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Create multiple subject lines with a single click

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Auto-create instantly

Let AI generate subject line options based on email content

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Tweak with prompts

Use advanced options to craft more personalized variations

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Pick a tone

Specify the tone based on your target audience and campaign goal

Say no to writer's block

Auto-generate subject lines while sending campaigns with Mailmodo

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Turn opens into conversions with this ebook

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A 3-step framework to write multiple variants

Use psychology to craft multiple subject lines for an email campaign and address you users' in a more personalized way.

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Tips from email marketers and copywriters

Learn from the expert advice and lived experience of 40+ email marketers about optimizing subject lines and email opens.

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Findings from our unique subject line experiment

Explore what we learned when we sent 30+ email marketers 3 different subject lines for the same email.

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Test drive Mailmodo AI with free subject line generator

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An open-for-all AI Subject Line Generator

OpenHigher AI creates highly contextual subject lines and preheaders in seconds - without any sign-up hassle.

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Options to add campaign details without lengthy prompts

Instruct GPT-4 with all your campaign details by selecting the right filters instead of writing a lengthy prompts

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Preview the results and share with your team

Preview how the subject lines would look in an inbox and share with your team to get feedback.

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Our customers speak

Companies trust Mailmodo to deliver a great email experience.


Start your email-led growth today
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1000+ marketers trust Mailmodo

Do better
email marketing.

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2x conversions with interactive emails

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Save time with AI-powered email creation

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Automate marketing ops with pre-built journeys

1000+ businesses grew with our tool, including

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