iPhone 的邮件(Mail)应用程序通常适用于大多数电子邮件服务提供商。但是有几个原因（例如冲突的系统设置、与软件相关的问题以及电子邮件协议的差异）可能会阻止它更新您的邮箱。
因此，如果您在 iPhone 上的“邮件(Mail)”中没有更新电子邮件有任何问题，下面的解决方案和建议应该可以帮助您解决这个问题。
执行手动刷新
您是否尝试过在 iPhone 上刷新邮件？(Mail)只需(Just)在屏幕上向下拖动手指，然后在看到旋转的轮子时松开它。这应该会强制应用程序开始与电子邮件服务器通信。
刷新邮件应用程序还有助于使用使用(Mail)Fetch而不是Push的帐户手动更新邮箱（稍后会详细介绍）。
强制退出并重新启动邮件
如果刷新邮件(Mail)应用程序没有帮助，请尝试强制退出并重新启动它。这通常有助于解决 iPhone 上应用程序中的奇怪技术问题。
要强制退出邮件(Mail)应用程序，请从 iPhone 屏幕底部执行向上滑动手势。然后，将Mail应用卡片向上拖出App Switcher。通过重新启动应用程序来遵循(Follow)这一点。
检查通知设置
如果问题与邮件(Mail)应用程序的通知有关，请打开设置(Settings )应用程序并选择通知(Notifications )>邮件(Mail)。然后，确保按照您想要的方式设置 通知设置（警报(Alerts)、声音(Sounds)和徽章）。(Badges)
您还必须检查各个帐户的通知设置（点击自定义通知(Custom Notifications)）并确保VIP 设置(VIP Settings )没有覆盖它们。
检查蜂窝数据设置
如果Mail应用程序在使用蜂窝数据时无法更新您的电子邮件，您必须确保它没有被禁止使用 iPhone 的移动带宽。
为此，请打开“设置”(Settings )应用并选择“蜂窝(Cellular)” 。然后，向下滚动应用程序并打开Mail(Mail)旁边的开关。
禁用低数据模式(Low Data Mode)（蜂窝和Wi-Fi）
Apple 在 iOS 13 中引入了低数据模式(Low Data Mode)，以帮助节省Wi-Fi和蜂窝网络的带宽。但是，该功能还可以限制邮件(Mail)等应用程序中与互联网相关的活动。因此，请检查您的Wi-Fi或蜂窝网络设置并尝试将其关闭。
禁用低数据模式 - Wi-Fi(Disable Low Data Mode – Wi-Fi)
转到设置(Settings )> Wi-Fi，然后点击活动 Wi-Fi 连接旁边的信息图标。(Info )然后关闭低数据模式(Low Data Mode)旁边的开关。
禁用低数据模式 - 蜂窝(Disable Low Data Mode – Cellular)
转到设置(Settings )>蜂窝(Cellular )>蜂窝数据选项(Cellular Data Options)，然后关闭低数据模式(Low Data Mode)旁边的开关。
禁用低功耗模式
同样，尝试禁用低功耗模式(Low Power Mode)。这是另一个通过减少 iPhone 上的各种后台活动对Mail(Mail)应用程序产生不利影响的功能。为此，请转到“设置”(Settings ) > “电池(Battery )”并关闭“低功耗模式(Low Power Mode)”旁边的开关。
开启和关闭飞机
切换飞行模式(Airplane Mode)还可以解决阻止邮件(Mail)应用程序更新的潜在连接问题。为此，请打开 iPhone 的设置应用程序并打开(Settings )飞行模式(Airplane Mode)旁边的开关。然后，等待最多 10 秒，然后将其关闭。
如果您使用 Wi-Fi，您也可以尝试更新 IP 租约(renewing the IP lease)或软重置路由器(soft-resetting the router)。
更改域名服务器
在Wi-Fi连接上，将DNS（域名服务器(Domain Name Servers)）更改为流行的服务（例如Google DNS ）最终可以解决其他与连接相关的问题。
为此，请先转到Settings > Wi-Fi。然后，点击活动 Wi-Fi 连接旁边的信息图标，然后选择(Info )配置 DNS(Configure DNS ) >手动(Manual)。然后输入并保存以下DNS地址：
8.8.8.8
8.8.4.4
在蜂窝连接上，您只能使用第三方应用程序（例如DNS Override ）更改(DNS Override)DNS服务器。
重启 iPhone
关闭您的 iPhone 并重新启动它是另一个可行的修复方法，可以帮助解决特定于应用程序的问题。
为此，请转到“设置”(Settings ) > “常规(General )” > “关机”(Shut Down)，然后将电源(Power )图标拖到右侧。在您的 iPhone 完全关闭后，按住侧边(Side )按钮重新启动它。
检查邮件设置
电子邮件提供商可以使用Push或Fetch来更新您的电子邮件。但是，如果提供选项，您必须将帐户设置为Push，因为这会提示电子邮件服务器“推送”您的电子邮件，而不是您的 iPhone 尝试“获取”它们。因此，值得花时间仔细检查您的电子邮件更新设置。
为此，请先转到Settings > Mail > Accounts > Fetch New Data。然后，点击您的电子邮件服务提供商并选择推送(Push)。或者，如果您仅对特定邮箱有问题，您可以通过点击将其设置为推送邮箱。
如果不支持Push （如(Push)Gmail的情况），请将其设置为Fetch。然后，您必须将更新频率选择为可能的最快设置 -每 15 分钟(Every 15 Minutes)。如果您想更快地更新您的电子邮件，您必须手动刷新邮件(Mail)应用程序。
删除并重新添加帐户
您还可以尝试删除并重新添加任何拒绝更新的有问题的帐户。这应该有助于解决配置不正确或损坏的问题。
为此，请转到“设置”(Settings ) > “邮件(Mail )” > “帐户(Accounts )” ，然后点击您要删除的帐户。
点按Delete Account 即可(Delete Account)。
然后，选择添加帐户(Add Account )选项并从头开始完成设置过程。如果您尝试使用“其他”设置设置电子邮件服务提供商，(Other )请(Make)确保选择正确的协议（IMAP 或 POP(IMAP or POP) ） 。
更新 iPhone
iPhone 系统软件的错误和故障也会阻止Mail应用程序更新您的电子邮件。因此(Hence)，最好通过前往设置(Settings )>常规(General )>软件更新(Software Update)来立即更新 iOS 。
重置网络设置
重置网络设置有助于解决邮件(Mail)应用程序的任何潜在连接问题。
为此，请打开“设置”(Settings )应用并点击“通用(General )” > “传输或重置 iPhone(Transfer or Reset iPhone) ” > “重置(Reset)” 。然后，选择重置网络设置(Reset Network Settings)。
您必须通过手动重新连接到任何 Wi-Fi 网络来重置网络设置。然后，强制退出并重新打开邮件(Mail)应用程序并检查问题是否再次出现。
重新安装邮件应用程序
Mail 是 iPhone 上现有应用程序组合的一部分，但您仍然可以像任何其他应用程序一样重新安装它。这应该为您提供从头开始设置您的电子邮件帐户并避免当前安装的持续问题的空白。
要删除邮件应用程序，请前往“设置”(Settings ) > “通用(General )” > “ iPhone 存储(iPhone Storage )” > “邮件”(Mail )，然后轻点“删除应用程序(Delete App)” 。
通过从App Store重新下载 Mail 应用程序(redownloading the Mail app)来遵循这一点。然后，启动它并登录到您的电子邮件帐户。当然，您始终可以通过转到Settings > Mail > Accounts来设置其他帐户。
邮件应用程序仍然不更新电子邮件？
如果邮件(Mail)应用程序仍然无法更新您的邮箱，您可能需要联系您的电子邮件服务提供商寻求帮助，因为这可能是由于您无法控制的问题。
或者，您可以考虑切换到与电子邮件服务提供商本身相关的电子邮件客户端（例如Gmail或Outlook ） ，并检查是否会产生任何积极的结果。
How to Fix Email Not Updating in Mail on iPhone
The iPhone’s Mail app generally works well with most emаil service prоviders. But ѕeveral reasons—such as conflictіng system settings, software-related issues, and differenceѕ in email protocols—can prevent it from updating yоur mailboxes.
So if you have any problems with the email not updating in Mail on iPhone, the solutions and suggestions below should help you fix that.
Perform a Manual Refresh
Have you tried refreshing Mail on your iPhone? Just drag your finger down the screen and release it once you see a spinning wheel. That should force the app to start communicating with the email servers.
Refreshing the Mail app also helps update mailboxes manually with accounts that use Fetch instead of Push (more on that later).
Force-Quit and Relaunch Mail
If refreshing the Mail app doesn’t help, try force-quitting and relaunching it instead. That often helps resolve odd technical issues in apps on the iPhone.
To force quit the Mail app, perform a swipe-up gesture from the bottom of the iPhone’s screen. Then, drag the Mail app card up and out of the App Switcher. Follow that by relaunching the app.
Check Notification Settings
If the issue is related to the Mail app’s notifications, open the Settings app and select Notifications > Mail. Then, make sure that the notification settings (Alerts, Sounds, and Badges) are set up the way you want.
You must also check the notifications settings for individual accounts (tap Custom Notifications) and ensure that VIP Settings aren’t overriding them.
Check Cellular Data Settings
If the Mail app fails to update your email while on cellular data, you must ensure that it isn’t barred from using the iPhone’s mobile bandwidth.
To do that, open the Settings app and select Cellular. Then, scroll down the app and turn on the switch next to Mail.
Disable Low Data Mode (Cellular and Wi-Fi)
Apple introduced Low Data Mode in iOS 13 to help conserve bandwidth on Wi-Fi and cellular networks. However, the functionality can also limit internet-related activity in apps such as Mail. So check your Wi-Fi or Cellular settings and try switching it off.
Disable Low Data Mode – Wi-Fi
Go to Settings > Wi-Fi and tap the Info icon next to the active Wi-Fi connection. Follow that by turning off the switch next to Low Data Mode.
Disable Low Data Mode – Cellular
Go to Settings > Cellular > Cellular Data Options and turn off the switch next to Low Data Mode.
Disable Low Power Mode
Likewise, try disabling Low Power Mode. That’s another functionality that adversely impacts the Mail app by curtailing various background activities on your iPhone. To do that, go to Settings > Battery and turn off the switch next to Low Power Mode.
Toggle Airplane On & Off
Toggling Airplane Mode can also fix potential connectivity issues preventing the Mail app from updating. To do that, open the iPhone’s Settings app and turn on the switch next to Airplane Mode. Then, wait for up to 10 seconds and turn it off.
If you use Wi-Fi, you can also try renewing the IP lease or soft-resetting the router.
Change Domain Name Servers
On Wi-Fi connections, changing the DNS (Domain Name Servers) to a popular service such as Google DNS can end up fixing additional connectivity-related issues.
To do that, start by heading over to Settings > Wi-Fi. Then, tap the Info icon next to the active Wi-Fi connection and select Configure DNS > Manual. Follow that by entering and saving the following DNS addresses:
8.8.8.8
8.8.4.4
On cellular connections, you can only change DNS servers by using a third-party app such as DNS Override.
Restart iPhone
Turning off your iPhone and rebooting it is another viable fix that can help resolve app-specific issues.
To do that, go to Settings > General > Shut Down and drag the Power icon to the right. After your iPhone shuts down completely, follow by holding down the Side button to reboot it.
Check Mail Settings
Email providers can use Push or Fetch to update your email. However, if given the option, you must set an account to Push since that prompts the email servers to ‘push’ your email instead of your iPhone trying to ‘fetch’ them. So it’s worth taking the time to double-check your email update settings.
To do that, start by heading over to Settings > Mail > Accounts > Fetch New Data. Then, tap on your email service provider and select Push. Or, if you have trouble with a specific mailbox only, you can set it as a pushed mailbox by tapping on it.
If Push is not supported (as is the case with Gmail), set it to Fetch. You must then select the update frequency to the fastest possible setting—Every 15 Minutes. If you want to update your email even quicker, you must manually refresh the Mail app.
Remove and Re-add Account
You can also try removing and re-adding any problematic accounts that refuse to update. That should help resolve issues with an incorrect or corrupt configuration.
To do that, go to Settings > Mail > Accounts and tap the account you want to remove.
Follow that by tapping Delete Account.
Then, select the Add Account option and go through the setup process from scratch. Make sure to choose the correct protocols (IMAP or POP) if you’re attempting to set up an email service provider using the Other setting.
Update iPhone
Bugs and glitches with the iPhone’s system software can also prevent the Mail app updating your email. Hence, it’s best to update iOS immediately by heading to Settings > General > Software Update.
Reset Network Settings
Resetting the network settings can help patch out any underlying connectivity issues with the Mail app.
To do that, open the Settings app and tap General > Transfer or Reset iPhone > Reset. Then, select Reset Network Settings.
You must follow the network setting reset by manually reconnecting to any Wi-Fi networks. Then, force-quit and re-open the Mail app and check if the issue recurs.
Reinstall Mail App
Mail is part of the portfolio of stock apps on the iPhone, but you can still reinstall it just like any other app. That should provide you with a blank slate to set up your email accounts from scratch and avoid persistent issues with the current installation.
To delete the Mail app, go to Settings > General > iPhone Storage > Mail and tap Delete App.
Follow that by redownloading the Mail app off the App Store. Then, launch it and sign in to your email account. Of course, you can always set up additional accounts by going to Settings > Mail > Accounts.
Mail App Still Not Updating Email?
If the Mail app continues to fail to update your mailboxes, you might want to contact your email service provider for help since it’s likely due to an issue beyond your control.
Alternatively, you can consider switching to an email client related to the email service provider itself—such as Gmail or Outlook—and check if that yields any positive results.
