The participant experience at an event often begins with the invitation. The event invitation is the first impression, and a personalised approach is just as important as a simple and straightforward registration process. In this blog post, we’ve put together a range of best practices for event invitations that will help you reach out to your potential participants in a compelling way and win them over for your event.

Anna brings over 6 years of experience in digital event management, including 2 years as Marketing Manager at START Global for the START Summit, and is an expert in product development and customer success at Oniva. She holds a Master's degree in Business Innovation from HSG.
A well-crafted event invitation sets the tone for the entire attendee experience and directly influences registration rates. Best practices include clearly defining the target audience, personalising communication, choosing the right send time, and making registration as simple as possible. Follow-up reminders, a clear call to action, and mobile-optimised design are also key factors in maximising event sign-ups.
Use the following points to get an overview of the success factors before sending out your event invitation. With the dispatch of your invitation, the excitement and anticipation begin for your attendees. Take enough time to plan this first, crucial step in event communication carefully.
Start by considering who your target audience actually is and who should be invited. Also, find out which channels are best suited to reach your audience.
Ensure that the event invitation includes all key details, such as the date, time, location, and purpose of the event. Present the most important information clearly and highlight it visually.
Use an attractive design to capture the attention of your target audience. Make sure that both your invitation and your event website are consistent with your corporate branding.
Address recipients by name to create a more personal connection. A personalised invitation increases both the perceived value of the invitation and the appreciation shown to your target audience.
Use the invitation to spark anticipation and curiosity about the event. Highlight the event’s key features, and leave some programme details open to build suspense.
Ensure that participants can confirm their attendance directly via an integrated registration option. For higher registration rates, make the process as simple as possible – for example, with a pre-filled registration form.
Send your invitations early enough so that guests have sufficient time to plan their attendance. The ideal lead time depends on factors such as the event format, duration, date, location, and audience. As a general guideline:
Ideally, use an event tool like Oniva, which allows you to schedule email campaigns automatically.
Make sure both the invitation and the registration form are easy to read and complete on mobile devices, since many people open emails on their smartphones. A simple, mobile-optimised registration process is key to higher registration rates.
For public events, take advantage of social media to generate additional attention. Ensure that the link to your event website contains the correct meta tags so that key information is displayed attractively on social platforms.
A “last call” reminder shortly before the event can often convince undecided guests to register. It’s also worth sending reminders to already registered participants – to reduce no-shows and share any final important details.
To make your event a success, you need a well-planned and professionally designed invitation. But how do you ensure your message actually reaches your audience? And how can you prevent your invitation from ending up in spam or being ignored?
Here are eight proven strategies to improve the delivery and open rates of your event invitations – based on best practices from our experience in event and email communication.
A successful campaign starts with a well-maintained email list. Only use active and valid contacts, ideally with prior opt-in. Avoid purchasing email lists – they’re often outdated or low-quality, increasing bounce rates and harming your sender reputation.
➡️ Tip with Oniva: Oniva enables GDPR-compliant guest management with integrated opt-in forms, helping you build a high-quality contact base from the start.
Your sender reputation determines whether your email lands in the inbox or the spam folder. Providers evaluate bounce rates, spam complaints, and engagement metrics.
Use certified, stable servers – ideally through a dedicated or trusted email provider.
➡️ Tip with Oniva: Oniva sends your event communication via high-performance, professionally configured servers with SPF/DKIM authentication for optimal delivery.
Authentication protocols like SPF (Sender Policy Framework), DKIM (Domain Keys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting & Conformance) are essential today. They protect your domain from spoofing and confirm to receiving servers that you’re a legitimate sender.
➡️ Work with your IT team or hosting provider to set these up correctly.
Use consistent sender addresses under your company domain, such as events@yourcompany.com. Avoid no-reply addresses or free email domains such as @gmail.com or @hotmail.com. These appear unprofessional and reduce the trust of potential participants.
➡️ A personal, recognisable sender address significantly increases the likelihood of your email being opened.
Spam filters are sensitive to sensational terms such as “Free”, “Secure now”, or “For a limited time only”, as well as excessive punctuation like !!! or %?!. Subject lines written entirely in capital letters also often appear spammy.
➡️ Stay factual and relevant – focus on the specific value your event provides.
The subject line is your door-opener – it determines whether your email is clicked or ignored. Keep it short, clear, and intriguing. Good subject lines typically include:
Example: “Your personal invitation to the FutureTech Conference”
➡️Tip with Oniva: You can easily customise and test subject lines and sender details for each event campaign.
Personalised content achieves significantly higher open and click rates. Address your recipients by name, refer to previous interactions, or highlight specific interests. This makes your event invitation more relevant and prevents it from appearing as a mass email.
➡️ Tip with Oniva: With Oniva, you can automate personalised event communication – even for large recipient lists.
Email attachments are often flagged by spam filters and may be blocked in corporate networks. They also make mobile use more difficult.
Instead, include content directly in the email or link to landing pages – for example, the event website, programme, or registration page.
➡️ Tip with Oniva: With Oniva, you can create a dedicated landing page for each event and include a personal event link directly in the invitation.
The primary goal of an event invitation is always to encourage registration. Therefore, include a clearly visible call-to-action button in the invitation, such as “Register now” or “Go to registration”.
➡️ Tip with Oniva: With Oniva, you can freely define each call-to-action and translate it seamlessly for different languages.
Use preview and test functions to check how your invitation appears across different email clients (e.g. Outlook, Gmail, Apple Mail). Ensure all links, formatting, and mobile layouts work correctly.
➡️ Tools like Mail-Tester can also help you analyse technical quality and spam classification before sending.
Many event organisers ask themselves before an event whether invitations should be sent in physical or digital form. Both formats have their advantages and disadvantages – and a combination of the two can also make sense.
A physical event invitation is a printed card or letter sent in paper form to invite people to a specific event. Physical invitations are often used for occasions such as company anniversaries, product launches, or other exclusive customer and marketing events.
Despite these disadvantages, a physical event invitation can still be the right choice – particularly when the invitation itself is part of the overall event concept.
A digital event invitation is an invitation to an event that is created and sent electronically, rather than in printed form. This type of invitation is often distributed via email, messaging services, or social media.
The advantages of digital event invitations clearly outweigh the disadvantages. This is especially true because event communication does not end with the initial invitation. If additional communications such as reminder emails or the distribution of final event information are planned, the digital route is more cost-effective, flexible, and faster.
Eine interessante Möglichkeit ist die Kombination einer physischen Event-Einladung mit einer digitalen Event-Anmeldung. In diesem Fall wird die physische Event-Einladung mit einem QR-Code zur Event-One effective approach is to combine a physical event invitation with a digital registration option. In this case, the physical invitation includes a QR code linking to the event registration page. This allows participants to register directly via their smartphones, while organisers receive real-time feedback. An enhancement of this approach is the integration of a unique QR code for each guest, creating a personalised registration experience.
In this blog post, we have compiled various templates for event invitations, suitable for internal events, conferences, training sessions, product launches, or company anniversaries.
Final event details are important pieces of information that event managers send to participants shortly before the event. They are often referred to as a “reminder email,” as they serve both as a reminder and a summary of key information.
After weeks or months since registration, follow-up communication is essential. Final event details serve to remind participants of the upcoming event, inform them of any changes, and ensure that all guests are well prepared and informed.
The ideal timing for sending final event details depends on several factors, including the type of event and the audience. Typically, these details should be sent 2–3 days before the event to account for any last-minute changes.
Digital channels such as email, SMS, or social media are best suited for last-minute communication. The channel chosen should ideally match the one used for the original invitation to ensure reliable delivery. Using multiple channels can help increase reach.
An email with final event details should be clear and concise. The specific content will vary depending on the event, but it can include:
Highlight the most important information to ensure participants notice it.
Pre-event communication can also help reduce no-shows, thereby improving event marketing outcomes. Additional tips on reducing no-shows can be found in our blog post on reducing the no-show rate.
Your event invitation often determines whether someone will attend your event or not. It is the first point of contact and should be clear, personal, and easy to understand. Define your target audience, provide the key information at a glance, ensure an appealing design, and make registration straightforward. Plan your sending schedule carefully and use reminders to minimise cancellations or no-shows.
Digital invitations have the edge: they are more cost-effective, flexible, environmentally friendly, and can be seamlessly integrated into the registration process with personalised links or QR codes. Physical invitations, however, can be impactful when you want to emphasise exclusivity, tactile appeal, or memorability. Often, the most effective approach is a combination of both formats.
Using professional event tools like Oniva ensures that your invitations are delivered reliably, look professional, and that the registration process works smoothly. This increases the likelihood that your target audience not only opens and reads the invitation but also registers, helping to make your event a success with a large number of attendees.
A successful event invitation is clear, relevant and visually appealing. Key factors include precisely targeting the audience, presenting all key event information at a glance, and ensuring a cohesive design that aligns with the corporate branding. Furthermore, the invitation should spark interest and highlight the benefits of attending.
Personalised invitations significantly increase attention and the likelihood of registration. Addressing recipients directly by name and including individually relevant content creates a stronger connection with the target audience, which improves open and conversion rates.
The best time depends on the type of event, but there is a clear structure to follow: a save-the-date should ideally be sent out 4–5 months before the event, the official invitation around 2–3 months beforehand, and reminder emails 1–2 weeks before the event. This gives attendees plenty of time to plan.
Discover the possibilities of Oniva’s digital event invitations for your events.

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