Email delivery problems (undelivered emails or spam)

By default, ATS Recruitis allows you to send emails through Recruitis (from its address), but on behalf of your company. However, if the candidate or the administrator of his/her email server has set stricter security rules , the email may not be delivered or fall into spam.


To improve deliverability, you can adjust the settings for sending emails in the "Settings" section of the "Email Communications" menu. There, you can choose from different types of email sending and easily ensure that your emails arrive where they are supposed to.

Here is a summary of the shipping options:

  • Sending emails via Recruitis
    • Recruitis sends emails with your domain, but through the Recruitis ATS mailserver.
  • Sending emails via Recruitis with your own domain (SPF record required)
    • SPF and DKIM records give the ATS Recruitis mailserver permission to send emails from your domain.
  • Custom SMTP server for sending mail
    • Recruitis also allows you to send messages via your own email server and the emails come directly from your email.
email communication settings

Setting SPF and DKIM records

If you wish to send emails via Recruitis with your own domain and using SPF/DKIM records, you must provide the relevant information to your IT. Below you will find an image with information about the SPF and DKIM records that need to be added. Your IT will be able to add these records and then you will be able to send emails through Recruitis with your own domain without any issues with spam filters that might evaluate the default setup as "suspicious".


information on SPF and DKIM records

SPF - what it is and how it works

An SPF record is like a list of allowed people who can send emails from your name. If someone else who is not on the list tries to send an email from your name, the recipient's email server will check it and may reject the email because it is not certain that it is a real email from you. To clarify, here is a simple diagram that shows how SPF works:

how spf works

Frequently Asked Questions

How do I know if an email has left ATS Recruitis?

  • If the email is written in the "Action History" section of the candidate's tab, it means that the email was successfully sent to the candidate.
  • Furthermore, if it has been written to the communication history in the communication tab, you can be sure that it was OK (emails to be saved to the "Communication" tab are only written after they have been delivered back to the system email address in ATS Recruitis - but you can have this disabled in the company settings).

How is it possible that the candidate didn't receive the email when you say he left ATS Recruitis?

  • This situation can occur when an email has been sent from Recruitis but the candidate's email server has rejected the email (e.g. due to a wrong SPF and DKIM method set in your system or if the candidate has strong security measures, a full inbox, etc.)

What is good to know for setting up

If you are going to set up DNS and DKIM yourself or if your IT colleagues are not experienced enough, it is good to know the principles of setup, at least to this extent.

When adding DNS records to allow emails from Recruitis to be sent through your domain, you may be required to specify fixed "source" and "target" fields. Let's demonstrate this with a specific example record:


In this particular DNS entry:

  • "source" represented by the string ""
  • "target" represented by the string "".

Specifically, it is a CNAME record that sets the alias "" to "". This means that when someone looks up the record for "", the DNS server redirects the query to "" and returns the answer for that record.

Overall, a DNS record consists of several parts separated by periods. The first part of the entry identifies the specific domain (""), the second part specifies the record type (CNAME), the third part ("recruitis._domainkey") identifies the name of the alias, and the last part ("") identifies the value to which the alias is rewritten.

💡 It is essential to have the correct SPF and/or DKIM records set up for email delivery if you use this delivery method. If the email is not delivered and comes back to you as undeliverable, you must check the SPF and/or DKIM record in your system.

Attached below is a sample of an undeliverable email that may be the result of a bad SPF and/or DKIM setting:

sample returned email
ATS Recruitis features Bulk tagging LinkedIn plugin Linking new responses from StartupJobs Integration with Integration with CzechCrunch Jobs Custom answer forms Talent database Facebook as a publishing channel Filtering in the overview of positions according to filter items Competency model Distribution of positions in the Recruitis system Creation of a new position Agency portal as a publication channel Google Chrome Plug-in Category of tags Reasons for rejection of candidates Measuring candidate satisfaction Record of communication with the candidate Interview planning Working with the hiring managers Questions for the interview Setting up and monitoring feedback Filtering the candidates in the database by source Hot candidates The gender variable in e-mail templates Online interviews directly from Recruitis Fast interview planning Introduction video with an overview of ATS Recruitis settings GDPR changes in the system Introductory video introducing ATS Recruitis Comparison of candidates Notification of all notes on your positions Variable stages of the recruitment process External sharing of the candidate cards Filling in the candidate's personal data directly from the CV New applicant notification even for manually entered ones Two-phase authentication Option to turn off adding a smart email to the copy of messages to candidates Automated candidate sharing and tagging Option to choose NPS sender The Google Chrome plugin now also loads candidates from StartupJobs Enforce response form language Notification of emails sent only to the system email Webhooks for the Nelisa portal End of support for Internet Explorer 11 Integration Impersonation Talent database and its possibilities Account line manager vs. account with limited rights Kanban Manage profile photos Processing the candidate list in the database (alternative to exporting candidate contacts) Copying and moving a candidate Principles of functioning of the candidate card Recruitment flow and connection with email templates Upload a response from a LinkedIn ad Clearing the image cache when sharing a position on LinkedIn Adjusted dialogs for copying and moving a candidate Scheduling a candidate interview right in your calendar Ad response source vs. candidate resource Candidate Service Prioritization (SLA) Management of communication regarding the rejection of applicants New GDPR filters in the database Reports and statistics GDPR consents Recovering a deleted user account Referral User management Multi-brand in email communication with candidates Filters in position lists NPS metric Applicant import history Practical example: candidate deletion vs. removing the answer Foreign advertisements Offers to candidates (offer management) Attachments of the applicant Confidential job position Place of work Preferred location Webhooks for system events Renaming the candidate Tagging notes Option to cancel sending NPS Expedited position publication Application for opening a position ("requests") SMTP settings for sending emails Elimination of the applicant Who has access to the candidate card Automatic response Classified ads and ad templates Sending SMS from ATS Recruitis Recruitis Option to omit a candidate from the invitation saved in your calendar Bulk actions To cancel a delayed email send Position sharing opportunities through ATS Recruitis' internal career site Connection with the fajn-brigá portal Withdrawal of consent to the processing of personal data A reminder to take action with the candidate Send emails from Recruitis using your Outlook365 account The function to remove candidates from a position directly in the talent database

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