the inboxy blog · page 2 of 4
get your email into the inbox.
Guides on deliverability, warmup, authentication and blacklists, written for people who send cold email.
Gmail, Yahoo and Microsoft Sender Requirements Explained
What Gmail, Yahoo and Microsoft Outlook require from senders: SPF, DKIM, DMARC, alignment, one-click unsubscribe and spam rates, for cold email.
Oct 16, 2026 · 3 min read
Google Workspace Sending Limits: How Many Cold Emails Can You Send Per Day?
Google Workspace allows 2,000 emails a day per user, but safe cold email volume is 30 to 50 per inbox. The real limits and how to scale past them.
Oct 16, 2026 · 3 min read
How Long Does Email Warmup Take? A Realistic Week-by-Week Timeline
Most new inboxes need 2 to 4 weeks of warmup before cold email. A realistic week-by-week schedule, what speeds it up, and why to never switch it off.
Oct 16, 2026 · 3 min read
How Many Mailboxes and Domains Do You Need for Cold Email? (With Formula)
A simple formula for how many inboxes and domains you need for your cold email volume, with examples for 200, 500, 2,000 and 10,000 emails a day.
Oct 16, 2026 · 3 min read
Why Are My Cold Emails Going to Spam? 12 Causes and How to Fix Them
Cold emails landing in spam? The 12 most common causes, from missing DMARC and cold domains to bad lists and tracking links, and how to fix each.
Oct 16, 2026 · 4 min read
Best Tools for Monitoring Your Email Sender Reputation
Email sender reputation is essentially a score that Internet Service Providers (ISPs) and email service providers (ESPs) assign to your domain and IP address to determine whether your emails should be delivered to the inbox or marked as spam.
Sep 8, 2024 · 7 min read
10 Steps for Monitoring and Protecting Email Reputation
Email reputation, also known as sender reputation, is a score or rating assigned to your email domain and IP address by Internet Service Providers (ISPs) and email service providers (ESPs)
Sep 4, 2024 · 7 min read
How to Prevent Your Emails from Being Marked as Spam
we will explore practical strategies to prevent your emails from being marked as spam and ensure they reach your subscribers' inboxes.
Aug 29, 2024 · 7 min read
Top Tips for Improving Your Email Deliverability in 2024
High email deliverability rates ensure that your emails are not only delivered but also opened and engaged with, leading to better conversion rates and a stronger return on investment (ROI) for your email marketing efforts.
Aug 28, 2024 · 6 min read
Common Email Bounce Codes and How to Resolve Them
We'll explore some of the most common email bounce codes, what they mean, and how you can resolve the issues that cause them.
Aug 22, 2024 · 7 min read
34 articles
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