onboarding-Inhalten für neue Abonnenten

Onboarding Series

The first emails sent after sign-up determine whether a contact will become an active user. We design onboarding sequences that introduce your offering in several steps, build trust, and lead to the first action.

Reaktivierungsmail mit der Ansprache We miss you

Reactivation

Inactive contacts aren't lost contacts. With targeted reactivation campaigns, we bring back recipients who haven't opened or clicked on anything in a long time. Discount offers, new content, or a simple question can make all the difference.

Transaktionsmail mit Bestelldetails und Empfehlungen

Transactional Emails

Order confirmations, shipping notifications, and password resets are a must. But they’re also an opportunity. We design transactional emails that look professional, convey your brand, and take advantage of cross-selling opportunities.

These companies know how we work

Relevance determines whether an email gets opened or ends up in the trash. We segment your mailing list based on behavior, interests, purchase history, and demographic characteristics. This creates target groups that receive tailored content instead of mass emails. Personalization goes beyond just including the recipient’s first name in the subject line. Dynamic content automatically adapts to the recipient’s profile: different products, different text, different CTAs. The more relevant the email, the higher the open and click-through rates. Segmentation also improves conversion optimization because recipients only see offers that match their current needs. A well-segmented mailing list is the foundation for higher engagement rates. We set up the segments, continuously update them based on new data, and adapt the criteria to your business development. An email marketing agency earns its money through this segmentation.

What Our Customers Say

„seitenweise is one of the few agencies that has managed to completely exceed our expectations. Performance, quality, reliability, timing—everything is top-notch! Highly recommended.“

Logo von myflexbox

Florian Nack

myflexbox

„What particularly impresses us about Seitenweise is not only its technical expertise, but also its proactive approach.“

Logo von DFT

Dirk Bockelmann

DFT

„Working with an agency requires good ideas, cutting-edge technology, and clear budgets with no surprises. But the personal chemistry has to be right, too. With seitenweise, everything was just right. It was really fun.“

Logo von Intervideo

Mathias Schwaben

Intervideo

„To me, having a strong partner is important. Someone who is “passionate” about their work, who offers well-reasoned professional objections but also accepts and continues to fully support my decisions as a client when I choose a different path. I’ve been working very successfully with seitenweise in this way for many years—both in day-to-day operations and on many large-scale projects.“

Logo von Liebich & Partner

Veal from Martina

Liebich & Partner

Projects

Frequently
Asked
Questions

send

have an effect

Kollege stellt dem Team ein Projekt im Besprechungsraum vor

Email Marketing from Bielefeld

seitenweise is a digital agency based in Bielefeld, founded in 1999. Our experience is shaped by over 100 clients and more than 500 projects, including numerous email marketing campaigns involving newsletter development, automation, and template design. We combine strategic thinking with technical implementation: from subscriber segmentation to templates to reporting. The result is emails that people actually read and click on. In addition to email marketing, we offer web design, web development, SEO, content creation, and video—all from a single source. This ensures your campaigns run consistently and in sync across multiple channels.

Portrait von André Schwarzer vor einer Holzlamellenwand

Marcel and André are your points of contact at seitenweise. They'll be happy to answer any questions you have about email marketing.

Portrait von Marcel Pietsch vor einer Holzlamellenwand

Your email list is your most valuable marketing channel. We'll help you use it effectively with campaigns that resonate and make an impact.

Let's go!