What should I do if my emails get throttled
If mailbox providers feel skeptic of your email volume or sending practices, they may defer your emails.
This limiting of or delay in accepting emails is called email throttling.
When you send emails to your recipients, any of the following actions can happen to your emails:
- Delivered - They may get successfully delivered to your recipients' inboxes.
- Bounced - They may not be delivered to the recipient end and get returned with an error message stating reason for the bounce.
- Throttled - Your emails may not be accepted by the recipient system for some time and will wait in a queue. Zoho Campaigns will try sending the emails in queue to the recipient system again. This results in delayed delivery of your emails. Sometimes, the recipient system doesn't accept the emails in queue for a long time, and will bounce them instead.
Your emails may get throttled if:
- You're new to email marketing or use a new business domain and send emails beyond the threshold limit of the recipient systems. This may make your emails seem suspicious, as there's no history of recipients' previous responses for the sender domain.
- You have a negative response such as marking of spam, unsubscribes, and abuse complaints from your recipients in previous emails.
- Your previous emails have a high bounce rate.
- You send emails to spam traps set by that recipient system.
- Your email content and sending practices resemble spam.
Though the email restrictions set by recipient systems affect email deliverability, when you plan your emails based on best practices, you can avoid your emails getting throttled. In fact, you can even improve your contact engagement as an added benefit.
How to avoid email throttling
Targeting contacts
Filter frequently communicated contacts, those who are very interested in your emails, and those you are confident will have a positive response.
Target these contacts first with your emails. When you're sure that your emails are not throttled and deliverability is not affected, you can gradually add the less interested contacts.
Warming up your domain with the recipient system
New sender domains are considered cold by mailbox providers (recipient systems). The recipient systems check email sending domains for previous fingerprints or conversation between the sender and recipients.
When you send emails from a cold domain, recipient systems throttle or block the emails, or may even classify them as spam.
Distribute crowded contact base
If your mailing list has most of the recipients concentrated to a few recipient domains, and if those domains are throttling your emails, you should segment your list and distribute the email addresses from the crowded recipient domains to several segments.
For example, Patricia has most of her contacts from zylker.com, and zylker.com is throttling her emails if they're beyond 100 per day. So, she has divided her 1000 zylker.com recipient addresses to 10 different segments. These 10 different segments also include recipient email addresses from other recipient domains that don't throttle her emails.
Identify the recipient domains that throttle your emails and segment those email addresses into various lists, as described in the previous point.
Check bounce error messages in your campaign report. If there are error messages like "Too many emails in short duration", then schedule your emails to avoid email throttling.
Zoho CRM Training Programs
Learn how to use the best tools for sales force automation and better customer engagement from Zoho's implementation specialists.
Zoho DataPrep Personalized Demo
If you'd like a personalized walk-through of our data preparation tool, please request a demo and we'll be happy to show you how to get the best out of Zoho DataPrep.
- Zoho Workerly Home
- Forums
- Connect With Us:
- Zoho Recruit Home
- Forums
- Connect With Us:
Still can't find what you're looking for?
Write to us: support@zohoforms.com
Zoho Sheet Resources
Zoho Forms Resources
New to Zoho Sign?
Zoho Sign Resources
Sign, Paperless!
New to Zoho TeamInbox?
Zoho TeamInbox Resources
New to Zoho ZeptoMail?
Zoho DataPrep Resources
Design. Discuss. Deliver.
New to Zoho Workerly?
New to Zoho Recruit?
New to Bigin?
New to Zoho CRM?
New to Zoho Projects?
New to Zoho Sprints?
New to Zoho Assist?
Related Articles
Get Consent
This feature will not be available for accounts created after September 22, 2021. You can enable GDPR settings in Settings->Compliance settings. These changes happened owing to the recent Topics update. We aim to protect individuals from spam that ...Can I send follow-up emails to users who have opened my emails?
Yes. To send follow-ups to those who've opened your emails: From the navigation toolbar, choose Reports and select Sent Campaigns. Select the campaign to send follow-ups for. Click the Send Follow-up button. Under Chain Campaign, select 'For Opens' ...How can you use email response to get contacts who have clicked or not clicked on links in your emails
Email response lets you enable actions for contacts to perform based on their responses to emails sent to them. So what happens to those contacts who've opened but not clicked on any links in your emails? This guide will help you configure the email ...Why am I not able to send emails on the free plan?
For the new forever free plan, the number of contacts must be within 2000 to send emails. If you have contacts more than 2000, then you will need to delete some contacts or move to a paid plan to send emails.Multi-thread emails (Reply/Forward)
To maintain a consistent conversation across many emails, multiple threads are used. Example: "Re: Fitness equipment order" or "Fwd: Fitness equipment order" Sometimes even two or more threads are employed. For instance, "Fwd: Re: Fwd: Fitness ...