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# Email deliverability metrics

[PremiumThis feature is available for Premium plans.](/accounts-and-workspaces/plan-features/) [EnterpriseThis feature is available for Enterprise plans.](/accounts-and-workspaces/plan-features/)

The [**Deliverability** tab in the **Analysis** section of your workspace](https://fly.customer.io/workspaces/last/journeys/analysis/deliverability) shows key email metrics by provider. These metrics represent all outbound emails from your workspace over a timeframe you select. This data can help you identify providers you’re performing poorly with so that you can take action to improve deliverability and engagement with your emails.

[![An example of the deliverability metrics page](https://docs.customer.io/images/deliverability-metrics.png)](#4fbe7c3fd934f5df79bbb073d4c5c0a6-lightbox)

## Metrics[](#metrics)

The **Provider** column shows the provider or provider group name: the email services that your recipients use.

The **Outbound** column adds up to 100%—because it represents all outbound emails from your workspace over the timeframe. But for each row, you’ll see that the metrics aren’t additive. Each metric is calculated as a percentage of the total outbound emails sent to a provider. For example, in the screenshot above, you’ll see that 62.1% of outbound emails went to a Google Workspace. Of those emails, 99% were delivered.

*   **Delivery**: The percentage of emails successfully delivered to people within a provider
*   **Bounce**: The percentage of emails that were rejected or bounced by a provider
*   **Open**: The percentage of emails that were opened by users within a provider
*   **Click**: The percentage of emails that were clicked by users within a provider
*   **Spam**: The percentage of user-generated spam complaints for a provider

## Metrics thresholds and color codes[](#thresholds-color-codes)

You may notice some delivery metrics highlighted in red or yellow. These colors indicate metrics that are below ideal thresholds. Hover over any color-coded value in the interface to see the ideal values for that metric.

*   **Red** represents an “at-risk” threshold. It means the metric is actively harming your sender reputation and negatively impacts deliverability.
*   **Yellow** indicates a “needs improvement” status. While not immediately critical, performance at this level may lead to a decline in reputation or deliverability over time if not addressed.
*   `—` indicates that the metric is not applicable for that provider. In particular, Google doesn’t publish spam complaint data, which prevents us from calculating and displaying your spam complaint rate for Google-based providers.

Metric

Good

Yellow: needs improvement

Red: at-risk

Delivery

≥ 98%

95-97.9%

< 95%

Bounce

≤ 1%

1-5%

\> 5%

Spam

< 0.05%

0.05-0.1%

\> 0.1%

Open

≥ 30%

15-29.9%

< 15%

Click

≥ 2%

1-1.9%

< 1%

Click-to-Open Rate

≥ 10%

5-9.9%

< 5%

When you come across troublesome metrics, you may want to prune your people list. Making sure that your list of people *only* includes people who still want, and engage with, your emails is a great way to achieve high delivery metrics and reduce bounce/spam rates. See our [Deliverability Best Practices](/journeys/email-deliverability-best-practices/) to learn more about the factors that affect deliverability and engagement.

## Sorting and date ranges[](#sorting-and-date-ranges)

Click the calendar in the upper-right corner of the page to change the date range for your metrics. Click **Sort** or a column header to sort metrics by a different metric/column.

Update the date range

Change the sorting column

[![Change the date range](https://docs.customer.io/images/deliverability-metrics-calendar.png)](#8db7c18e9ed6e6e572cecb139b5c8595-lightbox)

[![Sort metrics](https://docs.customer.io/images/deliverability-metrics-sort.png)](#eb227f21c4187945f5e3bbe12231b6dd-lightbox)

## Frequently Asked Questions[](#faq)

### Why are some providers grouped into broader/regional categories?[](#why-are-some-providers-grouped-into-broaderregional-categories)

We group smaller providers together by region or provider to increase statistical significance because individual recipient domains often represent a small market share within a region or provider. See the [list of providers below](#provider-groups) for more information.

### I’ve sent emails to a provider, but it doesn’t show up in the list. Why not?[](#ive-sent-emails-to-a-provider-but-it-doesnt-show-up-in-the-list-why-not)

You must send at least 1000 emails to a provider for us to surface data for that provider. Or if you’ve sent emails to a domain belonging to a [provider we don’t surface data from](#provider-groups), you won’t see it in the list.

## Provider Groups[](#provider-groups)

Below is a list of the specific providers we surface data from, grouped under broad regional designations.

Mailbox Provider

Associated Domains

Apple

icloud.com  
mac.com  
me.com  
privaterelay.appleid.com

Gmail

gmail.com  
googlemail.com  
google.com

Google Workspace

GSuite (Business Domains)

Googlers

google.com

Canadian

bell.net  
cogeco.ca  
rogers.com  
sasktel.net  
shaw.ca  
sympatico.ca  
telus.net  
videotron.ca

Chinese

123.com  
126.com  
163.com  
easystack.cn  
foxmail.com  
qq.com  
sina.com  
vip.126.com  
vip.163.com  
vip.qq.com

German

arcor.de  
freenet.de  
gmx.at  
gmx.ch  
gmx.com  
gmx.de  
gmx.net  
mail.com  
online.de  
t-online.de  
web.de

French

bbox.fr  
free.fr  
laposte.fr  
laposte.net  
neuf.fr  
orange.fr  
sfr.fr

Italian

alice.it  
blu.it  
fastwebnet.it  
inwind.it  
iol.it  
libero.it  
pec.libero.it  
tin.it  
virgilio.it

Japanese

docomo.ne.jp  
ezweb.ne.jp  
nifty.com  
yahoo.co.jp

Other EU

abv.bg  
bluewin.ch  
centrum.cz  
hetnet.nl  
home.nl  
mail.bg  
onet.pl  
planet.nl  
seznam.cz  
skynet.net  
telenet.be  
ukr.net  
wp.pl  
ziggo.nl

Other US

ameritech.net  
att.net  
bellsouth.net  
charter.net  
comcast.com  
comcast.net  
cox.net  
currently.com  
earthlink.net  
flash.net  
mindspring.com  
optonline.net  
pacbell.net  
prodigy.net  
sbcglobal.net  
snet.net  
swbell.net

Outlook 365

O365 (Business Domains)

Outlook EU

hotmail.be  
hotmail.ch  
hotmail.co.uk  
hotmail.com.tr  
hotmail.de  
hotmail.dk  
hotmail.es  
hotmail.fi  
hotmail.fr  
hotmail.gr  
hotmail.it  
hotmail.no  
hotmail.se  
live.at  
live.be  
live.co.uk  
live.co.za  
live.com.pt  
live.de  
live.dk  
live.fr  
live.ie  
live.it  
live.nl  
live.no  
live.se  
outlook.be  
outlook.cz  
outlook.de  
outlook.dk  
outlook.es  
outlook.fr  
outlook.hu  
outlook.it  
outlook.pt

Outlook US

hotmail.com  
live.com  
microsoft.com  
msn.com  
outlook.com  
outlook.jp  
passport.com

Proton

pm.me  
proton.me  
protonmail.ch  
protonmail.com

Rackspace

rackspace.com

Russian

bk.ru  
corp.mail.ru  
inbox.ru  
internet.ru  
list.ru  
mail.ru  
my.com  
rambler.ru  
tut.by  
ya.ru  
yandex.com  
yandex.ru

UK

btinternet.com  
ntlworld.com  
talktalk.net

United Online

juno.com  
mybluelight.com  
mysite.com  
netzero.com  
netzero.net  
untd.com

Yahoo EU

sky.com  
yahoo.at  
yahoo.be  
yahoo.bg  
yahoo.co.uk  
yahoo.co.za  
yahoo.com.hr  
yahoo.com.ua  
yahoo.cz  
yahoo.de  
yahoo.dk  
yahoo.ee  
yahoo.es  
yahoo.fi  
yahoo.fr  
yahoo.gr  
yahoo.hu  
yahoo.ie  
yahoo.it  
yahoo.lv  
yahoo.nl  
yahoo.no  
yahoo.pl  
yahoo.pt  
yahoo.ro  
yahoo.se  
yahoo.sk

Yahoo US

aim.com  
aol.co.uk  
aol.com  
aol.de  
aol.fr  
citlink.net  
cs.com  
epix.net  
frontier.com  
frontiernet.net  
myyahoo.com  
netscape.net  
rocketmail.com  
verizon.net  
y7mail.com  
yahoo.ca  
yahoo.co.nz  
yahoo.com  
yahoo.com.ar  
yahoo.com.au  
yahoo.com.br  
yahoo.com.mx  
ymail.com