News flash you: there is no best time to send
Send weekly! Send three times a week! Send daily! NO NO NO
The right number of emails you send depends on who you're sending to, how engaged they are, where they are in the relationship, and whether the content actually earns its place.
The right answer for one business is flat-out wrong for another and wrong for the same business six months later
More is not more
Two sends don't reliably make two sales. The frequency-to-revenue line isn't a straight line - it's a curve, and past a point unique to you, it inverts.
Less isn't automatically safer, either
Go too quiet and your sender reputation decays. You can't measure the revenue from an email you didn't send, which is exactly why low volume gets a free pass it doesn't deserve.
In 2026, your subscribers set the volume
Gmail, Yahoo and Microsoft now decide inbox placement per subscriber based on engagement. Volume that earns positive engagement protects your deliverability.
The question was never "how often?" It's "how often is right - for this person, at this stage, with this content, triggered by the right signal?
Fewer emails, to the right people, at the moment intent shows up.