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.
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
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.
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.
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.
„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.“
Florian Nack
myflexbox
„What particularly impresses us about Seitenweise is not only its technical expertise, but also its proactive approach.“
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.“
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.“
Veal from Martina
Liebich & Partner
Projects
Frequently
Asked
Questions
send
have an effect
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.
Marcel and André are your points of contact at seitenweise. They'll be happy to answer any questions you have about email marketing.
Your email list is your most valuable marketing channel. We'll help you use it effectively with campaigns that resonate and make an impact.