Email Best Practices

Email Deliverability is an incredibly complex problem but the impact is simple -- your users and candidates need to receive your messages to keep your hiring goals on track! Below we've outlined some frequent pitfalls and possible solutions to help ensure your messages have the best shot of reaching their intended recipients.


1. Check your email verification

Messages sent through Greenhouse may seem like they are coming from your normal email address, but they are actually sent on behalf of one of our third-party mail servers. When you first sign up for Greenhouse, the From: field will list your email address, but the Sender: field -- where the email is actually coming from -- will list the mail server instead. Since spammer have been known to use a similar method to imitate legitimate email addresses, sometimes mail providers will start to mark these messages as spam or block them altogether.

Luckily, you can verify your domain to let mail providers know that your company has given us permission to send on your behalf, which should drastically improve your overall deliverability rate. Nearly 100% of companies without verified domains will report issues with missing messages at some point, so we'd suggest working with your IT team to get things verified sooner rather than later.

2. Check your spammyness score

Certain sites allow you to send a test email to check the overall health of your domain to see whether past behavior has negatively impacted your deliverability. If you're concerned about things going to spam, try a site like this!

3. Create a new email domain for recruiting

If outgoing emails to candidates are getting caught by spam filters due to the overall health of your company's domain, consider asking your IT team to create a separate email domain for users on the recruiting team (ie. or After the new domain is created, please contact or your account manager to ensure that the new email domain gets verified and is added to your Greenhouse account! 

4. Whitelist our mail providers' IPs to help internal deliverability

If your users aren't receiving automated emails, @mentions, or other messages sent through Greenhouse, consider asking your IT team to whitelist our mail providers' IP addresses. Here are the IP addresses that Greenhouse uses to send email through our email provider, Mailgun:

5. Add an email signature

Did you know you can add an email signature to your Greenhouse profile, then include it in your email templates so it's always readily available? Not only does it help give context to your role in the company and jazz up your templates, but emails with professional signatures are less likely to be flagged as spam!

6. Create longer templates

Short emails, especially ones that include links, are more likely to be flagged as spam. If you're sending out the same types of messages over and over (like the Candidate Availability Request Message), consider adding a little more content to that template to hopefully avoid getting flagged.

7. Add specific content in the body and subject

Sending many identical messages all at once could increase your chance of being flagged as spam, so using the tokens for candidate name and other specific information might help improve deliverability over time.

8. Avoid Spam words

Some words are spammier than others, so make sure the verbiage you're including in your emails doesn't contain too many of these types of words

Have more questions? Submit a request


  • Avatar
    Genevieve Crawford

    i want to know how to load email history into Greenhouse

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    Mary Kathleen Morelli

    Hello Genevieve,

    Thank you for reaching out about this! While it's not possible to view a history of emails that you've sent via Greenhouse within the application, you can utilize the Maildrop function to easily log candidate email conversations to Greenhouse. I've attached the Maildrop FAQ here:

    All the best,

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    Jidapha Yiamsawas

    Hi there,
    Just wanted to ask where I can set up an automated email upon receiving a candidate’s application/resume on Greenhouse?

  • Avatar
    Jidapha Yiamsawas
  • Avatar
    Michelle Mesch

    Hi Jidapha!

    Thanks for reaching out!

    So glad you were able to find the answer! That is exactly it, just set your Notifications to email you when a new Candidate Application is sent in for any Job.

    If you have any further questions please feel free to reach out again at any time. We'll be happy to assist. Take care and have a great day!


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    Elyssa Feliciano


    Is there a way to send a bulk custom availability request email? When I select bulk action email, it doesn't give me the option to select an email, it only provides a link to create a template.

    Thank you,

  • Avatar
    Jessie Yang

    Hi Elyssa,

    Thanks for reaching out!

    When performing a bulk candidate e-mail, you cannot use templates featuring application-specific tokens including {{JOB_NAME}}. Because of that, you could create a custom e-mail template that does not contain any application-specific tokens to bulk request availability, and the template created will then be an option to select when performing a bulk candidate e-mail.

    If you have any additional questions or would like any assistance with this, please let us know!