With so many spam emails being sent every day by scammers and illegitimate marketing campaigns, spam filters on many email services have become picky. This poses a problem for companies hoping to get their newsletters to actual customers and subscribers, because their email might end up blocked by a filter. 'mail-tester' aims to help those companies by providing a free assessment of the 'spaminess' of any email.
To use mail-tester, businesses send their newsletter to the email address listed on the site. The service then responds with a score for that email out of ten, with a perfect ten as the goal. On top of the numerical score, mail-tester prevents spam email by giving advice based on a set of criteria, including grammar, link quality (e.g. are there any broken links), how authentic the business is, and other factors.
Small businesses without the clout of major corporations can use mail-tester to both prevent spam emails and boost the efficacy of their marketing campaigns.