1. How many emails can I send per domain per day?
With 10 mailboxes per domain, you can send up to 500 emails/day (at 50 emails per mailbox). For aggressive sending (100 emails/mailbox), that increases to 1,000 emails/day per domain—but with increased risk.
2. What happens if I exceed the daily sending limit?
Sending more than the recommended volume may result in emails landing in spam or temporary mailbox suspension to protect deliverability.
3. What tools can I use with SkySenders mailboxes?
You can integrate mailboxes with any cold email tool that supports SMTP/IMAP — such as Instantly, Lemlist, Smartlead, Mailrush, Quickmail, and others.
4. Should I use HTML or plain-text emails?
For cold outreach, plain-text emails are preferred. Keep the email short, personalized, and free from spammy formatting or links.
5. Can I track open and reply rates?
Yes, but tracking is done through the cold email platform you connect with SkySenders mailboxes (e.g., Smartlead, Lemlist, Instantly).
