---
title: Blog | HubSpot Email Validation
description: HubSpot Email Validation | Explore tips on HubSpot Operations, CRM hygiene and especially HubSpot merging & deduplication
---

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##### Topic

# HubSpot Email Validation

![SPF, DKIM and DMARC in HubSpot: a setup checklist for marketing email](https://koalify.io/hs-fs/hubfs/SPF%2c%20DKIM%20and%20DMARC%20in%20HubSpot%20a%20setup%20checklist%20for%20marketing%20email.png?width=370&height=220&name=SPF%2c%20DKIM%20and%20DMARC%20in%20HubSpot%20a%20setup%20checklist%20for%20marketing%20email.png)

###### [SPF, DKIM and DMARC in HubSpot: a setup checklist for marketing email](https://koalify.io/blog/hubspot-spf-dkim-dmarc-setup)

By [Jonas](https://koalify.io/blog/author/jonas)  14 October, 2026

You inherited a HubSpot portal that's been sending marketing email for years. Nobody can tell you...

[Read More](https://koalify.io/blog/hubspot-spf-dkim-dmarc-setup)

![Why your HubSpot emails are going to spam (and how to fix it)](https://koalify.io/hs-fs/hubfs/Why%20your%20HubSpot%20emails%20are%20going%20to%20spam%20(and%20how%20to%20fix%20it).png?width=370&height=220&name=Why%20your%20HubSpot%20emails%20are%20going%20to%20spam%20(and%20how%20to%20fix%20it).png)

###### [Why your HubSpot emails are going to spam (and how to fix it)](https://koalify.io/blog/hubspot-emails-going-to-spam)

By [Jonas](https://koalify.io/blog/author/jonas)  12 October, 2026

Your open rate was 28% last month. This week's newsletter came in at 9%. HubSpot says 98%...

[Read More](https://koalify.io/blog/hubspot-emails-going-to-spam)

![How to unbounce a contact in HubSpot](https://koalify.io/hs-fs/hubfs/If%20the%20address%20was%20right%20unbounce%20it%20in%20HubSpot.png?width=370&height=220&name=If%20the%20address%20was%20right%20unbounce%20it%20in%20HubSpot.png)

###### [How to unbounce a contact in HubSpot](https://koalify.io/blog/unbounce-contact-hubspot)

By [Jonas](https://koalify.io/blog/author/jonas)  9 October, 2026

A customer replies to a sales email asking why they never got your newsletter. You check their...

[Read More](https://koalify.io/blog/unbounce-contact-hubspot)

![HubSpot Email validation failed vs Not a valid email address](https://koalify.io/hs-fs/hubfs/HubSpot%20Email%20validation%20failed%20when%20you%20send%20or%20schedule%20a%20marketing%20email.png?width=370&height=220&name=HubSpot%20Email%20validation%20failed%20when%20you%20send%20or%20schedule%20a%20marketing%20email.png)

###### [HubSpot Email validation failed vs Not a valid email address](https://koalify.io/blog/hubspot-email-validation-failed)

By [Jonas](https://koalify.io/blog/author/jonas)  6 October, 2026

Your newsletter is ready. You click Schedule, and HubSpot answers with a red banner: **Error: Email...**

[Read More](https://koalify.io/blog/hubspot-email-validation-failed)

![Sent, delivered, dropped, bounced: HubSpot email statuses explained](https://koalify.io/hs-fs/hubfs/Sent%2c%20delivered%20dropped%20bounced%20HubSpot%20email%20statuses%20explained.png?width=370&height=220&name=Sent%2c%20delivered%20dropped%20bounced%20HubSpot%20email%20statuses%20explained.png)

###### [Sent, delivered, dropped, bounced: HubSpot email statuses explained](https://koalify.io/blog/sent-delivered-dropped-bounced-hubspot-email-statuses-explained)

By [Jonas](https://koalify.io/blog/author/jonas)  5 October, 2026

A sales rep messages you: "Our biggest prospect says they never got the webinar invite." You open...

[Read More](https://koalify.io/blog/sent-delivered-dropped-bounced-hubspot-email-statuses-explained)

![The HubSpot email health tool: what your score means and what it misses](https://koalify.io/hs-fs/hubfs/What%20your%20email%20health%20score%20means.png?width=370&height=220&name=What%20your%20email%20health%20score%20means.png)

###### [The HubSpot email health tool: what your score means and what it misses](https://koalify.io/blog/hubspot-email-health-tool-what-your-score-means)

By [Jonas](https://koalify.io/blog/author/jonas)  1 October, 2026

Your HubSpot email health score dropped from 8 to 6 last month. Is that a subject-line problem, a...

[Read More](https://koalify.io/blog/hubspot-email-health-tool-what-your-score-means)

![What graymail is, and how it quietly kills HubSpot deliverability](https://koalify.io/hs-fs/hubfs/koalify-what-is-graymail.png?width=370&height=220&name=koalify-what-is-graymail.png)

###### [What graymail is, and how it quietly kills HubSpot deliverability](https://koalify.io/blog/what-graymail-is-and-how-it-quietly-kills-hubspot-deliverability)

By [Jonas](https://koalify.io/blog/author/jonas)  30 September, 2026

Nobody complains about your monthly product update. Nobody reports it as spam, and hardly anyone...

[Read More](https://koalify.io/blog/what-graymail-is-and-how-it-quietly-kills-hubspot-deliverability)

![Unengaged contacts in HubSpot: why sending to them hurts everyone](https://koalify.io/hs-fs/hubfs/Unengaged%20contacts%20in%20HubSpot%20why%20sending%20to%20them%20hurts%20everyone.png?width=370&height=220&name=Unengaged%20contacts%20in%20HubSpot%20why%20sending%20to%20them%20hurts%20everyone.png)

###### [Unengaged contacts in HubSpot: why sending to them hurts everyone](https://koalify.io/blog/unengaged-contacts-in-hubspot-why-sending-to-them-hurts)

By [Jonas](https://koalify.io/blog/author/jonas)  25 September, 2026

Someone on your team wants the whole database in the monthly newsletter. It's 80,000 contacts....

[Read More](https://koalify.io/blog/unengaged-contacts-in-hubspot-why-sending-to-them-hurts)

![HubSpot sender reputation: what it is, how to check it, and how to rebuild it](https://koalify.io/hs-fs/hubfs/How%20to%20check%20your%20sender%20reputation%20in%20HubSpot.png?width=370&height=220&name=How%20to%20check%20your%20sender%20reputation%20in%20HubSpot.png)

###### [HubSpot sender reputation: what it is, how to check it, and how to rebuild it](https://koalify.io/blog/hubspot-sender-reputation-how-to-check-it-and-rebuild-it)

By [Jonas](https://koalify.io/blog/author/jonas)  21 September, 2026

Your newsletter used to get a 30% open rate. The last three sends came in at 14%, 11% and 12%....

[Read More](https://koalify.io/blog/hubspot-sender-reputation-how-to-check-it-and-rebuild-it)

![How to validate imported emails in HubSpot before they hit a list](https://koalify.io/hs-fs/hubfs/How%20to%20validate%20imported%20emails%20in%20HubSpot%20before%20they%20hit%20a%20list%20with%20error.png?width=370&height=220&name=How%20to%20validate%20imported%20emails%20in%20HubSpot%20before%20they%20hit%20a%20list%20with%20error.png)

###### [How to validate imported emails in HubSpot before they hit a list](https://koalify.io/blog/how-to-validate-imported-emails-in-hubspot-before-they-hit-a-list)

By [Jonas](https://koalify.io/blog/author/jonas)  9 September, 2026

You've just imported a list into HubSpot. Maybe it came across from your old CRM during a...

[Read More](https://koalify.io/blog/how-to-validate-imported-emails-in-hubspot-before-they-hit-a-list)

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###### Category

- [HubSpot Data Quality](https://koalify.io/blog/tag/hubspot-data-quality)
- [HubSpot Email Validation](https://koalify.io/blog/tag/hubspot-email-validation)
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- [HubSpot Associations](https://koalify.io/blog/tag/hubspot-associations)
- [HubSpot Deduplication](https://koalify.io/blog/tag/hubspot-deduplication)

###### Popular Post

- [HubSpot best practices for contacts that leave a company](https://koalify.io/blog/hubspot-best-practices-for-contacts-that-leave-a-company)
- [How to Bulk Merge HubSpot Duplicates: Contacts, Companies, Deals and More](https://koalify.io/blog/how-to-bulk-merge-hubspot-duplicates-contacts-companies-more)
- [How to Merge Companies in HubSpot (Safely, Manually or in Bulk)](https://koalify.io/blog/how-to-merge-companies-in-hubspot-manual-or-in-bulk)
- [HubSpot Deduplication: How to Find, Manage, and Remove Duplicates in HubSpot](https://koalify.io/blog/hubspot-deduplication-the-ultimate-guide-to-zero-duplicates-in-hubspot)
- [How to Merge Duplicate Contacts in HubSpot Without Losing Data](https://koalify.io/blog/how-to-merge-contacts-in-hubspot-manual-or-in-bulk)

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## Deduplication

[Deduplication for HubSpot](https://koalify.io)

[Pricing](https://koalify.io/pricing)

[Knowledge Base](https://koalify.io/knowledge-base)

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[Data Processing Addendum](https://koalify.io/data-processing-addendum)

[HubSpot Deduplication Tools](https://koalify.io/best-hubspot-deduplication-apps)

[vs. HubSpot Native](https://koalify.io/compare/koalify-vs-hubspot-native-deduplication)

[vs. Insycle](https://koalify.io/compare/koalify-vs-insycle-hubspot-deduplication)

[vs. Dedupely](https://koalify.io/compare/koalify-vs-dedupely)

[HubSpot Deduplication Guide](https://koalify.io/blog/hubspot-deduplication-the-ultimate-guide-to-zero-duplicates-in-hubspot)

[Merge HubSpot Contacts](https://koalify.io/blog/how-to-merge-contacts-in-hubspot-manual-or-in-bulk)

[Merge HubSpot Companies](https://koalify.io/blog/how-to-merge-companies-in-hubspot-manual-or-in-bulk)

[Merge HubSpot Deals](https://koalify.io/blog/how-to-merge-deals-in-hubspot-manual-or-in-bulk)

[Bulk Merge HubSpot](https://koalify.io/blog/how-to-bulk-merge-hubspot-duplicates-contacts-companies-more)

## Email Validation

[Email Validation for HubSpot](https://koalify.io/hubspot-email-validation)

[Pricing](https://koalify.io/hubspot-email-validation-pricing-koalify)

[Knowledge Base](https://koalify.io/email-validation-knowledge-base)

[Terms of Service](https://koalify.io/terms-of-service-email-validation)

[Data Processing Addendum](https://koalify.io/data-processing-addendum-email-validation)

[HubSpot Email Validation Tools](https://koalify.io/best-email-validation-tools-for-hubspot)

[vs. NeverBounce](https://koalify.io/compare/koalify-vs-neverbounce)

[vs. ZeroBounce](https://koalify.io/compare/koalify-vs-zerobounce)

[vs. Kickbox](https://koalify.io/compare/koalify-vs-kickbox)

[HubSpot Email Validation Guide](https://koalify.io/hubspot-email-validation-guide)

[HubSpot Email Deliverability](https://koalify.io/hubspot-email-deliverability)

[HubSpot Bounce Rate](https://koalify.io/hubspot-bounce-rate)

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