7 key points to check the quality of a database

Noé Soriano

We’ve always advised you to build your own subscriber database. Ideally using the double opt-in method, as it’s more effective at building quality databases. But sometimes that isn’t possible, it doesn’t suit you, or you simply need to launch your bulk email campaign as soon as possible. For whatever reason, you’d rather buy your database, […]

How do Gmail, Outlook.com and Yahoo Mail decide what is spam?

Mailrelay , Invited guest @ Mailrelay

Just a few days ago Return Path published a very interesting PDF for all of us who do email marketing: “Marketer’s Field Guide to Gmail, Outlook.com, and Yahoo!”. In the PDF you’ll find a very interesting analysis of the main ISPs — Gmail, Outlook.com (Hotmail) and Yahoo! Mail — their main features and the main […]

How to send email attachments safely without increasing the size of the email

Jose Argudo , CMO @ Mailrelay

We often want to add attachments to our bulk mailings or newsletters: PDFs with presentations or our service prices, videos, or even very large images. Although Mailrelay lets you attach files to your newsletters, we strongly recommend not doing so, for three reasons: 1. Anti-spam systems penalize bulk emails that include attachments. 2. You can […]