Marketing Campaigns

Email testing

Twilio email testing ensures your emails land in customer inboxes exactly as you intended—without broken links, wonky image formatting, or elements that trigger spam filters.

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Send with confidence, knowing every email is flawless.

Test for spam, validate email links, and check email appearance to ensure your messages display in customer inboxes exactly as intended.

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    Improve deliverability with spam testing

    Test your emails against the most powerful spam filters to improve deliverability.

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    Enhance user experience with link validation

    Automatically check buttons and URLs to prevent broken links and ensure they have the right metadata, reputation, and number of redirects.

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    Perfect your email design

    Conduct inbox render tests to see how your emails look across clients, browsers, and devices to catch unexpected design, layout, or formatting issues.

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    Easily scale to meet your testing needs

    Need more testing credits this month? Quickly and easily add more to your Basic or Advanced plan.

How email testing works

Catch errors, optimize design, and ensure every email looks perfect across devices and inboxes.

Email spam trigger report showing pass rate of 90% and fail rate of 10% with details on spammy words, punctuation, and triggers.

Step 1
Use spam testing tools
Leverage Twilio’s built-in spam testing tools to analyze your email content and identify elements that might trigger spam filters.

Step 2
Adjust content
Use any feedback to adjust your email content, like avoiding spammy words and excessive punctuation, to boost deliverability.

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Email testing pricing

Try it for free first. Then upgrade to a paid plan when you’re ready to ramp up.

Build custom signup forms in minutes

Access signup forms with any Marketing Campaigns plan to grow your contact list.

Try it for free

Sign up for a free trial account to create your own email signup forms. Then upgrade to a paid plan, starting at $15 per month.

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Resources

Resources to get started with email testing

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Blog

Email Testing Walkthrough and Examples: Send Flawless Emails Every Time

Discover how spam testing, link validation, and image and format rendering can help you send better emails.

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Docs

Building Email with Marketing Campaigns: Email Testing

Learn how to test and optimize your emails with Twilio Email Testing feature with our up-to-date documentation.
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Blog

Your Guide to Email A/B Testing and Optimizing Your Call to Action

Explore how to set up effective tests that help you understand your audience and continuously improve your email campaigns.

Related email features

Discover other features to streamline your email creation and optimize your marketing strategy.

  • Email templates

    Customize existing templates or build your own to give your campaigns a polished look.

  • List management

    Segment your recipients to add or remove contacts from your email list.

  • Signup forms

    Capture new signups, confirm opt-in, and add them directly to lists in Marketing Campaigns.

Start testing your emails today

Turn insights into action with Twilio SendGrid. Get started for free with 6,000 monthly emails—no credit card required.

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