How to Change Mail Days to Sync on iPhone

Your iPhone mail can feel either lightning fast or painfully slow. Sometimes emails pop in the second they’re sent. Other times, you’re stuck refreshing your inbox like it’s 2009. The good news? You can control how often your iPhone checks for new mail. And it only takes a few taps.

TL;DR: You can change how often your iPhone checks for new email in Settings > Mail > Accounts > Fetch New Data. Choose between Push, Fetch (with a schedule), or Manual. Push delivers instantly but uses more battery. Fetch lets you pick intervals like 15 minutes or hourly. Manual only checks when you open the app.

Why Mail Sync Settings Matter

Your iPhone doesn’t magically know when a new email arrives. It uses one of three systems:

• Push – Emails arrive instantly.
• Fetch – Your phone checks at certain time intervals.
• Manual – Emails appear only when you open the Mail app.

Each option affects:

• Battery life
• Data usage
• How quickly you receive emails

If your battery drains fast, your settings might be the reason. If your email feels delayed, that’s also likely the reason.

How to Change Mail Sync Days and Frequency

Let’s walk through it step by step.

1. Open Settings.
2. Scroll down and tap Mail.
3. Tap Accounts.
4. Select Fetch New Data.

Now you’ll see all your connected email accounts. This is where the magic happens.

Step 1: Turn Push On or Off

At the top, you’ll see a toggle for Push.

• If it’s on, emails arrive instantly (if your provider supports it).
• If it’s off, your phone will use Fetch instead.

Not all email providers support Push. iCloud and some Exchange accounts do. Gmail usually uses Fetch unless configured differently.

Step 2: Choose a Fetch Schedule

Scroll down to the Fetch section.

You’ll see options like:

• Automatically
• Manually
• Hourly
• Every 30 Minutes
• Every 15 Minutes

Tap the one you prefer.

Tip: The shorter the interval, the faster you get emails. But your battery will drain quicker.

How to Change Sync Settings for Individual Accounts

Did you know you can customize settings for each email account? This is super useful.

Maybe you want work email instantly. But personal email can wait.

Here’s how:

1. Go to Settings > Mail > Accounts.
2. Select one specific account.
3. Tap Account.
4. Tap Fetch New Data (if available).
5. Choose Push, Fetch, or Manual.

Now that account has its own rules.

Push vs Fetch vs Manual: What’s the Difference?

Let’s make this crystal clear.

Feature	Push	Fetch	Manual
Speed	Instant	Scheduled	Only on open
Battery Usage	High	Medium	Low
Best For	Work email	Regular users	Saving battery
Internet Needed	Constant connection	Checks periodically	When app opens

Think of Push as a doorbell. Someone presses it. You hear it instantly.

Fetch is like checking your mailbox every hour.

Manual is like checking your mailbox only when you feel like walking outside.

What Does “Automatically” Mean?

If you choose Automatically under Fetch, your iPhone adjusts based on usage and power state.

• When plugged in, it may check more often.
• On battery, it may check less often.

This option balances performance and battery life.

It’s great if you don’t want to think about it.

How to Change How Many Days of Mail Sync

Some accounts, like Exchange, let you control how many days of emails are stored on your phone.

Here’s how to adjust it:

1. Go to Settings.
2. Tap Mail.
3. Tap Accounts.
4. Select your Exchange account.
5. Tap Mail Days to Sync.

You’ll see options like:

• No Limit
• 1 Day
• 3 Days
• 1 Week
• 2 Weeks
• 1 Month

Choose how far back you want your emails stored locally.

Important: This does not delete emails from the server. It only controls how many are stored on your phone.

Why Limit Mail Days?

More stored emails = more storage used.

If you have thousands of old emails with attachments, your iPhone storage can fill up fast.

Limiting to 1 week or 2 weeks can:

• Free up space
• Improve performance
• Speed up search

You can still access older emails. They just download when opened.

Common Problems and Easy Fixes

Emails Arriving Late

Possible causes:

• Fetch set to Hourly
• Low Power Mode enabled
• Push turned off

Fix: Change Fetch to Every 15 Minutes or enable Push.

Battery Draining Fast

Possible causes:

• Push enabled for multiple accounts
• Fetch set to 15 minutes

Fix: Switch less important accounts to Hourly or Manual.

Mail Not Updating at All

Try this:

• Turn off Push.
• Wait 10 seconds.
• Turn Push back on.
• Restart your iPhone.

Simple. But surprisingly effective.

Best Settings Based on Your Needs

If You Use Email for Work

• Enable Push for work account.
• Set personal accounts to Hourly.

You’ll stay responsive without killing your battery.

If You Want Better Battery Life

• Turn off Push.
• Set Fetch to Hourly or Manual.

You may not see emails instantly. But your battery will thank you.

If You Barely Check Email

• Set all accounts to Manual.

Your phone will only sync when you open Mail.

Does This Affect Notifications?

Yes. Absolutely.

If Push is off and Fetch is set to Hourly, you won’t get notifications immediately. They’ll appear during the next scheduled sync.

If notifications are critical, Push is the better choice.

What About Low Power Mode?

When Low Power Mode is enabled:

• Fetch may pause.
• Background activity reduces.
• Push behavior may change.

If your emails are delayed and your battery icon is yellow, that’s likely the reason.

To turn it off:

• Go to Settings > Battery.
• Toggle off Low Power Mode.

Final Thoughts

Changing mail days to sync on iPhone is simple. But it makes a huge difference.

You control:

• How fast emails arrive
• How much battery you use
• How much storage your Mail app takes

For most people, a smart setup looks like this:

• Push for important accounts.
• Hourly Fetch for everything else.
• 1 Week or 2 Weeks sync for storage balance.

Take two minutes. Adjust your settings. Test what feels right.

Your inbox should work for you. Not the other way around.