Most people decide whether to open from the sender, subject and the first line of preview text. Phones show far fewer characters than desktop inboxes, so the words that matter should come first. This preview approximates how much fits on each.
Green fits most phones (about 38 characters), amber fits desktop (about 70), red is cut almost everywhere. Budgets are typical, not exact.
Short enough that the key words survive on a phone. Around 30 to 50 characters is a common target, but clarity matters more than an exact count.
No. Every inbox, font and screen differs. The preview uses typical character budgets to show where text is likely to be cut, not a pixel-perfect render.
The short preview text inboxes show after the subject. If you do not set one, inboxes pull the first text of the email, which is often a navigation link or 'View in browser'.
The deliverability metrics that matter most are bounce rate, spam complaint rate, inbox placement, authentication pass rate and genuine engagement such as replies and clicks. Delivery rate alone only tells you that a server accepted the message, not whether it reached the inbox. Tracking these together shows how mailbox providers see your sending.
6 min readEmails usually go to spam because the receiving provider does not trust the sender enough: authentication is missing or misaligned, the list includes people who did not ask for the mail, recipients complain or ignore it, or the domain is new and sending too much too fast. The durable fix is to address those causes directly, not to disguise the mail.
7 min readPlan a gradual daily sending ramp for a new mailbox or domain.
Open free toolCheck a subject line and body for spammy phrasing, shouting and link overload.
Open free toolBuild SPF and DMARC DNS TXT records for your sending domain.
Open free toolRuns in the Gmail, Outlook, Yahoo, AOL and Proton tabs you are already signed in to. Filter by sender or campaign, set reading times and limits, keep a local activity log. No mailbox passwords, one-time licence.