What should I do if my emails get throttled - Online Help | Zoho Campaigns

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:

  1. Delivered - They may get successfully delivered to your recipients' inboxes.
  1. Bounced - They may not be delivered to the recipient end and get returned with an error message stating reason for the bounce.
  1. 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:

  1. 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.
  1. You have a negative response such as marking of spam, unsubscribes, and abuse complaints from your recipients in previous emails.
  1. Your previous emails have a high bounce rate.
  1. You send emails to spam traps set by that recipient system.
  1. 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.

    Access your files securely from anywhere

      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 CRM Training
        Redefine the way you work
        with Zoho Workplace

          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 CRM Training

            Create, share, and deliver

            beautiful slides from anywhere.

            Get Started Now


              Zoho Sign now offers specialized one-on-one training for both administrators and developers.

              BOOK A SESSION






                          Quick Links Workflow Automation Data Collection
                          Web Forms Enterprise Begin Data Collection
                          Interactive Forms Workplace Data Collection App
                          Offline Forms Customer Service Accessible Forms
                          Digital Forms Marketing Forms for Small Business
                          HTML Forms Education Forms for Enterprise
                          Contact Forms E-commerce Forms for any business
                          Lead Generation Forms Healthcare Forms for Startups
                          Wordpress Forms Customer onboarding Order Forms for Small Business
                          No Code Forms Construction RSVP tool for holidays
                          Free Forms Travel
                          Prefill Forms Non-Profit

                          Intake Forms Legal

                          Form Designer HR

                          Card Forms Food
                          Assign Forms Photography

                          Translate Forms Real Estate
                          Electronic Forms

                          Notification Emails for Forms Alternatives
                          Holiday Forms Google Forms alternative 
                          Form to PDF Jotform alternative





                                            You are currently viewing the help pages of Qntrl’s earlier version. Click here to view our latest version—Qntrl 3.0's help articles.




                                                Manage your brands on social media

                                                  Zoho Desk Resources

                                                  • Desk Community Learning Series


                                                  • Digest


                                                  • Functions


                                                  • Meetups


                                                  • Kbase


                                                  • Resources


                                                  • Glossary


                                                  • Desk Marketplace


                                                  • MVP Corner


                                                  • Word of the Day


                                                    Zoho Marketing Automation

                                                      Zoho Sheet Resources

                                                       

                                                          Zoho Forms Resources


                                                            Secure your business
                                                            communication with Zoho Mail


                                                            Mail on the move with
                                                            Zoho Mail mobile application

                                                              Stay on top of your schedule
                                                              at all times


                                                              Carry your calendar with you
                                                              Anytime, anywhere




                                                                    Zoho Sign Resources

                                                                      Sign, Paperless!

                                                                      Sign and send business documents on the go!

                                                                      Get Started Now




                                                                              Zoho TeamInbox Resources



                                                                                      Zoho DataPrep Resources



                                                                                        Zoho DataPrep Demo

                                                                                        Get a personalized demo or POC

                                                                                        REGISTER NOW


                                                                                          Design. Discuss. Deliver.

                                                                                          Create visually engaging stories with Zoho Show.

                                                                                          Get Started Now









                                                                                                              • 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' ...
                                                                                                              • 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.
                                                                                                              • 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 ...
                                                                                                              • 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 ...
                                                                                                                Wherever you are is as good as
                                                                                                                your workplace

                                                                                                                  Resources

                                                                                                                  Videos

                                                                                                                  Watch comprehensive videos on features and other important topics that will help you master Zoho CRM.



                                                                                                                  eBooks

                                                                                                                  Download free eBooks and access a range of topics to get deeper insight on successfully using Zoho CRM.



                                                                                                                  Webinars

                                                                                                                  Sign up for our webinars and learn the Zoho CRM basics, from customization to sales force automation and more.



                                                                                                                  CRM Tips

                                                                                                                  Make the most of Zoho CRM with these useful tips.



                                                                                                                    Zoho Show Resources