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Mobile Email Preview

Most emails are opened on a phone. Type your email and see exactly how it looks in an iPhone inbox before you send.

  • ✓Live iPhone preview
  • ✓Subject & preheader checks
  • ✓No sign-up needed

Mobile score

Looking great - ready to send.

100/100

  • Subject length is ideal for mobile.
  • Preview text adds context under your subject.
9:41

Inbox

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  • Warmy Team

    9:41

    Your inbox rate just jumped to 94%

    Here's what changed this week and the one fix that made the biggest difference.

  • LinkedIn

    You appeared in 12 searches

    See who's looking at your profile this week.

  • Calendar

    Reminder: Team sync at 11:00

    Join with Google Meet.

  • Newsletter

    5 ideas for your next campaign

    Short reads for busy marketers.

Mobile playbook

Four Rules For Emails That Get Opened On Mobile

Small screens are unforgiving. These habits make every send look sharp.

01

Lead with the hook

Keep the key words in the first 35 characters of your subject.

02

Never skip preview text

Use it as a second subject line that adds a reason to open.

03

Write for thumbs

Short paragraphs and one idea per line read best on small screens.

04

One clear action

Give readers a single, obvious next step to tap.

FAQ

Your Mobile Email
Questions, Answered

Most iPhone mail apps show around 35 to 40 characters of the subject line in the inbox. Put the most important words first so they are never cut off.
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4.9/5 on G2

Recognized By The People Who Use Us

Award-winning on G2, season after season

G2 badge for Spring 2025 Europe, labeled High Performer Mid-Market, with a pink stripe at the bottom and the G2 logo in the top right corner.A badge with the G2 logo that reads: Best Software 2025 Top 50 Marketing + Digital Advertising Products, with a design featuring yellow, orange, and red stripes at the bottom.A badge with the G2 logo and text Spring 2025 High Performer in bold letters. The bottom edge features yellow, orange, and red stripes.A badge labeled High Performer Mid-Market for Spring 2025, with the G2 logo in the top right corner and yellow, orange, and red stripes along the bottom edge.A digital badge with the G2 logo, labeled “Spring 2025 Momentum Leader.” The badge features red, yellow, and orange stripes along the bottom edge.Badge with Spring 2025 at the top, G2 logo in the corner, and High Performer Small Business in bold text, with yellow, orange, and red stripes at the bottom.A white and teal triangle with black text.A badge labeled High Performer with Spring 2025 Europe at the top and a red G2 logo in the corner, featuring a pink border at the bottom.

Loved By Thousands Of Marketers Around The World

The platform’s warmup processes make sure that our cold emails don’t bounce into spam filters. It also makes use of AI behavior tracking as we’re sending which is great for campaigns scaling. It’s also really valuable to be able to track open rates and responses.
Allan Black
Allan BlackSenior Affiliate & Strategic Partnerships Manager
ActualSales
About Warmy.io

Built By Email Deliverability Experts

A deliverability platform backed by consultants who help senders reach the inbox every day.

AI-powered

Adeline, our AI deliverability expert, built into every tool.

Human consultants

Specialists who find the root cause and guide your fix.

Trusted worldwide

Marketers, sales teams and agencies rely on Warmy.