Czech corporate mailbox EmailProfi.cz unlimited domain name free registration

In today's digital age, corporate email has become an indispensable tool for business communications. As a professional corporate email service under Seznam, the largest portal in the Czech Republic, EmailProfi.cz is becoming an ideal choice for small and medium-sized business owners around the world with its powerful functions and completely free business model. This article will deeply analyze the various features, technical advantages and detailed configuration guides of EmailProfi.cz to help you fully understand and make full use of this high-quality service.

1. Analysis of the core advantages of EmailProfi.cz

The most striking feature of EmailProfi.cz is its completely unlimited resource allocation:

• Unlimited number of domain names : A single account can be bound to unlimited corporate domain names, especially suitable for companies with multiple brands or business lines
• Unlimited email accounts : You can freely create any number of employee email accounts according to the size of your company without worrying about additional costs
• Aliases are available in any number : Each mailbox supports creating unlimited aliases to meet flexible needs such as department mailboxes and project mailboxes
• Unlimited storage space : Completely solve the storage anxiety of traditional corporate mailboxes, and historical emails can be permanently saved

In terms of security authentication, EmailProfi.cz fully supports industry-standard DMARC, SPF and DKIM protocols. These technologies can effectively prevent phishing emails and domain name forgery, ensuring the delivery rate of corporate emails. According to third-party test data, a well-configured corporate mailbox can reduce the probability of emails entering the spam folder by more than 92%.

2. Technical architecture and protocol support

EmailProfi.cz is based on the mature mail system architecture of Seznam.cz and uses distributed storage and load balancing technology to ensure high availability of services. Its technical features include:

• Multi-protocol support : fully compatible with IMAP (143/993), POP3 (110/995) and SMTP (25/465/587) protocols
• Global server nodes : Mail servers are located in major European data centers, with an average latency of less than 150ms
• TLS encrypted transmission : TLS 1.2/1.3 encryption is enabled by default for all connections, in compliance with GDPR data protection requirements
• Intelligent anti-spam system : Using machine learning algorithms, the spam blocking accuracy rate reaches 98.7%

3. Detailed Configuration Guide

1. Preliminary preparation

Before starting the configuration, make sure you have:

• A valid Email.cz personal email account (to serve as an administrative account)
• Domain name management authority (can modify DNS records)
• It is recommended to prepare two commonly used browsers (such as Chrome and Firefox) for comparison

2. Domain name binding process

Steps in detail:

1. After logging into your Email.cz account, visit https://emailprofi.seznam.cz/add-domain
2. Enter the full domain name in the domain name input box (such as yourcompany.com)
3. Check the boxes for "Agree to the Terms of Service" and "I already own this domain name"
4. Click on the orange "Pokračovat" button to enter the DNS settings

3. DNS record configuration

EmailProfi.cz requires the following key records to be configured:

Recommended actions:

• First delete the original MX record of the domain name
• Wait 5 minutes after adding the record and then test again
• Use dig or nslookup to verify that the record is effective.

4. Advanced function configuration

1. Catch-All Function

In the "Domény" section of the admin panel, you can enable the Catch-All feature:

1. Select the target domain
2. Click on the "Zachytávací schránka" option
3. Specify the destination mailbox to receive all emails with undefined addresses
4. Save the settings and they will take effect immediately

2. DKIM signature configuration

To improve email credibility, it is recommended to configure DKIM:

1. In the "Domény" section select "DKIM podpis"
2. The system will generate a 2048-bit RSA key pair
3. Copy the provided TXT record and add it to the domain DNS
4. Example record format:
   v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA...

5. Mobile terminal configuration guide

EmailProfi.cz is perfectly compatible with all types of mobile devices:

1. Android configuration

• Server: imap.seznam.cz
• Port: 993 (SSL)
• Username: Full email address
• Authentication method: normal password

2. iOS Configuration

• Incoming server: imap.seznam.cz
• Use SSL: Yes
• Authentication: Password
• SMTP server: smtp.seznam.cz

6. Solutions to common problems

Problem 1: MX record verification failed <br> Solution: Check if there are any redundant MX records remaining; TTL value is recommended to be set to 3600; Ensure that there is no CNAME record conflict

Problem 2: Email sending is rejected <br> Solution: Confirm that the SPF record contains "include:spf.seznam.cz"; Check if the IP is blacklisted; Test if port 587 is open

Problem 3: Mobile client connection problem <br> Solution: Turn off two-factor authentication test; try using an app-specific password; check if the device time is accurate

VII. Service Restrictions and Precautions

Although EmailProfi.cz offers nearly unlimited services, there are still some things to note:

• The maximum size of a single email is 50MB (including attachments)
• The sending limit is 500 emails per hour (to prevent abuse)
• Only supports European phone number verification
• The management interface does not support English yet (you can use the browser translation function)

With the detailed guidance in this article, you should be able to make full use of EmailProfi.cz, a powerful free corporate email service. It is recommended to check Seznam's official documentation regularly for the latest feature updates. For companies that need more advanced features, Seznam also offers a paid EmailProfi Business plan, which includes dedicated support and technical guarantee services.