GMass - Send email marketing campaigns INSIDE Gmail.
Send email marketing campaigns from inside your Gmail account and get the highest response rates you've ever seen. Even better, set follow-up emails to send automatically to non-responders.
ColdSMTP by GMass - Send unlimited cold emails from 1 account with no warm-up
With ColdSMTP, the new sending server exclusively for cold outreach from GMass, you can now send unlimited cold emails from 1 — yes, just 1 — Gmail account. All without warm-up and without the risk of Google shutting you down.
Cold Email Warmup by GMass - A completely free cold email warm-up system
If you're sending cold emails you likely know that warming up a domain and Gmail account is an important step to maximizing Gmail's sending limits and increasing deliverability.
Here is a completely free warm-up system that works with any Gmail account.