Best iMailair Alternatives & Competitors in 2025

GMass allows you to easily schedule emails, send out mass emails and mail merge campaigns and more with Gmail! Click here to learn about more features!

Preview, Analyze & Test emails with one click.

Enterprise Email Warmup. Sender Domain Reputation Repair Tool to get out of spam and see open rates more than double in 4 to 14 days. We engage with your emails to teach mailbox providers not to send your email to the spam or the promotions folder.

Try for free paid Free Trial $149.0 / Monthly (Send to 100 of our unique seed emails per day)

Find all the email addresses related to a domain

Interseller helps find contact information, reach out to them with email automation and syncs it all into your database.

Instantly preview and test emails in dark mode

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Open Source

While the media worries about social media ad policies, Trump and Biden are sending hundreds of millions of emails that raise millions of dollars for their campaigns.

All your work notifications in one inbox

Open Source

The place to learn email marketing

Sendgomail is a trusted DIY email marketing tool with various clients when they need to send email campaigns without worrying about installing email software.

freemium $19.0 / One-off

Email and SMS testing and development platform for software engineers and QA testers

Open Source freemium

Collect email sending data across your email services

The best way to track your competitors' email marketing.

paid Free Trial $69.0 / Monthly