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Email Deliverability

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Solved
MMoffett on February 26, 2026
Hi, We have a situation where we have a always had a handful of people opt out of our subscription types, but then later come in and fill out a form, and then sometimes complain that they didn't get the email with the content they requested (becaus read more
0 upvote
3 Replies
Accepted solution
Hall of Famer | Partner
February 27, 2026 11:48
@MMoffett aside from sending yourself a notification when an unsubscribed contacts submits a form and then delivering the requested resource via yo...read more
Solved
TeamBEI on February 23, 2026
Hi there, We have been experiencing a reoccuring issue where some of our emails have been ending up in our clients' spam folders. This wasn't an issue until we used the Hubspot email marketing tool. We had quite a few emails bounced back aft read more
0 upvote
1 Reply
Accepted solution
Hall of Famer | Partner
February 23, 2026 11:40
Hi @TeamBEI , Theoretically yes, although I've never experienced this and find it unlikely. Have you checked if your MX records are in o...read more
Solved
taylorjamila on February 19, 2026
Hello, My marketing team has been asking questions about the low engagement filter HubSpot has when sending emails. It appears that customers with low engagement stop receiving the emails we send. This drops the total of emails delivered. Is th read more
0 upvote
3 Replies
Accepted solution
Key Advisor | Platinum Partner
February 23, 2026 05:28
Hi @taylorjamila , HubSpot does not automatically stop sending to contacts just because they are low engagement. Contacts who unsubscribed, ...read more
Solved
MThomas96 on February 17, 2026
Hi, I created an email campaign and sent it to 4 people as a test run. The email addresses included 2 gmail addresses, an outlook.com and a mediaservicesunlimited.net address. I waited an hour and never got any of them. I checked my Hubspot accou read more
0 upvote
12 Replies
Accepted solution
Hall of Famer | Partner
February 18, 2026 09:56
@MThomas96 you can send the email to more contacts, simply not again to the same contacts: https://knowledge.hubspot.com/marketing-email/send-mark...read more
Solved
SBelz on February 16, 2026
Hi everyone. I have two active email campaigns and they both have high bounce back rates. When emails are sent out, they are causing in box shutdown from our sales team. What can be done to resolve the high bounce rate and stop the mailbox shutdown read more
0 upvote
6 Replies
Accepted solution
Hall of Famer | Partner
February 17, 2026 13:07
@SBelz you're not going to be able to solve this with email validation -- this is something different than what you described in your initial messa...read more
Solved
Rohan28 on February 16, 2026
Hi Everyone, I have a contact list. But the company contact forms never had email opt-in checkboxes. So I don't have their consent to send marketing emails. How do I get their consent? Can I use a service provider like Mailchimp, Zoho, or Hubspo read more
0 upvote
4 Replies
Accepted solution
Hall of Famer | Partner
February 16, 2026 06:41
@Rohan28 unless you have the GDPR settings in HubSpot enabled, HubSpot will let you send emails to contacts without an opt-in: https://knowledge.h...read more
Solved
CPrescott30 on February 10, 2026
Hello, basically I'm trying to answer the question "What email infrastructure do I actually need?" for marketing emails with HubSpot. I've constantly seen and read "create an email sending subdomain" but it's fuzzy on if it's as simple as settin read more
0 upvote
4 Replies
Accepted solution
Hall of Famer | Partner
February 12, 2026 00:02
Hi @CPrescott30 , I find that these two articles explain quite well what the benefits of using subdomains are -- and which influence using one...read more
JPeñaEscoffié on February 03, 2026
¡Hello! A Mexican customer is questioning why Get Response is showing better open rates on email webinar campaigns. We can confirm that all HubSpot email settings are correct, including authentication (SPF & DMARC) and the email sent is w read more
Member | Diamond Partner
February 03, 2026 20:19
Hi, @STierney ! Hope you're doing fine. Thanks for your answer. I agree with your comments and recommendations. It would be great to ha...read more
Solved
MDePardo on January 27, 2026
Apologies if this is the wrong board for this in advanced. I would like to build a "keep warm" email campaign that contacts can be put into to receive drip emails from us after they finished a sequence. The list is about 500 contacts big an read more
1 upvote
2 Replies
Accepted solution
Most Valuable Member | Platinum Partner
January 30, 2026 11:39
A great question, @MDePardo , and I'm glad you're thinking about your audience through the email sending score concern. Because at the end of the da...read more
DLalonde on January 22, 2026
Hello! I'm looking for maybe some assistance or extra wisdom from HubSpot pros, but I'm currently facing a very odd issue that I'm unsure how to adjust and fix. My organization sends out monthly newsletters to our subscriber base of over 5,000 peo read more
0 upvote
1 Reply
HubSpot Alumni
January 22, 2026 17:08
Hello there @DLalonde and thank you for your question! I'm gonna ping a few community experts who can be helpful and find a solution for your...read more
Solved
ARiaz96 on January 21, 2026
Hi, Im trying to analyse what is affecting our company's bounce rate. Top reason: Most bounces are due to "Mailbox Issues" (like full inbox, invalid mailbox, or recipient server not accepting emails)-As per its AI anlaysis tool. Bounce rate brea read more
0 upvote
2 Replies
Accepted solution
Hall of Famer | Partner
January 21, 2026 03:20
Hi @ARiaz96 , You won't get a definitive answer as to why emails bounce. You can further poke around in the data and create reports but withou...read more
Solved
SBuck0 on January 19, 2026
Hey all, Just wanted to reach out to see if anyone has been having issues recieveing email reminders from Hubspot. My IT Team have advised they cannot see any flow coming into our servers and the emails have stopped coming through since Monday. read more
0 upvote
7 Replies
Accepted solution
Member
January 21, 2026 16:35
Hi All, There was a Bounce issue on the servers end
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